AU2012307073B2 - Control system and method - Google Patents

Control system and method Download PDF

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Publication number
AU2012307073B2
AU2012307073B2 AU2012307073A AU2012307073A AU2012307073B2 AU 2012307073 B2 AU2012307073 B2 AU 2012307073B2 AU 2012307073 A AU2012307073 A AU 2012307073A AU 2012307073 A AU2012307073 A AU 2012307073A AU 2012307073 B2 AU2012307073 B2 AU 2012307073B2
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AU
Australia
Prior art keywords
load
control system
protection
settings
protocol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU2012307073A
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AU2012307073A1 (en
Inventor
Geoffrey Robert SWEENEY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEPEAN POWER Pty Ltd
Original Assignee
NEPEAN POWER Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2011903594A external-priority patent/AU2011903594A0/en
Application filed by NEPEAN POWER Pty Ltd filed Critical NEPEAN POWER Pty Ltd
Priority to AU2012307073A priority Critical patent/AU2012307073B2/en
Publication of AU2012307073A1 publication Critical patent/AU2012307073A1/en
Application granted granted Critical
Publication of AU2012307073B2 publication Critical patent/AU2012307073B2/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/03—Application domotique, e.g. for house automation, bus connected switches, sensors, loads or intelligent wiring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/006—Calibration or setting of parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/14—Protecting elements, switches, relays or circuit breakers

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

A control system and method to operate a switching device, particularly to selectively connect a power supply to a load. The control system (1) including a reader (5) to read an identification plate of a load (4) and transmit an identification signal (7), and, a controller (6). The controller (6) includes a memory (11), which has a repository of protocol settings pertaining to a plurality of loads, and, a processor (9), which receives the identification signal and communicates with the memory (11) to provide a control signal to thereby operate the switch (2).

