Circuit Breaker Operation Time (Off-Service)

Timing measurements according to IEC 62271-100 are the most common tests on circuit breakers. These tests are used to determine operation time, pole discrepancy or pre-insertion resistor timing. The test uses a resistance or voltage threshold to measure the timing. Methods that allow tests to be performed with grounding on both sides are preferred because of the increased safety of the personnel performing the tests.

Expert recommends

CIBANO 500 + CB MC2

The safety of the test personnel can be increased when the test is performed with both sides of the breaker safely grounded. The offered solution also decreases interferences and reduces the weight of the required test equipment and minimizes handling effort.

CIBANO 500
3-in-1 test system for medium- and high-voltage circuit breakers
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CB MC2
Main contact module for CIBANO 500
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Benefits of this solution

Personnel safety

The safety of the test personnel can be increased when the test is performed with both sides of the breaker safely grounded.

Decreased interferences

The CB MC2 connection modules decrease interferences as they are mounted close to the breaking elements with short cables offering minimized cable length for interferences from other live substation elements.

Minimized handling effort

The offered solution reduces overall test equipment weight by eliminating the need for long and heavy high-current cables and their cumbersome handling.

Literature
PotM-02-2021 Medium Voltage Breaker Testing ENU (400 KB)
Interpreting the results of circuit breaker analysis (818 KB)
Optimized Testing - Maximum Efficiency (1 MB)
On-site Non-intrusive Testing of AC Circuit Breakers (410 KB)

Videos

State-of-the-art circuit breaker testing MV / HV

High-voltage circuit breaker testing with OMICRON's CIBANO 500 and CB MC2

Testing circuit breakers with OMICRON's CIBANO 500

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