AU2021204650A1 - Two-pole iec lead adaptor - Google Patents

Two-pole iec lead adaptor Download PDF

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Publication number
AU2021204650A1
AU2021204650A1 AU2021204650A AU2021204650A AU2021204650A1 AU 2021204650 A1 AU2021204650 A1 AU 2021204650A1 AU 2021204650 A AU2021204650 A AU 2021204650A AU 2021204650 A AU2021204650 A AU 2021204650A AU 2021204650 A1 AU2021204650 A1 AU 2021204650A1
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AU
Australia
Prior art keywords
iec
lead
adaptor
pole
testing device
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Pending
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AU2021204650A
Inventor
Nigel Manifold
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Individual
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Individual
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Priority to AU2021204650A priority Critical patent/AU2021204650A1/en
Publication of AU2021204650A1 publication Critical patent/AU2021204650A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/54—Intermediate parts, e.g. adapters, splitters or elbows
    • H01R24/542—Adapters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
    • H01R24/22—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable with additional earth or shield contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • H01R24/30—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable with additional earth or shield contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes

Abstract

P6370AU00 Abstract An IEC adaptor (1) for interfacing a two-pole IEC lead with an IEC lead testing device which is normally adapted to receive a three-pole IEC lead. The adaptor (1) includes a pair of connector plugs/sockets (2, 3), and may optionally include an indicator (100) in the form of an audio, visual and/or vibration device to indicate a warning to a user. Fig. 11 24 LIEU 1 3 Figure 3 18 3 6a 6b Figure 4