Description

PCT/AU2012/001043 WO 2013/033759 -1 -
CONTROL SYSTEM AND METHOD
BACKGROUND OF THE INVENTION 5 The present invention relates to a control system and method, to operate a switching device, and in particular, to a control system and method to selectively connect a power supply to a load.
DESCRIPTION OF THE PRIOR ART 10
The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as, an acknowledgement or admission or any form of suggestion that prior publication (or information derived from it) or known matter forms part of the common general 15 knowledge in the field of endeavour to which this specification relates.
Whist this invention is primarily for use in hazardous and dangerous underground mining environments, it is not limited to that particular field of use. The present invention is suitable for most electrically powered loads such as motors, cables, machines, j 20 transformers and the like in both underground, above ground mining, and other applications.
It is commonly known that high power electrical equipment such as motors and transformers are typically connected to a power source via switchgear. This switchgear is 25 in general set up for a particular piece of equipment so that once certain predetermined load characteristics vary sufficiently the power will be disconnected to prevent any potentially hazardous conditions which may result in the loss of equipment or life. Any set up or adjustment of the switchgear is typically manually performed which, due to operator fatigue or inadvertence, may result in incorrect adjustment. 30
In underground mining applications, the switchgear is typically located within a PCT/AU2012/001043 WO 2013/033759 -2- protective housing, to ensure that any sparks generated during switching are not available to ignite flammable gases such as methane which may be present.
Such housings include walls formed from thick steel plate and are accessible 5 through an opening which is closed by a door. Such doors are generally attached about their periphery to an adjacent wall by a plurality of spaced apart bolts. Accordingly, to set up or adjust the switchgear for a particular piece of equipment necessitates the opening of the steel door by removing all the bolts, the setting of the switchgear, and the subsequent replacement of the door. Following this procedure testing should be conducted to ensure 10 safe operation. If the switqhgear is not correctly set this must be repeated. Accordingly, and reconfiguration is both time consuming and labour intensive.
Australian Patent No. 704930 describes a 'load control module' for controlling switch gear. The 'load control module' of Australian Patent No. 704930 operates by having 15 a sensor unit associated with the load. The sensor unit provides a signal which transmits load protection data from the load to a controller. The controller then provides a signal, dependent upon the signal from the sensor unit, to isolate the load from the power source when, during operation, the load does not comply with the load protection data. 20 Whilst the 'load control module' of Australian Patent No. 704930 suffices to 'sense' a particular load during operation to determine whether it complies with predetermined load protection data, it has a number of inherent disadvantages and shortcomings.
The device of Australian Patent No. 704930 relies on the transmission of the load 25 protection data from a remote location at the load back to the 'load control module'.
This therefore identifies a need to provide an alternative device for controlling the operation of a switching device, which overcomes the disadvantages of the prior art. WO 2013/033759 PCT/AU2012/001043 -3-
SUMMARY OF THE INVENTION
The present invention seeks to provide a system and method to operate a switching device, which overcomes the disadvantages, or at least provides an alternative to, prior art 5 switching devices.
The present invention also seeks to provide a system and method to operate a switching device, whereby the data protection settings are provided local to the switching device, rather than at a remote location of a load. 10
The present invention also seeks to provide a system and method to operate a switching device whereby the data protection settings are not required to be sensed at a load, but rather, a reader is used to read a name plate or the like to identify the load, and this identification information only is then transmitted back to the controller. 15
The present invention also seeks to provide a system and method to operate a switching device whereby a memory device, capable of storing data protection settings of a plurality of potential loads, is provided. 20 In one broad form, the present invention provides a control system to operate a switching device to selectively connect a power supply to a load, said control system including: a reader, to read an identification plate of a load or store load identification, and, transmit an identification signal of an identified load; 25 a controller, including: a memory device, having a repository of protocol settings pertaining to a plurality of identified loads; and, a processor, to receive said identification signal, to communicate with said memory device to selectively obtain protocol settings associated with said identified load, 30 and, to provide a control signal to operate said switching device according to said protocol settings. WO 2013/033759 PCT/AU2012/001043 -4-
Ih a further broad form, the present invention provides a method of operating a switching device to selectively connect a power supply to a load, said method including the steps of: reading an identification of a load; transmitting an identification signal of said load; selecting protocol setting associated with said load from a memory device, the memory device including a repository of protocol settings pertaining to a plurality of identified loads; and operating said switching device according to said protocol settings to thereby connect said power supply to said load.
Preferably, said reader operates using any one or combination of: optical character recognition; bar code reader/scanner; configured memory.
Also preferably, said identification signal is transmitted by any one or combination of: infra-red, Bluetooth or other wireless communications; wire, cable, fibre-optics or the like.
In a preferred form, said controller is provided in a protective housing formed of steel plate or the like.
In a preferred embodiment, said controller includes a data communications port for setup and monitoring via a communications protocol device, including a PLC, a PC or a human interface screen.
