18KG Primary Current Injection Test Set 0-200A With CT Ratio Test And Timer

TEST-200 200A PRIMARY CURRENT INJECTION TEST SET FOR CURRENT TRANSFORMER ratio test

200A PRIMARY CURRENT INJECTION TEST SET FOR CURRENT TRANSFORMER

TEST-200 200A primary current injection test set adopts ARM Chip to control its output process and large capacity of toroidal transformers. It is equipped with LCD display and current meter; it can show primary current value, second current value, turn ratio and the action time. Packing is used as aluminum alloy body with PC panel. TEST-200 is mainly applied to CT turn ratio testing in the power system and contact resistance test which need large current.

The primary current injection method is usually the preferred test method because it includes the current sensors, wiring, and the current conduction path in the circuit breaker with the test. However, this method has one disadvantage in that it will not always detect sensor wiring and polarity problems.

If performing three-phase primary injection is not feasible, the sensors and wiring of the circuit breaker should be tested separately to verify that they are working correctly. The proper functioning of the trip unit can be tested using primary current injection, one phase at a time. Two adjacent phases may also be connected in series and tested as three pairs to check for current sensor polarity issues.
Because primary current injection testing is a relatively expensive service, it's usually performed only during the commissioning (start-up) process to supplement a program of periodic secondary-current testing. Circuit breakers that are part of a critical process or engineered safety system are often maintenance tested using primary injection due to their high reliability requirements.
Primary current injection test set for low voltage power circuit breakers​

PARAMETERS

SELECTION GUIDE