Description

LIEU
1
3
Figure 3
18
3
6a 6b
Figure 4
P6370AU00
Two-Pole IEC Lead Adaptor
Field of the Invention
[001] The present invention relates to an IEC adaptor adapted to interface and connect an unearthed two-pole IEC lead with an IEC lead testing device.
Background
[002] Any reference herein to known prior art does not, unless the contrary indication appears, constitute an admission that such prior art is commonly known by those skilled in the art to which the invention relates, at the priority date of this application.
[003] Known International Electrotechnical Commission (IEC) lead testing devices currently used by test and tag technicians, as well as electricians, are available to test the earth continuity resistance, RPE, the insulation resistance, Riso, and the live and neutral polarity statuses of the three-pole IEC lead. Further, the leakage current, or Protective Conductor Current, of the three-pole IEC lead may also be tested. The three-pole IEC lead could be of IEC 60320 C13 or IEC 60320 C15 type.
[004] A complication with the currently available IEC lead testing devices is that there are currently no IEC lead testing devices used by technicians or electricians that can connect to a two-pole IEC lead, such as IEC 60320 C17. As a result, technicians and electricians have attempted to avoid this complication by visual inspection of the two-pole IEC lead, and by testing the two-pole IEC lead with an electrical appliance or with a multimeter/voltmeter, as there are currently no adaptors available to convert the two-pole IEC male connector outlet, i.e. IEC 60320 C17, to a three-pole IEC male connector outlet, i.e. IEC 60320 C13/C15. However, these tests are flawed as they do not sufficiently measure the polarity status, leakage current and insulation resistance of the two-pole IEC lead, which are required tests, under the Work Health Safety (WHS) standard AS/NZ3760, to determine whether the IEC lead is still safely useable and would pose any sort of danger to users.
Summary of the invention
[005] The present invention seeks to overcome at least some of the disadvantages of these aforementioned problems.
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[006] In a broad form, the present invention provides an IEC adaptor for interfacing a two-pole IEC lead with an IEC lead testing device which is normally adapted to receive a three-pole IEC lead.
[007] Preferably, the IEC adaptor includes a first end comprising a three-pole connector outlet, including: a first receptacle, being the live connection; a second receptacle, being the neutral connection; and a third receptacle, being the earth connection.
[008] Preferably, the three-pole male connector outlet can be any one of: IEC 60320 C13 type; IEC 60320 C15 type; or other 3D shapes that are compatible with an IEC 60320 C14 female connector inlet.
[009] Preferably, the IEC adaptor includes a second end comprising a two-pole connector inlet, including: a first pin, being the live connection; and a second pin, being the neutral connection.
[0010] Preferably, the two-pole connector inlet can be any one of: IEC 60320 C18 type; or other 3D shapes that are compatible with an IEC 60320 C17 connector outlet.
[0011] In an example embodiment, the IEC adaptor further includes a cord or cable that connect the first end to the second end.
[0012] Preferably, the cord or cable has a length in the range of 0.5 m to 5 m.
[0013] Preferably, the cord includes a cladding that is made of an electrically insulative material, preferably plastic.
[0014] Preferably, the adaptor further includes: a first housing that receives the first end; and a second housing that receives the second end.
[0015] Preferably, first and second housings are made of an electrically insulative material, preferably plastic.
[0016] In a second example embodiment, the adaptor further includes a housing that receives the first end and the second end.
[0017] Preferably, the housing is made of an electrically insulative material, preferably plastic.
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[0018] Preferably, in both example embodiments, the first end of the adaptor electrically connects with an IEC 60320 C14 connector inlet of the IEC lead testing device.
[0019] Preferably, in both example embodiments, the second end of the adaptor electrically connects with an IEC 60320 C17 connector outlet of the two-pole IEC lead.
[0020] Preferably, when the mains inlet of the two-pole IEC lead is connected to the mains outlet of the IEC lead testing device, the IEC lead testing device tests the insulative resistance and polarity status of the two-pole IEC lead.
[0021] Preferably, when the second end of the adaptor electrically is not connected with the IEC 60320 C17 connector outlet of the two-pole IEC lead, and when the IEC 60320 C14 connector inlet of the IEC lead testing device is connected to the outlet of a three-pole IEC lead, in which the inlet of the three-pole IEC lead is connected to a household or industrial mains outlet, and the IEC 60320 C17 connector outlet of the two pole IEC lead is connected to the inlet of a Class I electrical appliance, the IEC lead testing device tests the leakage current of the two-pole IEC lead.
[0022] Preferably, when the second end of the adaptor electrically is not connected with the IEC 60320 C17 connector outlet of the two-pole IEC lead, and when the IEC 60320 C14 connector inlet of the IEC lead testing device is connected to the outlet of a three-pole IEC lead, in which the inlet of the three-pole IEC lead is connected to a household or industrial mains outlet, the IEC 60320 C17 connector outlet of the two-pole IEC lead is connected to the inlet of a ClassII electrical appliance, and the IEC lead testing device is connected to a probe plug that comprises a black probe tip that electrically contacts the conductive portions of the Class II electrical appliance, the IEC lead testing device tests the leakage current of the two-pole IEC lead.
[0023] Preferably, in both example embodiments, the adaptor further includes an indicator.
[0024] Preferably, the indicator comprises any one or combination of: visual indicator, including a light emitting diode; audio indicator, including a buzzer; and vibration indicator, including a motor or piezoelectric component.
[0025] Preferably, the indicator is connected to the live and neutral connections of the IEC adaptor.
[0026] Preferably, the indicator comprises circuitry that restricts current flowing through the indicator to be at a minimum.
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[0027] Preferably, in both example embodiments, the adaptor further includes a monitoring and switching device.
[0028] Preferably, the monitoring and switching device is connected to the live and neutral connections of the IEC adaptor.
[0029] Preferably, the monitoring and switching device measures the potential difference of the live and neutral ports of the IEC adaptor.
[0030] Preferably, in the event that the potential difference is outside a predetermined threshold range by the monitoring and switching device, the monitoring and switching device will open circuit the live connection to prevent current from reaching the first end.