Preferably, said memory device stores energy consumption, history, earth leakage protection settings, overload protection settings, etc. WO 2013/033759 PCT/AU2012/001043 -5-
In a preferred form, the system/method further includes a monitoring device. Preferably, said monitoring device is adapted to monitor any one or combination 5 of: arc flash protection; power; certified SIL level; harmonic protection. 1°
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will become more fully understood from the following detailed description of a preferred but non-limiting embodiment thereof, described in 15 connection with the accompanying drawings, wherein:
Figure 1 illustrates a block diagram of the basic components of the control system in accordance with the present invention, showing how the system controls the operation of a switching device to connect a power supply to a load; and, 20
Figure 2 details various component features of the controller and the reader.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 25 Throughout the drawings, like numerals will be used to identify similar features, except where expressly otherwise indicated.
As shown in Fig. 1, the control system, generally designated by the numeral 1 is adapted to operate a switching device 2 to selectively connect a power supply 3 to a load 4. 30 The load 4 may include but is not limited to a motor, machine, transformer, or other load. The load may be utilised, but is not limited to use in underground or above ground mining PCT/AU2012/001043 WO 2013/033759 -6- environments, or any other environment. The device of the present invention is particularly suitable for use in hazardous conditions whereby, any incorrect adjustment of the switching device may result in a dangerous situation. 5 The control system of the present invention includes a reader 5, and a controller 6.
The reader 5 is adapted to read name plate details or other identification details of a load 4, identified by numeral 7, and then transmit an identification signal 8 identifying the load 4 to the controller 6, and in particular, to a processor 9 of the controller 6. 10
The processor 9 receives the identification signal 8 then communicates via communication channel 10 with a memory device 11.
The memory device 11 includes a repository of protocol settings pertaining to a 15 plurality of potential loads 4. As a result of receipt of signal 8, the processor 9 determines from interrogating the memory device 11 the relevant protocols settings pertaining to the connected load 4 and thereby provides a control signal 12 to the switching device 2 to thereby operate the switching device 2 such that the power supply 3 is either connected or disconnected to the load 4. Ongoing connection or disconnection of the power supply 3 to 20 the load 4 is determined by the protocol settings in the memory device 11 pertaining to the identified load 4.
It will be appreciated by persons skilled in the art that the provision of a reader 5 to read identification details of a load 4 is unique to the present invention. The reader 5 may 25 operate in a variety of manners including but not limited to any one or combination of utilising optical character recognition to read a name plate associated with load 4, or, by utilising a bar code reader or scanner to read an appropriate bar code provided on load 4. Other forms of reader 5 appropriate to this purpose will become apparent to persons skilled in the art, and these readers should be considered to fall within the scope of this invention. 30
The reader 5 may utilise any one or combination of infra-red, Bluetooth or other PCT/AU2012/001043 WO 2013/033759 -7- wireless or communication means or, a hard wired cable or fibre-optic pathway to transmit the information from the load 4 to the reader 5 and from the reader 5 to the processor 9.
The controller 6 is preferably provided in a protective housing suitable for use in a 5 hazardous environment. This may include, but is not limited to being formed of steel plate or the like such that it may be fire proof, explosion proof, and the like. Other suitable materials for provision of the housing of the controller will become apparent to persons skilled in the art. 10 The controller 6 may include a data communications port, a human interface, or any other form of interface 13 for set up and monitoring of the communication protocols. Suitable human interfaces may include a PLC, a PC, or any other human interface screen. The memory device 11 may optionally store other information pertaining to the load, including, but not limited to energy consumption information, other history information, 15 earth leakage protection settings, overload protection settings, etc.
The control system of the present invention may further include a monitoring device for ongoing monitoring of the load 4 during operation. Any one or combination of , the following may be monitored 20
Arc flash protection; power; certified SIL level; harmonic protection. 25
In Fig. 2 is shown various component locks of the present invention, which are hereinafter described.
Description of Major Items 30 SD - Sensing Device PCT/AU2012/001043 WO 2013/033759 -8-
Typically a stainless steel device complete with internally mounted electronics. Live line indication, overload CT’s, contactor control, EL toroid connection, fibre optic interface and frozen contactor flag relay.
Approximately 250 mm wide by 250mm high and 200mm deep. Bolted or quick 5 connect installation. APMD - Automated Protection and Monitoring Device
Typically an aluminum device complete with internally mounted electronics. LED indication, earth continuity connection, circuit breaker control, human interface 10 connection, fibre optic interface and memory module data connection.
Approximately 100mm wide by 100mm high and 100mm deep. Din rail mounted for quick installation. PRD - Plant Recognition Device 15 Typically a stainless steel device complete with internally mounted electronics. LED indication, earth continuity connection, temperature connections, analog/vibration connections, human interface connection, fibre optic interface and data connection.
Approximately 100mm wide by 100mm high and 50mm deep. Magnetic or Din rail mounted for quick installation. 20 MM - Memory Module Device
Typically an aluminum device complete with internally mounted electronics. LED indication, restricted control interlock, fibre optic interface, Ethernet connection and APMD data connection. 25 Approximately 100mm wide by 100mm high and 100mm deep. Din rail mounted for quick installation.
Centralized repository of protection parameters - Either per groups of outlets, or common to multiple groups. 30 HI - Human Interface Device
