DT-904 | CEM Instruments India

RCD (ELCB) Tester

Digital RCD (ELCB) Tester

DT-904

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.

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2000mS readout for testing latest delay action breakers
Fully programmed operation
Accurate digital read out of tripping time
Two LED lamps give quick check for correct wiring
Operates from mains supply. No need for batteries
Compact, lightweight and simple to operate
Zero cross circuitry permits testing at 0°and 180°portion of sine wave. At these two tests minimum (best) and maximum (worst) trip times will be displayed
Data hold function to freeze the digital trip time display allows for easy readout and eliminates the possibility of reading error
Confirms to EN61010-1, CAT-III 600V

Measuring Ranges

Trip Current Settings

5mA 10mA 30mA 100mA 300mA 500mA

Test current

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

Accuracy

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

Instruction manual
Carrying case
Battery

RCD (ELCB) Tester

Digital RCD (ELCB) Tester

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