CN213750217U - Adjustable load box for residual current protection circuit breaker electromagnetic compatibility test - Google Patents
Adjustable load box for residual current protection circuit breaker electromagnetic compatibility test Download PDFInfo
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- CN213750217U CN213750217U CN202022109867.4U CN202022109867U CN213750217U CN 213750217 U CN213750217 U CN 213750217U CN 202022109867 U CN202022109867 U CN 202022109867U CN 213750217 U CN213750217 U CN 213750217U
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Abstract
The utility model relates to a residual current protection circuit breaker electromagnetic compatibility tests technical field especially relates to a residual current protection circuit breaker electromagnetic compatibility tests adjustable load case, including the load case box, the load case box is equipped with door plant before the box, the door plant still is equipped with load power VL input binding post, load power VN input binding post, load control switch before the box, be equipped with load control unit in the load case box. The utility model discloses a load box passes through the adjustable size that passes through the electric current of circuit breaker of load control switch to realize the continuous adjustable of 1mA ~40A electric current with the cooperation of the hand slide rheostat of P1, the hand slide rheostat of P2, can satisfy the electromagnetic compatibility test of the circuit breaker of all rated surplus action current preferred values, the usable value is high.
Description
Technical Field
The utility model relates to a residual current protection circuit breaker electromagnetic compatibility tests technical field, especially relates to a residual current protection circuit breaker electromagnetic compatibility tests adjustable load case.
Background
According to the national standard GB 14048.2 part 2 of low-voltage switchgear and control devices: circuit breakers, GB 16916.1 "residual current circuit breakers without overcurrent protection (RCCB) for domestic and similar applications part 1: general rules, GB 16917.1 "residual current operated circuit breaker with overcurrent protection (RCBO) for domestic and similar applications part 1: general rules require that electromagnetic compatibility tests must be performed on products with residual current protection circuit breaker manufacturers. When the rated working voltage is applied to the circuit breaker in the process of electromagnetic compatibility test, or the rated working voltage has a range, the test is carried out at any convenient voltage in the range, the circuit breaker should not be tripped when an optional pole is electrified by 0.3I delta n (rated residual action current), and the circuit breaker should be tripped at each frequency when the circuit breaker is electrified by 1.25I delta n. Preferred values of rated residual operating current (I Δ n) specified in the national standard GB 14048.2: 0.006A, 0.01A, 0.03A, 0.1A, 0.3A, 0.5A, 1A, 3A, 10A, 30A, when the circuit breaker is electrified with a test current test point of 0.3I delta n or 1.25I delta n (see table 1), wherein the minimum test current is 0.0018A, the maximum test current is 37.5A, in order to ensure the precision of the small current output by the load box, the minimum adjustable interval of the current of the load box is 0.1mA, and no load box with the minimum adjustable interval of the current of 0.1mA exists at present.
TABLE 1 test Current test points
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides an experimental adjustable load case of residual current protection circuit breaker electromagnetic compatibility.