[0031] Preferably, when the inlet of the two-pole IEC lead is connected to a household or industrial mains outlet, the IEC 60320 C17 connector outlet of the two-pole IEC lead can be connected to the inlet of a Class I electrical appliance, via the adaptor, to provide electrical power to the Class I electrical appliance, that can be disconnected passively and/or actively if the monitoring and switching device of the adaptor detects a fault in the live or neutral connection of the adaptor.
Brief Description of the Drawings
[0032] Embodiments of the present invention will be described in further detail with reference to the drawings from which further features, embodiments and advantages may be taken, and in which:
[0033] Figure 1 is a perspective view of an embodiment of the present invention, showing an adaptor for interfacing a two-pole IEC lead with a IEC lead testing device;
[0034] Figure 2 shows a front view of the adaptor of Figure 1
[0035] Figure 3 shows a further perspective view of the adaptor of Figure 1;
[0036] Figure 4 shows a rear view of the adaptor of Figure 1;
[0037] Figure 5 shows a front view of the top portion of a portable appliance testing device, which can be used as the IEC lead testing device;
[0038] Figure 6 shows a top view of the portable appliance testing device of Figure ;
[0039] Figure 7 shows an example embodiment of a typical connection of the portable appliance testing device, as shown in Figure 5, with a three-pole IEC lead, to test the performance of the three-pole IEC lead;
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[0040] Figure 8 shows a section view of section A of the example embodiment of Figure 7;
[0041] Figure 9 shows an example embodiment of a possible connection of the portable appliance testing device, as shown in Figure 5, with a two-pole IEC lead, via the adaptor of Figure 1, to test the performance of the two-pole IEC lead;
[0042] Figure 10 shows a section view of section B of the example embodiment of Figure 9;
[0043] Figure 11 is a perspective view of a further embodiment of the present invention, showing an adaptor for interfacing a two-pole IEC lead with an IEC lead testing device;
[0044] Figure 12 shows a further perspective view of the adaptor of Figure 11;
[0045] Figure 13 shows an example embodiment of a further possible connection of the portable appliance testing device, as shown in Figure 5, with a two-pole IEC lead, via the adaptor of Figure 11, to test the performance of the two-pole IEC lead;
[0046] Figure 14 shows a section view of section C of the example embodiment of Figure 13;
[0047] Figure 15 shows a section view of section D of the example embodiment of Figure 13;
[0048] Figure 16 is a perspective view of a further embodiment of the present invention, showing an adaptor for interfacing a two-pole IEC lead with an IEC lead testing device;
[0049] Figure 17 shows a front view of the adaptor of Figure 16;
[0050] Figure 18 is a perspective view of a further embodiment of the present invention, showing an adaptor for interfacing a two-pole IEC lead with an IEC lead testing device;
[0051] Figure 19 shows a front view of the adaptor of Figure 18;
[0052] Figure 20 shows a perspective view of a further embodiment of the present invention, showing an adaptor for interfacing a two-pole IEC lead with an IEC lead testing device;
[0053] Figure 21 shows a perspective view of a further embodiment of the present invention, showing an adaptor for interfacing a two-pole IEC lead with an IEC lead testing device;
[0054] Figure 22 is a circuit diagram, showing the electrical connections of the adaptors of Figures 20 and 21; and
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[0055] Figure 23 is a circuit diagram, showing a further embodiment of the present invention of an adaptor with a further unearth circuit breaker feature.
Detailed Description of Preferred Embodiments
[0056] Throughout the drawings, like numerals will be used to identify like features, except where expressly otherwise indicated.
[0057] In Figures 1 and 3, a first embodiment of an IEC adaptor (1) is shown to include a first end (2) and a second end (3), with a housing (4) that is preferably made of electrically insulative material, such as plastic, to prevent any electrical shocks from occurring to users that handle the adaptor (1). As shown in Figure 2, the first end (2) of the adaptor (1) comprises a three-pole male connector outlet (7), or an IEC 60320 C13, in which the three-pole male connector outlet (7) has a first receptacle (5a), a second receptacle (5b) and a third receptacle (5c) that respectively correspond to the live, neutral and earth connections. On the other hand, as shown in Figure 4, the second end (3) of the adaptor (1) comprises a two-pole female connector inlet (8), or an IEC 60320 C18, in which the two-pole female connector outlet (8) has a first pin (6a) and a second pin (6b) that respectively correspond to the live and neutral connections.
[0058] In Figures 5 and 6, a portable appliance testing device (10) is shown, comprising a mains outlet (11), an IEC inlet (12), a display (13), an input region (14), an on/off switch (17) and a housing (15). In particular, the IEC inlet (12) of the portable appliance testing device (10) is a three-pole female connector inlet (18), preferably being an IEC 60320 C14, having a first pin (16a), a second pin (16b) and a third pin (16c) that respectively correspond to the live, neutral and earth connections. A skilled person may understand, from Figures 5 and 6, that the portable appliance testing device (10) may be a commercially available device such as the Seaward Primetest 300 portable appliance.
[0059] Figure 7 shows the typical operation of the portable appliance testing device (10), where the portable appliance testing device (10) is connected to a three-pole IEC lead (20) to test the performance of the three-pole IEC lead (20). The three-pole IEC lead (20) includes a mains inlet (21) and an IEC outlet (22).
[0060] It should be apparent to a person skilled in the art that the three-pole IEC lead (20) could be an IEC 60320 C13 power cable or an IEC 60320 C15 power cable, or a combination of power cables connected together to produce the same, or similar, type of
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inlet and outlet connectors as the IEC 60320 C13 power cable or the IEC 60320 C15 power cable.
[0061] As shown in Figure 7, the mains inlet (21) of the three-pole IEC lead (20) is connected to the mains outlet (11) of the portable appliance testing device (10). Likewise, the IEC outlet (22) of the three-pole IEC lead (20) is connected to the IEC inlet (12) of the portable appliance testing device (10), creating a loop or circuit with the portable appliance testing device (10) and three-pole IEC lead (20).
