DT904 is a CE certified Cat 3 digital RCD Tester designed for the professional, it tests for correct operation of RCDs (Residual Current Devices). A RCD) or a residual current circuit breaker (RCCB) commonly know as a safety switch is designed to isolate power when it detects an in-balance commonly of 30 mA (milliamps) between the active and neutral conductor. These in-balances are commonly caused by current leakage through earth. This leakage can be caused via a faulty appliance or through the body of a person accidentally touching an energized piece of equipment. RCD/RCCB’s are designed to disconnect power to the circuit when a difference of 30mA is detected. This disconnection or tripping of these breakers should happen without due delay, if the RCB/RCCB takes to long to trip the results could be fatal.
It is a requirement to test and check for the correct operation of RCD, and this meter is designed to do exactly that. This meter is fully programmable making it extremely easy to use and it will also test the latest delay action breakers as well as being able to check for correct wiring status very quickly
Trip current settings | 5mA, 10mA, 30mA, 100mA, 300mA, 500mA | |
Test Current (No Trip Test) | 50% of circuit breaker trip current selected | 2000mS ± 5% |
Test Current (Trip Test) | 100% of circuit breaker trip current selected | 2000mS ± 5% |
Test Current (Fast Trip Test) | 250mA regardless of circuit | 40mS ± 5% |
breaker trip current selected | ||
Fault trip Time | 2000mS (40mS for Fast Trip) | ±2%rdg ±3dgts |
Resistance | 0.1kΩ±1.0%rdg ±2dgts | |
Operating Voltage | 220V, 230V, 240V AC ± 10% | ± 3% |
What's In The Box
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Posted by Unknown on 7th Feb 2017
Perfect does exactly as described a quick and easy way to ensure my customers premises are electrically safe.
Posted by Unknown on 8th Dec 2016
THE PRO ELECTRICIANS RCD TESTER IS SIMPLE TO USE , COST EFFECTIVE AND DOES NOT TAKE UP MUCH SPACE IN THE TOOL BAG OTHER RCD TESTERS IN THE MARKET ARE BIG AND BULKY , COMPLICATED TO USE AND COST THOUSANDS OF DOLLARS .