The utility model adopts the technical proposal that:
the adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test comprises a load box body, wherein the load box body is provided with a front box body door plate, and is characterized in that the front box body door plate is also provided with a load power supply VL input connecting terminal, a load power supply VN input connecting terminal and a load control switch, and a load control unit is arranged in the load box body;
the load control switch includes: a K1 load resistance control switch, a K2 load resistance control switch, a K3 load resistance control switch, a K4 load resistance control switch, a K5 load resistance control switch, a K6 load resistance control switch, a K7 load resistance control switch, a K8 load resistance control switch, a K9 load resistance control switch, a K10 load resistance control switch, a K11 load resistance control switch and a K12 load resistance control switch;
the load control unit includes: the device comprises a fuse, a voltmeter, an ammeter, an R1 load resistor, an R2 load resistor, an R3 load resistor, an R4 load resistor, an R5 load resistor, an R6 load resistor, an R7 load resistor, an R8 load resistor, an R9 load resistor, an R10 load resistor, a P1 hand-operated slide rheostat and a P2 hand-operated slide rheostat;
the load power supply VL input connecting terminal, the fuse, the ammeter, the R1 load resistor and the load power supply VN input connecting terminal are connected in series, and the voltmeter, the R2 load resistor, the R3 load resistor, the R4 load resistor, the R5 load resistor, the R6 load resistor, the R7 load resistor, the R8 load resistor, the R9 load resistor, the R10 load resistor, the P1 hand-operated slide rheostat, the P2 hand-operated slide rheostat and the R1 load resistor are connected in parallel;
the R1 load resistor is connected in series with a K1 load resistor control switch, the R2 load resistor is connected in series with a K2 load resistor control switch, the R3 load resistor is connected in series with a K3 load resistor control switch, the R4 load resistor is connected in series with a K4 load resistor control switch, the R5 load resistor is connected in series with a K5 load resistor control switch, the R6 load resistor is connected in series with a K6 load resistor control switch, the R7 load resistor is connected in series with a K7 load resistor control switch, the R8 load resistor is connected in series with a K8 load resistor control switch, the R9 load resistor is connected in series with a K9 load resistor control switch, the R10 load resistor is connected in series with a K10 load resistor control switch, the P1 hand-cranking varistor is connected in series with a K11 load resistor control switch, and the P2 hand-cranking varistor is connected in series with a K12 load resistor control switch.
Further, the adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test is characterized in that a door lock is arranged on a front door plate of the box body and connected with the load box body.
Further, the adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test is characterized in that the voltmeter and the ammeter are arranged on the front door plate of the box body.
Further, an experimental adjustable load case of residual current protection circuit breaker electromagnetic compatibility, a serial communication port, the load case box still is equipped with load case right side board, load case left side board, load case rear panel, the hand slide-wire rheostat of P1, the hand slide-wire rheostat of P2 are established on the load case right side board, still be equipped with right side board ventilation hole, box right side fan on the load case right side board, be equipped with left side board ventilation hole, box left side fan on the load case left side board, be equipped with the rear panel ventilation hole on the load case rear panel.
Further, the adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test is characterized in that a voltmeter, an ammeter and a fan working power supply switch and a voltmeter, an ammeter and a fan working power supply socket are further arranged on a right side plate of the load box, a working power supply L is connected with the voltmeter, the ammeter and the fan working power supply switch in series, and then working power supplies of the voltmeter, the ammeter, a right side fan of the box body and a left side fan of the box body are connected between the voltmeter, the ammeter and the fan working power supply switch and a working power supply N in parallel.
Further, the adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test is characterized in that universal wheels are arranged at the bottom of the load box body.
The utility model has the advantages that:
the utility model discloses a load box passes through the adjustable size that passes through the electric current of circuit breaker of load control switch to realize the continuous adjustable of 1mA ~40A electric current with the cooperation of the hand slide rheostat of P1, the hand slide rheostat of P2, can satisfy the electromagnetic compatibility test of the circuit breaker of all rated surplus action current preferred values, the usable value is high.
Drawings
Fig. 1 is a schematic structural diagram of the load box of the present invention.
Fig. 2 is a schematic view of the right side plate of the load box of the present invention.
Fig. 3 is a schematic view of the rear panel of the load box of the present invention.
Fig. 4 is a schematic view of the load control structure of the present invention.
Fig. 5 is the utility model discloses voltmeter, ampere meter and fan working power supply schematic diagram.