[0062] A close-up view of the connection region between the IEC outlet (22) of the three-pole IEC lead (20) and the IEC inlet (12) of the portable appliance testing device (10), depicted as section A, is shown in Figure 8. The IEC outlet (22) of the three-pole IEC lead (20) is a three-pole male connector outlet (27), which can be either IEC 60320 C13 or IEC 60320 C15 type. The three-pole male connector outlet (27) has a first receptacle (26a), a second receptacle (26b) and a third receptacle (26c) that respectively correspond to the live, neutral and earth connections. Further, the first, second and third receptacles (26a, 26b, 26c) of the three-pole male connector outlet (27) are adapted to receive and electrically connect with the first, second and third pins (16a, 16b, 16c) of the three-pole female connector inlet (18).
[0063] Returning back to Figure 7, with the three-pole IEC lead (20) connected to the portable appliance testing device (10), a loop is formed such that the three-pole IEC lead (20) can now be tested. A user, which could be a test and tag technician or an electrician, would then switch on the portable appliance testing device (10), via the on/off switch, and input commands using the input region (14) of the portable appliance testing device (10) to begin testing of the three-pole IEC lead (20).
[0064] Alternatively, the user may also first switch on the portable appliance testing device (10), via the on/off switch, before connecting the three-pole IEC lead (20) to the portable appliance testing device (10), and then input commands using the input region (14) of the portable appliance testing device (10), after the three-pole IEC lead (20) is connected to the portable appliance testing device (10).
[0065] The portable appliance testing device (10) will test the IEC lead (20) in three stages, an earth continuity resistance, RPE, test, an insulation resistance, Riso, test, and a lead polarity test.
[0066] The earth continuity resistance of the lead (20) is measured by applying a ±200 mA direct current (DC) from the earth pin of the mains outlet (11). The display (13) of the portable appliance testing device (10) then indicates to the user of the highest earth
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continuity resistance measured, and whether the lead (20) has passed or failed the earth continuity resistance test. In an example preferred state, the three-pole IEC lead (20) is deemed to have passed the earth continuity resistance test if the RPE is measured to be in the range of 0 to 0.10 ), preferably at 0.06 0.
[0067] The insulation resistance of the lead (20) is measured by applying a 500 V DC between the earth pin and both the live and neutral pins of mains outlet (11), where the measurement is made for over a period of approximately 2 seconds. The display (13) of the portable appliance testing device (10) then indicates to the user of the insulation resistance measured, and whether the lead (20) has passed or failed the insulation resistance test. In an example preferred state, the three-pole IEC lead (20) is deemed to have passed the insulation resistance test if the Riso is measured to be greater than 1.0 M, preferably above 200 MO.
[0068] The lead polarity test checks the short and open circuit conditions of the live and neutral connections of the lead (20). Once the polarity of the lead (20) is measured, the display (13) of the portable appliance testing device (10) then indicates to the user of the current polarity state of the lead (20), which could be live open, neutral open, live/neutral short, live/neutral reversed. The lead polarity test passes when that the live and neutral conductor lines of the lead (20) do not cross or connect in any way.
[0069] In addition, it is also possible for the portable appliance testing device (10) to conduct a leakage current test by first disconnecting the IEC inlet (12) and the IEC outlet (22). It is then reconnected based on whether an equipment under test, to be connected to the IEC outlet (22), is a Class I or Class II appliance.
[0070] ForClass I appliances, the IEC outlet (22) is connected toa ClassII appliance while the IEC inlet (12) is connected to an IEC 60320 C13/C15 power cable that is connected to a mains supply, where 230 V, 50 Hz alternating current (AC) is supplied. The display (13) of the portable appliance testing device (10) then indicates to the user of the current flowing in the earth conductor of the Class I appliance and determines the difference in current flowing in the live and neutral conductors. In an example preferred state, the three-pole IEC lead (20) is deemed to have passed the leakage current test if the leakage current is measured to be in the range of 0 to 5 mA, preferably below 0.15 mA.
[0071] For Class II appliances, the IEC outlet (22) is connected to a Class II appliance while the IEC inlet (12) is connected to an IEC 60320 C13/C15 power cable that is connected to a mains supply, where 230 V, 50 Hz alternating current (AC) is
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supplied. In addition, a probe plug is connected to the portable appliance testing device (10), with the probe plug having a black test probe that electrically contacts with several conductive parts of the Class II appliance. The display (13) of the portable appliance testing device (10) then indicates to the user of any current that is flowing from accessible conductive parts of the appliance to earth via the IEC 61010-1 body model. In an example preferred state, the three-pole IEC lead (20) is deemed to have passed the leakage current test if the leakage current is measured to be in the range of 0 to 5 mA, preferably below 0.15 mA.
[0072] These four electrical tests, coupled with the visual test of identifying faults and defects visually on the lead (20), allow the user to competently test and determine whether the three-pole IEC lead (20) can pass all the test and satisfy the WHS standard AS/NZ3760.
[0073] Figure 9 shows the adjusted operation of the portable appliance testing device (10), where the portable appliance testing device (10) is connected to a two-pole IEC lead (30), via the IEC adaptor (1), to test the performance of the two-pole IEC lead (30). The two-pole IEC lead (30) includes a mains inlet (31) and an IEC outlet (32).
[0074] It should be apparent to a person skilled in the art that the two-pole IEC lead (30) can be an IEC 60320 C17 power cable, or a combination of power cables connected together to produce the same, or similar, type of inlet and outlet connectors as the IEC 60320 C17 power cable.
[0075] As shown in Figure 9, the mains inlet (31) of the two-pole IEC lead (30) is connected to the mains outlet (11) of the portable appliance testing device (10). In contrast, the IEC outlet (32) of the two-pole IEC lead (30) is connected to the second end (3) of the adaptor (1), while the first end (2) of the IEC adaptor (1) is connected to IEC inlet (12) of the portable appliance testing device (10). Thus, a loop or circuit is created with the portable appliance testing device (10), the two-pole IEC lead (30) and the adaptor (1).
[0076] A close-up view of the connection region between the IEC outlet (32) of the two-pole IEC lead (30), the first and second ends (2, 3) of the IEC adaptor (1), and the IEC inlet (12) of the portable appliance testing device (10), depicted as section B, is shown in Figure 10. The IEC outlet (32) of the two-pole IEC lead (30) is a two-pole male connector outlet (37), or IEC 60320 C17 type. The two-pole male connector outlet (37) has a first receptacle (36a) and a second receptacle (36b) that respectively correspond to the live and neutral connections. Further, the first and second receptacles (36a, 36b)