Typically a colour touch screen device complete with internally mounted WO 2013/033759 PCT/AU2012/001043 -9- electronics and APMD data connection.
Approximately 120mm wide by 100mm high and 50mm deep. Surface mounted and rated at IP56 or better. 5 CPD - Communications Protocol Device
Typically an industrial PLC or PC that allows remote monitoring and setup of the Memory Module (MM). Typically protocol is Ethernet, also allows connection of an industrial screen or human interface via Ethernet. 10 Principals of Operation 1. Automated Set Up. la. The Automated Protection + Monitoring Device (APMD) is connected to the remote plant including a plant recognition device. 15 lb. The Plant Recognition Device (PRD) identifies the plant via a single data communications wire. lc. The Automated Protection + Monitoring Device (APMD) reads the plant recognition and communicates with the Memory Module (MM), to determine the required protection settings, energy consumption and history. 20 2. Programming Protection Settings
The Memory Module (MM) is complete with a data communication’s port that allows setup and monitoring via standard communications protocol devices, including but not limited to: PLC’s, Industrial PC’s and human interface screens. 25 Set up of the Memory Module (MM) may alternatively be monitored and configured via a local human interface screen, connected to the Automated Protection + Monitoring Device (APMD). 3. Earth Leakage 30 Earth leakage protection settings are stored in the Memory Module (MM) and are compared to the levels sensed by the sensoring device. Based on algorithm excessive PCT/AU2012/001043 WO 2013/033759 - 10- values will result in an interruption of power to the plant. 4. Overload
Overload protection settings are stored in the Memory Module (MM) and are 5 compared to the levels sensed by the sensoring device, based on the algorithm excessive values will result in an interruption of power to the plant.
Characteristics of load and automated adaption of protection parameters and techniques by analysis of current draw - with guarantee of meeting ‘fixed trips’. 10 5. Instantaneous
Overload protection settings are stored in the Memory Module (MM) and are compared to the levels sensed by the sensoring device, based on the algorithm excessive values will result in an interruption of power to the plant. 15 6. Earth Fault Lock Out
Prior to allowing the remote plant to be energized, the connected cable and plant are tested for leakage to earth via injected DC voltage. Excessive levels of leakage will prevent the energization of the remote plant and cable.
Analysis of voltage and current across all outlets of (e.g.) a DCB, to do on-line 20 ductor testing, and be able to discriminate between high resistance in individual outlet circuits and the normal feeder impedance. This would mitigate hot joints and therefore things like insulators failing due to temperature and all the resultant hazards. Identifying cables in some way to allow trending of individual cables regardless of how they are moved around between outlets and machines. 25 7. Earth Continuity
The single data communication wire connecting the Automated Protection + Monitoring Device (APMD) to the Plant Recognition Device (PRD) is used to monitor the continuity of bonding to earth at the remote load, in the event the bond to earth is of a high 30 resistance than power to the remote plant is interrupted or prevented from energizing. WO 2013/033759 PCT/AU2012/001043 -11 -
Pilot Communications
Data transfer using pilot conductor
Operates concurrently with protection functionality that uses pilot Allows connection of additional devices at ends 5 Redundancy of transfer of data
Automatic variation of technique used to transfer data, dependent on condition of pilot
Increased safety by use of multiple safety checking techniques on single pilot Characterization of properties of power conductors of cable by use of pilot. 10 8, Frozen Contactor
The sensoring device monitors voltage which is compared to the controlled switch status if voltage is detected when the controlled switch should be open. The Automated Protection + Monitoring Device (APMD) will provide a signal to interrupt power at a 15 higher level. 9, Miscellaneous Protection Functions
The invention provides additional protection functions, including but not limited to: Phase Loss 20 Asymmetry
Under Voltage
High Voltage Breakdown Insulation.
Acoustic arc-flash detection UV arc-flash detection 25 10, Start Up Process 1. The Automated Protection + Monitoring Device (APMD) is connected to the Plant Recognition Device (PRD). 2. The Plant Recognition Device (PRD) communicates to the Automated Protection + 30 Monitoring Device (APMD) the plant recognition. 3. The Automated Protection+ Monitoring Device (APMD) reads the Memory PCT/AU2012/001043 WO 2013/033759 -12-
Module (MM) to determine required protection settings and functions. 4. A start signal is initiated. 5. The earth continuity status is monitored (continuously) 6. The sensoring device performs an earth fault lock out test. 5 7. If the earth continuity and earth fault lock out test continue to be healthy, a high voltage insulation test is performed. 8. If all the tests are healthy the Automated Protection + Monitoring Device (APMD) will allow the switching device to close. 9. The Automated Protection + Monitoring Device (APMD) will continue to monitor 10 the protection functions of the device. If a trip status is detected the switching devices controlled so as to interrupt power to the remote plan 11. Segregation
Segregation of protection system functionality using non-electrical medium (prevents 15 dangerous voltages invading otherwise ELV area) ‘Power’ area (dangerous, voltages, etc.) electrically separated from ‘control’ area. 12. Parallel Feeder Protection
Parallel Feeder System 20 Phase transposal detection
Detect effective phase-phase short-circuit via parallel feeders prior to energization.
Feeder impedance imbalance detection Impedance imbalance results in unequal load sharing between feeders. 25 13. Harmonic Protection
Harmonic trip if protected hazard (earth inductance = touch potential at high frequency). Includes wideband measurement of earth leakage current.
Includes wideband measurement of earth impedance. PCT/AU2012/001043 WO 2013/033759 - 13- VARIATIONS and modifications to the control system and method
It will be appreciated that the present invention has been hereinbefore described with reference to particular examples. Persons skilled in the art will appreciate that numerous variations and modifications will become apparent thereto. All such variations and modifications should be considered to fall within the scope of the invention as broadly hereinbefore described, and as hereinafter claimed.