In the figure, 1: a load box body; 2: a front door plate of the box body; 3: a load power supply VL input connecting terminal; 4: a load power supply VN input connecting terminal; 5: a load control switch; 501: k1 load resistance control switch; 502: k2 load resistance control switch; 503: k3 load resistance control switch; 504: k4 load resistance control switch; 505: k5 load resistance control switch; 506: k6 load resistance control switch; 507: k7 load resistance control switch; 508: k8 load resistance control switch; 509: k9 load resistance control switch; 510: k10 load resistance control switch; 511: k11 load slider rheostat control switch; 512: a load slide rheostat control switch; 6: a voltmeter; 7: an ammeter; 8: an upper cover plate of the load box; 9: a right side plate of the load box; 10: a right side plate vent; 11: p1 hand slide rheostat; 12: p2 hand slide rheostat; 13: a door lock; 14: a fan on the right side of the box body; 15: a voltmeter, an ammeter and a fan working power switch; 16: a voltmeter, an ammeter and a fan working power socket; 1601: a working power supply L; 1602: a working power supply N; 17: a universal wheel; 18: a left side panel vent; 19: a left side plate of the box body; 20: a fan on the left side of the box body; 21: a rear panel vent; 22: a load box rear panel; 23: a load resistance; 2301: r1 load resistance; 2302: r2 load resistance; 2303: r3 load resistance; 2304: r4 load resistance; 2305: r5 load resistance; 2306: r6 load resistance; 2307: r7 load resistance; 2308: r8 load resistance; 2309: r9 load resistance; 2310: r10 load resistance; 24: and a fuse.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1.
As shown in fig. 1-5, an adjustable load box for an electromagnetic compatibility test of a residual current protection circuit breaker comprises a load box body 1, wherein the load box body 1 is provided with a front box door panel 2, the front box door panel 2 is further provided with a load power supply VL input connection terminal 3, a load power supply VN input connection terminal 4 and a load control switch 5, and a load control unit is arranged in the load box body 1;
the load control switch 5 includes: a K1 load resistance control switch 501, a K2 load resistance control switch 502, a K3 load resistance control switch 503, a K4 load resistance control switch 504, a K5 load resistance control switch 505, a K6 load resistance control switch 506, a K7 load resistance control switch 507, a K8 load resistance control switch 508, a K9 load resistance control switch 509, a K10 load resistance control switch 510, a K11 load resistance control switch 511, and a K12 load resistance control switch 512;
the load control unit includes: the fuse 24, the voltmeter 6, the ammeter 7, the R1 load resistor 2301, the R2 load resistor 2302, the R3 load resistor 2303, the R4 load resistor 2304, the R5 load resistor 2305, the R6 load resistor 2306, the R7 load resistor 2307, the R8 load resistor 2308, the R9 load resistor 2309, the R10 load resistor 2310, the P1 hand cranking slide wire varistor 11, and the P2 hand cranking slide wire varistor 12;
the load power supply VL input connecting terminal 3, the fuse 24, the ammeter 7, the R1 load resistor 2301 and the load power supply VN input connecting terminal 4 are connected in series, and the voltmeter 6, the R2 load resistor 2302, the R3 load resistor 2303, the R4 load resistor 2304, the R5 load resistor 2305, the R6 load resistor 2306, the R7 load resistor 2307, the R8 load resistor 2308, the R9 load resistor 2309, the R10 load resistor 2310, the P1 hand cranking slide rheostat 11, the P2 hand cranking slide rheostat 12 and the R1 load resistor are connected in parallel;
the R1 load resistor 2301 is connected in series with the K1 load resistor control switch 501, the R2 load resistor 2302 is connected in series with the K2 load resistor control switch 502, the R3 load resistor 2303 is connected in series with the K3 load resistor control switch 503, the R4 load resistor 2304 is connected in series with the K4 load resistor control switch 504, the R5 load resistor 2305 is connected in series with the K5 load resistor control switch 505, the R6 load resistor 2306 is connected in series with the K6 load resistor control switch 506, the R7 load resistor 2307 is connected in series with the K7 load resistor control switch 507, the R8 load resistor 2308 is connected in series with the K8 load resistor control switch 508, the R9 load resistor 2309 is connected in series with the K9 load resistor control switch 509, the R10 load resistor 2310 is connected in series with the K10 load resistor control switch 510, the P1 slide resistor varistor 11 is connected in series with the K11 load resistor control switch 511, and the P2 slide resistor 12 is connected in series with the K12 load resistor control switch 512.