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of the two-pole male connector outlet (37) are adapted to receive and electrically connect with the first and second pins (6a, 6b) of the two-pole female connector inlet (8). On the first end (2) of the IEC adaptor (1), the first, second and third receptacles (5a, 5b, 5c) of the three-pole male connector outlet (7) is adapted to receive and electrically connect with the first, second and third pins (16a, 16b, 16c) of the three-pole female connector inlet (18).
[0077] Returning back to Figure 9, with the two-pole IEC lead (30) connected to the portable appliance testing device (10), via the IEC adaptor (1), a loop is formed such that the two-pole IEC lead (30) can now be tested. A user, which could be a test and tag technician or an electrician, would then switch on the portable appliance testing device (10), via the on/off switch, and input commands using the input region (14) of the portable appliance testing device (10) to begin testing of the two-pole IEC lead (30).
[0078] Alternatively, the user may also first switch on the portable appliance testing device (10), via the on/off switch, before connecting the two-pole IEC lead (30) to the portable appliance testing device (10), and then input commands using the input region (14) of the portable appliance testing device (10), after the two-pole IEC lead (30) is connected to the portable appliance testing device (10).
[0079] The portable appliance testing device (10) will test the IEC lead (30) in three stages, an earth continuity resistance, RPE, test, an insulation resistance, Riso, test, and a lead polarity test. However, considering that the lead (30) does not have an earth/common conductive line, the earth continuity resistance test is not required for the two-pole IEC lead (30).
[0080] The insulation resistance of the lead (30) is measured by applying a 500 V DC between the earth pin and both the live and neutral pins of mains outlet (11), where the measurement is made for over a period of approximately 2 seconds. The display (13) of the portable appliance testing device (10) then indicates to the user of the insulation resistance measured, and whether the lead (30) has passed or failed the insulation resistance test. In an example preferred state, the two-pole IEC lead (30) is deemed to have passed the insulation resistance test if the Riso is measured to be greater than 1.0 M, preferably above 200 MO.
[0081] The lead polarity test checks the short and open circuit conditions of the live and neutral connections of the lead (30). Once the polarity of the lead (30) is measured, the display (13) of the portable appliance testing device (10) then indicates to the user of the current polarity state of the lead (30), which could be live open, neutral open,
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live/neutral short, live/neutral reversed. The lead polarity test passes when that the live and neutral conductor lines of the two-pole IEC lead (30) do not cross or connect in any way.
[0082] In addition, it is also possible for the portable appliance testing device (10) to conduct a leakage current test by first disconnecting the IEC inlet (12) and the first end (2) of the IEC adaptor (1). It is then reconnected based on whether an equipment under test, to be connected to the first end (2) of the adaptor (1), is a Class I or Class II appliance.
[0083] For Class I appliances, the first end (2) is connected to a ClassII appliance while the IEC inlet (12) is connected to an IEC 60320 C13/C15 power cable that is connected to a mains supply, where 230 V, 50 Hz alternating current (AC) is supplied. The display (13) of the portable appliance testing device (10) then indicates to the user of the current flowing in the earth conductor of the Class I appliance and determines the difference in current flowing in the live and neutral conductors. In an example preferred state, the two-pole IEC lead (30) is deemed to have passed the leakage current test if the leakage current is measured to be in the range of 0 to 5 mA, preferably below 0.15 mA.
[0084] For Class II appliances, the first end (2) is connected to a ClassII appliance while the IEC inlet (12) is connected to an IEC 60320 C13/C15 power cable that is connected to a mains supply, where 230 V, 50 Hz alternating current (AC) is supplied. In addition, a probe plug is connected to the portable appliance testing device (10), with the probe plug having a black test probe that electrically contacts with several conductive parts of the Class II appliance. The display (13) of the portable appliance testing device (10) then indicates to the user of any current that is flowing from accessible conductive parts of the appliance to earth via the IEC 61010-1 body model. In an example preferred state, the two-pole IEC lead (30) is deemed to have passed the leakage current test if the leakage current is measured to be in the range of 0 to 5 mA, preferably below 0.15 mA.
[0085] For the leakage current test, a skilled person would understand that the test can also be performed with the detachment of the IEC adaptor (1), and to instead connect the IEC outlet (32) to an appliance with a compatible two-pole female connector inlet, or IEC 60320 C18 type.
[0086] Thus, the electrical tests, coupled with the visual test of identifying faults and defects visually on the lead (30), allow the user to competently test and determine whether the two-pole IEC lead (30) can pass the necessary tests to satisfy the WHS standard AS/NZ3760.
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[0087] In Figures 11 and 12, a second embodiment of an IEC adaptor (1*) is shown to include a first end (2*) and a second end (3*), each being housed separately by a first housing (4a) and a second housing (4b). The first and second ends (2*, 3*) are linked by a cord (9) that can be of any length but is preferably chosen to be in the range of 0.5 m to 5 m. The first and second housings (4a, 4b) and the cladding of the extension of the cord (9) are preferably made of electrically insulative material, such as plastic, to prevent any electrical shocks from occurring to users that handle the adaptor (1*). Similar to the first embodiment, the first end (2*) of the adaptor (1*) comprises a three-pole male connector outlet (7*), or an IEC 60320 C13, in which the three-pole male connector outlet (7*) has a first receptacle (5a*), a second receptacle (5b*) and a third receptacle (5c*) that respectively correspond to the live, neutral and earth connections. Also similar to the first embodiment, the second end (3*) of the adaptor (1*) comprises a two-pole female connector inlet (8*), or an IEC 60320 C18, in which the two-pole female connector outlet (8*) has a first pin (6a*) and a second pin (6b*) that respectively correspond to the live and neutral connections.