Claims (9)

  1. The claims defining the present invention are as follows:
    1. A control system to operate a switching device to selectively connect a power supply to a load, said control system including: a reader, to read an identification plate of a load, and, transmit an identification signal of an identified load; a controller, including: a memory device, having a repository of protocol settings pertaining to a plurality of identified loads; and, a processor, to receive said identification signal, to communicate with said memory device to selectively obtain protocol settings associated with said identified load, and, to provide a control signal to operate said switching device according to said protocol settings.
  2. 2. A control system as claimed in claim 1, wherein said reader operates using any one or combination of: optical character recognition; bar code reader/scanner; configured memory.
  3. 3. A control system as claimed in claims 1 or 2, wherein said identification signal is transmitted by any one or combination of: infra-red, Bluetooth or other wireless communications; wire, cable, fibre-optics or the like.
  4. 4. A control system as claimed in any one of claims 1 to 3, wherein said controller is provided in a protective housing formed of steel plate or the like.
  5. 5. A control system as claimed in any one of claims 1 to 4, wherein said controller includes a data communications port for setup and monitoring via a communications protocol device, including a PLC, a PC or a human interface screen.
  6. 6. A control system as claimed in any one of claims 1 to 5, wherein said memory device stores energy consumption, history, earth leakage protection settings, overload protection settings, etc.
  7. 7. A control system as claimed in any one of claims 1 to 6, further including a monitoring device.
  8. 8. A control system as claimed in claim 7, wherein said monitoring device is adapted to monitor any one or combination of: arc flash protection; power; certified SIL level; harmonic protection.
  9. 9. A method of operating a switching device to selectively connect a power supply to a load, said method including the steps of: reading an identification plate of a load; transmitting an identification signal of said load; selecting protocol setting associated with said load from a memory device, the memory device including a repository of protocol settings pertaining to a plurality of identified loads; and operating said switching device according to said protocol settings to thereby connect said power supply to said load.
AU2012307073A 2011-09-05 2012-09-03 Control system and method Ceased AU2012307073B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2012307073A AU2012307073B2 (en) 2011-09-05 2012-09-03 Control system and method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU2011903594A AU2011903594A0 (en) 2011-09-05 Control system and method
AU2011903594 2011-09-05
AU2012307073A AU2012307073B2 (en) 2011-09-05 2012-09-03 Control system and method
PCT/AU2012/001043 WO2013033759A1 (en) 2011-09-05 2012-09-03 Control system and method

Publications (2)

Publication Number Publication Date
AU2012307073A1 AU2012307073A1 (en) 2014-03-06
AU2012307073B2 true AU2012307073B2 (en) 2016-11-24

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AU2012307073A Ceased AU2012307073B2 (en) 2011-09-05 2012-09-03 Control system and method

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AU (1) AU2012307073B2 (en)
WO (1) WO2013033759A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060050464A1 (en) * 2004-09-03 2006-03-09 Watlow Electric Manufacturing Company Integrally coupled power control system having a solid state relay
US20070247768A1 (en) * 2006-04-21 2007-10-25 Square D Company Wireless handheld device and circuit breaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1042989C (en) * 1993-08-24 1999-04-14 金属制造有限公司 Load control module

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060050464A1 (en) * 2004-09-03 2006-03-09 Watlow Electric Manufacturing Company Integrally coupled power control system having a solid state relay
US20070247768A1 (en) * 2006-04-21 2007-10-25 Square D Company Wireless handheld device and circuit breaker

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Publication number Publication date
WO2013033759A1 (en) 2013-03-14
AU2012307073A1 (en) 2014-03-06

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