Opened Service Neutral Protection Device is an electrical safety protection device against opened service Neutral or PEN. It can be combined with a circuit breaker. In MEN earthing system, when the service neutral or PEN has opened circuit, the earth stick and the water pipe bonding will act as a neutral to complete the electricity current cycle which is life - threatening. This device can help to prevent accident happening.

摘要

#$%^&*AU2017100896A420170810.pdf#####ABSTRACT Opened Service Neutral Protection Device is an electrical safety protection device that prevents potential electrocution from opened Service Neutral and opened PEN the device comprises: a current detection tunnel means through the device for the incoming Neutral to go through to connect to a Neutral Link, screw terminals means for incoming and outgoing Active conductor(s), a switch means to be able to manually turn the device on and off, a test button means for simulating a fault current for testing, a neutral connection means to connect to Neutral Link to assist the means of providing power to an switch triggering circuit means to trigger the on/off switch when opened Service Neutral is detected.PEN Active n in When IA 7/ 30mA & IN 30mA ECD cuts off within 0.3 second IN IA MCB as Main Switch PEN Active In In A ON ECD Opened Service Neutral Protection Device OFF N A ECD Opened Service Neutral Neutral Link Protection Device MEN Earth Link C 2 Water Pipe Bonding Main Earth Final sub circuit Test button Neutral Link MEN Earth Link Water Pipe Bonding Main Earth Title ECD-32A-6K-30mA-1P Author Jia Qi XU File Document