[0088] Similar to the first embodiment of the adaptor (1) being used in Figure 9, Figure 13 shows the adjusted operation of the portable appliance testing device (10), where the portable appliance testing device (10) is connected to a two-pole IEC lead (30), via the IEC adaptor (1*), to test the performance of the two-pole IEC lead (30). The two pole IEC lead (30) includes a mains inlet (31) and an IEC outlet (32).
[0089] It should be apparent to a person skilled in the art that the two-pole IEC lead (30) can be an IEC 60320 C17 power cable, or a combination of power cables connected together to produce the same, or similar, type of inlet and outlet connectors as the IEC 60320 C17 power cable.
[0090] As shown in Figure 13, the mains inlet (31) of the two-pole IEC lead (30) is connected to the mains outlet (11) of the portable appliance testing device (10). In contrast, the IEC outlet (32) of the two-pole IEC lead (30) is connected to the second end (3*) of the adaptor (1*), while the first end (2*) of the IEC adaptor (1*) is connected to IEC inlet (12) of the portable appliance testing device (10). Thus, a loop or circuit is created with the portable appliance testing device (10), the two-pole IEC lead (30) and the adaptor (1*).
[0091] A close-up view of the connection region between the IEC inlet (12) of the portable appliance testing device (10) and the first end (2*) of the IEC adaptor (1*), depicted as section C, is shown in Figure 14. In particular, the first, second and third
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receptacles (5a*, 5b*, 5c*) of the three-pole male connector outlet (7*) is adapted to receive and electrically connect with the first, second and third pins (16a*, 16b*, 16c*) of the three-pole female connector inlet (18).
[0092] On the other hand, a close-up view of the connection region between the IEC outlet (32) of the two-pole IEC lead (30) and second end (3*) of the IEC adaptor (1*), depicted as section D, is shown in Figure 15, wherein the IEC outlet (32) of the two-pole IEC lead (30) is a two-pole male connector outlet (37), or IEC 60320 C17 type. Specifically, the two-pole male connector outlet (37) has a first receptacle (36a) and a second receptacle (36b) that respectively correspond to the live and neutral connections. Further, the first and second receptacles (36a, 36b) of the two-pole male connector outlet (37) are adapted to receive and electrically connect with the first and second pins (6a*, 6b*) of the two-pole female connector inlet (8*).
[0093] Returning back to Figure 13, with the two-pole IEC lead (30) connected to the portable appliance testing device (10), via the IEC adaptor (1*), a loop is formed such that the two-pole IEC lead (30) can now be tested. A user, which could be a test and tag technician or an electrician, would then switch on the portable appliance testing device (10), via the on/off switch, and input commands using the input region (14) of the portable appliance testing device (10) to begin testing of the two-pole IEC lead (30).
[0094] Alternatively, the user may also first switch on the portable appliance testing device (10), via the on/off switch, before connecting the two-pole IEC lead (30) to the portable appliance testing device (10), and then input commands using the input region (14) of the portable appliance testing device (10), after the two-pole IEC lead (30) is connected to the portable appliance testing device (10).
[0095] As the second embodiment of the IEC adaptor (1*) functions substantially same to the first embodiment of the IEC adaptor (1), a skilled person would understand that the portable appliance testing device (10) would apply the same electrical tests to the two-pole IEC lead (30) as described above. Coupled with the visual test of identifying faults and defects visually on the lead (30), the user can competently test and determine whether the two-pole IEC lead (30) passes all the necessary tests to satisfy the WHS standard AS/NZ3760.
[0096] As the three-pole male connector outlet (7, 7*) of the adaptors (1, 1*) have IEC 60320 C13 type, it should be apparent to a skilled person that the three-pole male connector outlet can also be of IEC 60320 C15 type, as shown in Figures 16 and 17. In addition, further modifications can also be made to first end of the adaptor to omit the
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third receptable, since the earth connection is not present in the adaptor. In Figures 18 and 19, a custom first end (52) is shown, where the inlet (57) of the adaptor (51) has first and second receptacles (55a, 55b) that respectively correspond to the live and neutral connections. The inlet (57) can be connected to the IEC inlet (12) of the appliance testing device (10) and still function substantially same to the first and second embodiments of the adaptor (1, 1*).
[0097] A skilled person would also know that the user may wish to disconnect or snap the earth pin (16c) of the three-pole female connector inlet (18) to potentially make a two-pole female connector inlet. However, this would be illegal and not comply with the WHS standard AS/NZ3760, as it could place the user in a dangerous situation during the testing of the two-pole IEC lead.
[0098] Also, a skilled may know that the adaptor could have a cord of various lengths, as well various core sizes. Further adjustments, such as the colour, moulding of the male three-pole plug, materials and gauge of electrical cable could also be made when making the adaptor.
[0099] In Figures 20, a further fifth embodiment of an IEC adaptor (1') is shown to include a first end (2') and a second end (3'), with a housing (4') that is preferably made of electrically insulative material, such as plastic, to prevent any electrical shocks from occurring to users that handle the adaptor (1'). The IEC adaptor (1') further includes an indicator (100), which may comprise at least one visual indicator, such as a light emitting diode, and/or at least one audio indicator, such as a buzzer. The indicator provides an indication to the user to avoid touching the adaptor (1'), since the adaptor (1') currently has a current flowing through it and would shock the user if the adaptor (1') is incorrectly handled.
[00100] As shown in Figure 22, the live connection has the first pin (6a') of the second end (3') connected to the first receptacle (5a') of the first end (2'), while the neutral connection has the second pin (6b') of the second end (3') connected to the second receptacle (5b') of the first end (2'). The indicator (100) is connected to the live and neutral connections, in which the indicator (100) provides a resistance that allows current to flow through the indicator (100), without shorting the live and neutral connections. Preferably, the indicator (100) includes circuitry that restricts the current flowing through the indicator (100) to be at a minimum, so that the majority of the current flows towards the first end (2') of the IEC adaptor (1'), avoiding any issues with the testing stages of the portable appliance testing device (10).
P6370AU00
