The DT-904 is the Basic test Equipment an Electrician cannot do without. DT-904 is a Dual Function Test Instrument utilized to Verify electrical Wiring Connections and the Functioning of Earth leakage / Residual current detectors devices by forcing the ELCB/RCD to trip.
This verifies that the protection device open the mains power supply circuit when a current higher than a certain amplitude circulate into the ground/earth wire. This ensures the Electrical installation meet safety and regulation requirements.
|Trip Current Settings||5mA 10mA 30mA 100mA 300mA 500mA|
|No Trip Test||50% of circuit breaker trip current selected|
|Trip Test||100% of circuit breaker trip current selected|
|Fast Trip Test||250mA regardless of circuit breaker trip current selected|
|Fault Trip Time||2000ms (40ms for Fast Trip)|
|Operational Voltage||220V, 230V, 240V AC±10% 50/60Hz|
|Test Current||±3% at 220V 230V 240V AC|
|Test Current Duration||2000mS±5% for Trip and NO Trip Tests|
|(limiter incorporated)||40ms±5% for Fast Trip Test|
|Trip Time (Measurement Accuracy)||±2% reading ±3 digit|