CIRCUIT BREAKER TEST KITS
Video
Theory
KPM Circuit Breaker Analyzer
The functions of Circuit Breaker Analyzer cover all testing items of high voltage circuit breakers. Comparing with the traditional circuit breaker tester KPM Circuit Breaker Analyzer (KPM-CBA) has the following unique advantages:
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Vibration Analysis for mechanical characteristics
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Distance & Speed Analysis of moving contacts
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Static Contact resistance measurement of 100A
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Dynamic Contact Resistance Measurement of 100A
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Low voltage pickup test on coils from 16V to 300 V
KPM Contact Resistance Tester
Contact Resistance Tester (KPM CRT) outputs DC 600A currents to test the contact resistance of circuit breaker or high current cable contacts. It is designed as per IEC62271. It mainly measures the circuit breaker contact resistance. All the test results of the tester can be printed by the micro-printer, which is integrated in the tester. Also all the test results saved in the tester can be uploaded to the computer & then saved as MS WORD document.
KPM- CRT Series is available in below variants-:
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100A
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200A
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400A
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600A
CB analizer 01
(KPM CBA-01)
KPM Circuit Breaker Analyzer (KPM-CBA 01)is used for testing, analyzing and assessing power system circuit breakers, mechanical characteristics of load switches and isolated switches and other AC high voltage switches, Arcing contacts and vibration characteristics etc. The Circuit Breaker Analyzer cover all testing requirements of high voltage circuit breakers.
KPM Breaker Timer
(KPM CBT-01)
Features :
1. Test the electrical characteristics of various high-voltage circuit breakers.
2. Test the parameters of closing, opening, different periods, and bounce time of 6 contacts.
3. There are 6 contact status indicators on the panel, which is convenient for judging whether the closing or opening status or the wiring is correct.
4. Perform closing, opening, opening and closing, closing, opening and closing control.
Circuit Breaker Analyzer
(CRT 600 2G)
Features -
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It uses a high-brightness 7-inch color LCD screen with clear display , friendly human-machine interface , and is visible in sunlight.
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The whole machine is controlled by a high-speed chip , with a high degree of automation and simple operation.
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The maximum output current can reach 600A , with fast test speed and high measurement accuracy.
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Integrates "traditional resistance mode" and "intelligent test mode" to meet different application requirements.
Comparison - Circuit Breaker Testers
Theory - Circuit Breaker Testing
A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and interrupt current flow.
Circuit Breaker receives ‘Trip’ command from respective relays during fault conditions. The following parameters are often tested on a circuit breaker.
Common tests on Circuit Breakers
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Closing Time & Opening Time
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Motion Tests(as recommended in the IEC 1208)
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Damping
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Coil Currents
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Trip Voltage
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Static Contact Resistance of the main contacts
New methods for circuit breaker diagnostics
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Dynamic Contact Resistance
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Vibration Testing.
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Shape of Coil Current Curve
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Vacuum Bottle Integrity
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Capacitance & Tan Delta of Grading Capacitor
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Dew Point Measurement of SF6 gas/air
Measured values are compared with limit values specified by the manufacturer or values that have been arrived at by the maintenance organization through experience. In many cases a “fingerprint”, consisting of different measurements taken when a breaker is new, is compiled. This fingerprint can then be used as a reference for subsequent measurements. Any change that is found clearly indicates a change in the breaker’s condition.