[00101] Similarly, in Figures 21, a further sixth embodiment of an IEC adaptor (1*') is shown to include a first end (2*') and a second end (3*'), each being housed separately by a first housing (4a') and a second housing (4b'). The first and second ends (2*', 3*') are linked by a cord (9') that can be of any length but is preferably chosen to be in the range of 0.5 m to 5 m. The first and second housings (4a', 4b') and the cladding of the extension of the cord (9') are preferably made of electrically insulative material, such as plastic, to prevent any electrical shocks from occurring to users that handle the adaptor (1*').
[00102] The IEC adaptor (1*') further includes an indicator (100*), which may comprise at least one visual indicator, such as a light emitting diode, and/or at least one audio indicator, such as a buzzer. The indicator provides an indication to the user to avoid touching the adaptor (1*'), since the adaptor (1*') currently has a current flowing through it and would shock the user if the adaptor (1*') is incorrectly handled.
[00103] As shown in Figure 22, the live connection has the first pin (6a*') of the second end (3*') connected to the first receptacle (5a*') of the first end (2*'), while the neutral connection has the second pin (6b*') of the second end (3*') connected to the second receptacle (5b*') of the first end (2*'). The indicator (100*) is connected to the live and neutral connections, in which the indicator (100*) provides a resistance that allows current to flow through the indicator (100*), without shorting the live and neutral connections. Preferably, the indicator (100*) includes circuitry that restricts the current flowing through the indicator (100*) to be at a minimum, so that the majority of the current flows towards the first end (2*') of the IEC adaptor (1*'), avoiding any issues with the testing stages of the portable appliance testing device (10). As is apparent to a skilled person, the indicator (100*) can also be used to indicate a fault in the cord (9') or first end (2*') of the adaptor (1*').
[00104] In Figure 23, the fifth and sixth embodiment of the IEC adaptor (1', 1*') may also comprise a monitoring and switching device (200, 200*) that detects whether the potential difference of the live and neutral ports are within a certain threshold. In the event that the potential difference of the live and neutral ports is outside a certain threshold, the switching device open circuits the live connection to prevent current from reaching the first end (2', 2*') of the adaptor (1', 1*'). This feature allows the adaptor (1', 1*') to connect the two-pole IEC lead (30) safely with a Class I electrical appliance.
[00105] As is apparent to a skilled person, the IEC adaptor may also comprise warning labels on the housing to indicate to the user to avoid touching the adaptor when
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the adaptor is connected to the two-pole IEC lead (30), and to either the portable appliance testing device (10) or the Class I appliance, as the adaptor would have a current flowing through it and would shock the user if the adaptor is incorrectly handled.
[00106] In relation to the portable appliance testing device, it should be evident to a skilled person that the mains outlet dimension could also be modified to receive other types of electrical plugs, from type A to type 0 as designated by the US Department of Commerce International Trade Administration (ITA), to also test the electrical leads that are used in countries other than Australia and New Zealand.
[00107] Where ever it is used, the word "comprising" is to be understood in its "open" sense, that is, in the sense of "including", and thus not limited to its "closed" sense, that is the sense of "consisting only of'. A corresponding meaning is to be attributed to the corresponding words "comprise", "comprised" and "comprises" where they appear.
[00108] While particular embodiments of this invention have been described, it will be evident to those skilled in the art that the present invention may be embodied in other specific forms without departing from the essential characteristics thereof. The present embodiments and examples are therefore to be considered in all respects as illustrative and not restrictive, and all modifications which would be obvious to those skilled in the art are therefore intended to be embraced therein.
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List of Reference Numerals
1 First Embodiment of Adaptor 16c Third Pin
1* Second Embodiment of Adaptor 17 On/Off Switch
2 First End of Adaptor (First 18 (lEC 60320 C14) Three-Pole Embodiment) Female Connector Inlet (First Embodiment)
2* First End of Adaptor (Second 20 Three-Pole IEC Lead Embodiment)
3 Second End of Adaptor (First 21 Mains Inlet Embodiment)
3* Second End of Adaptor (Second 22 IEC Outlet Embodiment)
4 Housing 26a First Receptacle
4a First Housing 26b Second Receptacle
4b Second Housing 26c Second Receptacle
a First Receptacle (First 27 (IEC 60320 C13/C15) Three-Pole Embodiment) Male Connector Outlet
a* First Receptacle (Second 30 Two-Pole IEC Lead Embodiment)
b Second Receptacle (First 31 Mains Inlet Embodiment)
b* Second Receptacle (Second 32 IEC Outlet Embodiment)
c Third Receptacle (First 36a First Receptacle Embodiment)
c* Third Receptacle (Second 36b Second Receptacle Embodiment)
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6a First Pin (First Embodiment) 37 (lEC 60320 C17) Two-Pole Male Connector Outlet
6a* First Pin (Second Embodiment) 41 Third Embodiment of Adaptor
6b Second Pin (First Embodiment) 42 First End of Adaptor (Third Embodiment)
6b* Second Pin (Second Embodiment) 43 Second End of Adaptor (Third Embodiment)
7 (lEC 60320 C13) Three-Pole Male 44 Housing Connector Outlet (First Embodiment)
7* (lEC 60320 C13) Three-Pole Male 45a First Receptacle (Third Connector Outlet (Second Embodiment) Embodiment)
8 (lEC 60320 C18) Two-Pole Female 45b Second Receptacle (Third Connector Inlet (First Embodiment) Embodiment)
8* (IEC 60320 C18) Two-Pole Female 45c Third Receptacle (Third Connector Inlet (Second Embodiment) Embodiment)
9 Cord/Cable 47 (IEC 60320 C15) Three-Pole Male Connector Outlet (Third Embodiment)
Portable Appliance Testing Device 51 Fourth Embodiment of Adaptor (IEC Lead Testing Device)
11 Mains Outlet 52 First End of Adaptor (Fourth Embodiment)
12 IEC Inlet 53 Second End of Adaptor (Fourth Embodiment)
13 Screen/Display 54 Housing
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14 Input Region 55a First Receptacle (Fourth Embodiment)
Housing 55b Second Receptacle (Fourth Embodiment)
16a First Pin 57 Custom Two-Pole Male Connector Outlet (Fourth Embodiment)
16b Second Pin 9' Cord/Cable
1' Fifth Embodiment of Adaptor 5b' Second Receptacle (Fifth Embodiment)
1*' Sixth Embodiment of Adaptor 5b*' Second Receptacle (Sixth Embodiment)
2' First End of Adaptor (Fifth 6a' First Pin (Fifth Embodiment) Embodiment)
2*' First End of Adaptor (Sixth 6a*' First Pin (Sixth Embodiment) Embodiment)
3' Second End of Adaptor (Fifth 6b' Second Pin (Fifth Embodiment) Embodiment)
3*' Second End of Adaptor (Sixth 6b*' Second Pin (Sixth Embodiment) Embodiment)
4' Housing 100 Indicator
4a' First Housing 100' Indicator
4b' Second Housing 200 Monitoring and Switching Device
a' First Receptacle (Fifth 200' Monitoring and Switching Device Embodiment)
a*' First Receptacle (Sixth Embodiment)