When the K1 load resistance control switch 501 is turned on, the current of the R1 load resistor 2301 is 20A, when the K2 load resistance control switch 502 is turned on, the current of the R2 load resistor 2303 is 10A, when the K3 load resistance control switch 503 is turned on, the current of the R3 load resistor 2304 is 5A, when the K4 load resistance control switch 504 is turned on, the current of the R4 load resistor 2304 is 2A, when the K5 load resistance control switch 505 is turned on, the current of the R5 load resistor 2305 is 2A, when the K6 load resistance control switch 506 is turned on, the current of the R6 load resistor 2306 is 1A, when the K7 load resistance control switch 507 is turned on, the current of the R7 load resistor 2307 is 0.5A, when the K8 load resistance control switch 508 is turned on, the current of the R2308 load resistor 2308 is 0.2A, when the K9 load resistance control switch is turned on, the R92 is 0.9 a, when the load resistance control switch 2308 is turned on, the load resistance switch 510 is turned on, the current of R10 load resistor 2310 is 0.1A.
When the K11 load resistance control switch 511 is turned on, the adjustable current range of the P1 hand-cranking slide-wire rheostat 11 is: 15 mA-100 mA; the minimum stepping current of the rheostat is 1 mA; when the K12 load resistance control switch 512 is turned on, the adjustable current range of the P2 hand trolley varistor 12 is: 1 mA-15 mA, and the minimum stepping current of the rheostat is 0.1 mA.
Furthermore, a door lock 13 is arranged on the front door plate 2 of the box body, and the door lock 13 is connected with the load box body 1. The voltmeter 6 and the ammeter 7 are arranged on the front door plate 2 of the box body. The load box body 1 is further provided with a load box right side plate 9, a load box left side plate 19 and a load box rear panel 22, the P1 hand-operated slide rheostat 11 and the P2 hand-operated slide rheostat 12 are arranged on the load box right side plate 9, the load box right side plate 9 is further provided with a right side plate ventilation hole 10 and a box body right side fan 14, the load box left side plate 19 is provided with a left side plate ventilation hole 18 and a box body left side fan 20, and the load box rear panel 22 is provided with a rear panel ventilation hole 21. The bottom of the load box body 1 is provided with universal wheels 17.
The right side plate 9 of the load box is also provided with a voltmeter, an ammeter and a fan working power switch 15, and a voltmeter, an ammeter and a fan working power socket 16, the working power supply L1601 is connected with the voltmeter, the ammeter and the fan working power switch 15 in series, and then working power supplies of the voltmeter 6, the ammeter 7, the right side fan 14 of the box body and the left side fan 20 of the box body are respectively connected between the voltmeter, the ammeter and the fan working power switch 15 and the working power supply N1602 in parallel.
During testing, the load box is connected into a test circuit according to the requirements of GB 14048.2, GB 16916.1 and GB 16917.1. The load control switch 5 can adjust the current passing through the circuit breaker, and the load control switch is matched with the P1 hand-operated slide rheostat 11 and the P2 hand-operated slide rheostat 12 to achieve continuous adjustment of 1 mA-40A current.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test comprises a load box body (1), wherein the load box body (1) is provided with a front box body door plate (2), and is characterized in that the front box body door plate (2) is further provided with a load power supply VL input wiring terminal (3), a load power supply VN input wiring terminal (4) and a load control switch (5), and a load control unit is arranged in the load box body (1);
the load control switch (5) comprises: a K1 load resistance control switch (501), a K2 load resistance control switch (502), a K3 load resistance control switch (503), a K4 load resistance control switch (504), a K5 load resistance control switch (505), a K6 load resistance control switch (506), a K7 load resistance control switch (507), a K8 load resistance control switch (508), a K9 load resistance control switch (509), a K10 load resistance control switch (510), a K11 load resistance control switch (511) and a K12 load resistance control switch (512);
the load control unit includes: the device comprises a fuse (24), a voltmeter (6), an ammeter (7), an R1 load resistor (2301), an R2 load resistor (2302), an R3 load resistor (2303), an R4 load resistor (2304), an R5 load resistor (2305), an R6 load resistor (2306), an R7 load resistor (2307), an R8 load resistor (2308), an R9 load resistor (2309), an R10 load resistor (2310), a P1 hand-operated slide rheostat (11) and a P2 hand-operated slide rheostat (12);
