SMC LET-400-RD – Primary Injection Test equipment up to 2,500A with Timer & Ammeter

• Primary Injection Test equipment up to 2,500A with Timer And Ammeter
• Permanent current up to 400A 1KVA in 4 Ranges
• Built-in digital ammeter 0.5% accuracy
• Built-in digital timer resolution 1 ms
• Thermal and shortcircuit protection

It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.

The regulation system is based on a continuously variable autotransformer (Variac) that supplies to a power transformer that delivers the high current outputs and isolates the main supply from the load. A built-in ammeter and a timer gives the information about the current value and the operation time of the relay or breaker under test.

APPLICATIONS

• Test of the I/T curve in primary current relays test.
• Primary injection tests.
• Test of measurement and protection transformers.
• In general, primary injection tests include the complete loop, such as current transformer cables, protective relays, and circuit breakers.