Claims (25)

P6370AU00 Claims
1. An IEC adaptor for interfacing a two-pole IEC lead with an IEC lead testing device which is normally adapted to receive a three-pole IEC lead.
2. The IEC adaptor according to claim 1, including a first end comprising a three-pole connector outlet, including: a first receptacle, being the live connection; a second receptacle, being the neutral connection; and a third receptacle, being the earth connection.
3. The IEC adaptor according to claim 2, wherein the three-pole connector outlet can be any one of: IEC 60320 C13 type; IEC 60320 C15 type; or other 3D shapes that are compatible with an IEC 60320 C14 connector inlet.
3. The IEC adaptor according to any one of claims 1 to 3, including a second end comprising a two-pole connector inlet, including: a first pin, being the live connection; and a second pin, being the neutral connection.
4. The IEC adaptor according to claim 3, wherein the two-pole connector inlet can be any one of: IEC 60320 C18 type; or other 3D shapes that are compatible with an IEC 60320 C17 connector outlet.
5. The IEC adaptor according to any one of claims 1 to 4, wherein the IEC adaptor further includes a cord or cable that connect the first end to the second end.
6. The IEC adaptor according to claim 5, wherein the cord or cable has a length in the range of 0.5 m to 5 m.
P6370AU00
7. The IEC adaptor according to claim 5 or 6, wherein the cord includes a cladding that is made of an electrically insulative material, preferably plastic.
8. The IEC adaptor according to any one of claims 1 to 4, wherein the adaptor further includes a housing that receives the first end and the second end.
9. The IEC adaptor according to claim 8, wherein the housing is made of an electrically insulative material, preferably plastic.
10. The IEC adaptor according to any one of claims 5 to 7, wherein the adaptor further includes: a first housing that receives the first end; and a second housing that receives the second end.
11. The IEC adaptor according to claim 10, wherein the first and second housings are made of an electrically insulative material, preferably plastic.
12. The IEC adaptor according to any one of claims 1 to 11, wherein the first end of the adaptor electrically connects with an IEC 60320 C14 connector inlet of the IEC lead testing device.
13. The IEC adaptor according to any one of claims 1 to 11, wherein the second end of the adaptor electrically connects with an IEC 60320 C17 connector outlet of the two-pole IEC lead.
14. The IEC adaptor according to claim 13, when dependent on claim 12, wherein, when the mains inlet of the two-pole IEC lead is connected to the mains outlet of the IEC lead testing device, the IEC lead testing device tests the insulative resistance and polarity status of the two-pole IEC lead.
15. The IEC adaptor according to claim 13, when not dependent on claim 12, wherein, when the IEC 60320 C14 connector inlet of the IEC lead testing device is connected to the outlet of a three-pole IEC lead, wherein the inlet of the three-pole IEC lead is connected to a household or industrial mains outlet, and the IEC 60320
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C17 connector outlet of the two-pole IEC lead is connected to the inlet of a Class I electrical appliance, the IEC lead testing device tests the leakage current of the two-pole IEC lead.
16. The IEC adaptor according to claim 13, when not dependent on claim 12, wherein, when the IEC 60320 C14 connector inlet of the IEC lead testing device is connected to the outlet of a three-pole IEC lead, wherein the inlet of the three-pole IEC lead is connected to a household or industrial mains outlet, the IEC 60320 C17 connector outlet of the two-pole IEC lead is connected to the inlet of a Class II electrical appliance, and the IEC lead testing device is connected to a probe plug that comprises a black probe tip that electrically contacts the conductive portions of the Class II electrical appliance, the IEC lead testing device tests the leakage current of the two-pole IEC lead.
17. The IEC adaptor according to any one of claims 1 to 16, wherein the adaptor further includes an indicator.
18. The IEC adaptor according to claim 17, wherein the indicator comprises any one or combination of: visual indicator, including a light emitting diode; audio indicator, including a buzzer; and vibration indicator, including a motor or piezoelectric component.
19. The IEC adaptor according to claim 17 or 18, wherein the indicator is connected to the live and neutral connections of the IEC adaptor.
20. The IEC adaptor according to claim 19, wherein the indicator comprises circuitry that restricts current flowing through the indicator to be at a minimum.
21. The IEC adaptor according to any one of claims 1 to 20, wherein the adaptor further includes a monitoring and switching device.
22. The IEC adaptor according to claim 21, wherein the monitoring and switching device is connected to the live and neutral connections of the IEC adaptor.
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23. The IEC adaptor according to claim 22, wherein the monitoring and switching device measures the potential difference of the live and neutral ports of the IEC adaptor.
24. The IEC adaptor according to claim 23, wherein, in the event that the potential difference is outside a predetermined threshold range by the monitoring and switching device, the monitoring and switching device will open circuit the live connection to prevent current from reaching the first end.
25. The IEC adaptor according to claim 24, wherein, when the inlet of the two-pole IEC lead is connected to a household or industrial mains outlet, the IEC 60320 C17 connector outlet of the two-pole IEC lead can be connected to the inlet of a Class I electrical appliance, via the adaptor, to provide electrical power to the Class I electrical appliance, that can be disconnected passively and/or actively if the monitoring and switching device of the adaptor detects a fault in the live or neutral connection of the adaptor.
AU2021204650A 2021-07-02 2021-07-02 Two-pole iec lead adaptor Pending AU2021204650A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2021204650A AU2021204650A1 (en) 2021-07-02 2021-07-02 Two-pole iec lead adaptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2021204650A AU2021204650A1 (en) 2021-07-02 2021-07-02 Two-pole iec lead adaptor

Publications (1)

Publication Number Publication Date
AU2021204650A1 true AU2021204650A1 (en) 2023-01-19

Family

ID=84889256

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2021204650A Pending AU2021204650A1 (en) 2021-07-02 2021-07-02 Two-pole iec lead adaptor

Country Status (1)

Country Link
AU (1) AU2021204650A1 (en)

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