the load power supply VL input connecting terminal (3), the fuse (24), the ammeter (7), the R1 load resistor (2301) and the load power supply VN input connecting terminal (4) are connected in series, and the voltmeter (6), the R2 load resistor (2302), the R3 load resistor (2303), the R4 load resistor (2304), the R5 load resistor (2305), the R6 load resistor (2306), the R7 load resistor (2307), the R8 load resistor (2308), the R9 load resistor (2309), the R10 load resistor (2310), the P1 hand-operated slide rheostat (11), the P2 hand-operated slide rheostat (12) and the R1 load resistor (2301) are connected in parallel;
the R1 load resistor (2301) is connected in series with a K1 load resistor control switch (501), the R2 load resistor (2302) is connected in series with a K2 load resistor control switch (502), the R3 load resistor (2303) is connected in series with a K3 load resistor control switch (503), the R4 load resistor (2304) is connected in series with a K4 load resistor control switch (504), the R5 load resistor (2305) is connected in series with a K5 load resistor control switch (505), the R6 load resistor (2306) is connected in series with a K6 load resistor control switch (506), the R7 load resistor (2307) is connected in series with a K7 load resistor control switch (507), the R8 load resistor (2308) is connected in series with a K8 load resistor control switch (508), the R9 load resistor (2309) is connected in series with a K9 load resistor control switch (509), the R10 load resistor (2310) is connected in series with a K8 load resistor control switch (510), and a K5857311) is connected in series with a load resistor control switch (511), the P2 hand-operated slide rheostat (12) is connected with the K12 load resistance control switch (512) in series.
2. The adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test according to claim 1, characterized in that a door lock (13) is arranged on a front door panel (2) of the box body, and the door lock (13) is connected with the load box body (1).
3. The adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test according to claim 2, characterized in that the voltmeter (6) and the ammeter (7) are arranged on the front door panel (2) of the box body.
4. The adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test according to claim 3, wherein the load box body (1) is further provided with a load box right side plate (9), a load box left side plate (19) and a load box rear panel (22), the P1 hand-operated slide rheostat (11) and the P2 hand-operated slide rheostat (12) are arranged on the load box right side plate (9), the load box right side plate (9) is further provided with a right side plate ventilation hole (10) and a box right side fan (14), the load box left side plate (19) is provided with a left side plate ventilation hole (18) and a box left side fan (20), and the load box rear panel (22) is provided with a rear panel ventilation hole (21).
5. The adjustable load box for the residual current protection circuit breaker electromagnetic compatibility test according to claim 4, wherein a voltmeter, an ammeter and a fan working power switch (15) and a voltmeter, an ammeter and a fan working power socket (16) are further arranged on the right side plate (9) of the load box, a working power supply L (1601) is connected in series with the voltmeter, the ammeter and the fan working power switch (15), and then working power supplies of the voltmeter (6), the ammeter (7), the box right side fan (14) and the box left side fan (20) are respectively connected in parallel between the voltmeter, the ammeter and the fan working power switch (15) and the working power supply N (1602).
6. The residual current protection circuit breaker electromagnetic compatibility test adjustable load box according to claim 5, characterized in that the universal wheels (17) are arranged at the bottom of the load box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022109867.4U CN213750217U (en) | 2020-09-23 | 2020-09-23 | Adjustable load box for residual current protection circuit breaker electromagnetic compatibility test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022109867.4U CN213750217U (en) | 2020-09-23 | 2020-09-23 | Adjustable load box for residual current protection circuit breaker electromagnetic compatibility test |
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| Publication Number | Publication Date |
|---|---|
| CN213750217U true CN213750217U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022109867.4U Active CN213750217U (en) | 2020-09-23 | 2020-09-23 | Adjustable load box for residual current protection circuit breaker electromagnetic compatibility test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213750217U (en) |
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- 2020-09-23 CN CN202022109867.4U patent/CN213750217U/en active Active
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