The Megger CB-360-DC and CB-120-DC DC Circuit Breaker Test Sets are mobile, high-current test sets designed specifically for testing dc circuit breakers. They incorporate a variable high-current dc output, control circuitry, instrumentation, and overload and short-circuit protection.
Applications
The Megger CB-360-DC and CB-120-DC DC Circuit Breaker Test Sets is designed to test low-voltage dc circuit breakers with dc current. The unit provides the capability of calibrating and functionally testing the time-delay characteristics of the electromechanical or thermal-magnetic trip devices on dc circuit breakers. This is accomplished by simulating an overload or fault condition on the circuit breaker.
Specifications
Input
Voltage: 460 V ± 5% For other voltages and frequencies, contact us.
Current: 100 A
Frequency: 60 Hz
Output
The output current is adjustable from zero up to the maximum available from the test set. The following output currents are available through typical modern circuit breakers that are directly connected to the test set using Multi-Amp stabs:
Megger CB-120-DC
Output Current |
Maximum Time On |
Minimum Time Off |
3,000 A |
15 min |
15 min |
9,000 A |
22 sec |
5 min |
15,000 A |
8 sec |
3 min |
24,000 A |
3 sec |
2.5 min |
Megger CB-360-DC
Output Current |
Maximum Time On |
Minimum Time Off |
3750 A |
15 min |
15 min |
10,000 A |
21 sec |
5 min |
20,000 A |
5 sec |
3 min |
30,000 A |
1 sec |
2.5 min |