For the last 30 years schneider has offered solutions in the area of people s safety for the most complex of applications.
Dc earth leakage relay schneider.
The one piece solid core design allows for installation over wires feeding loads to about fifty amps.
Dc earth leakage relay schneider.
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Dc earth leakage relays offered by us works on the principle of sensing the leakage current through resistor bridge.
It senses the dc earth leakage current for any equipment like switch boards rectifiers and battery chargers by sensing resistance between positive negative terminals of dc system earth.
The output relay will change state at factory setpoint between 5 and 50 ma of dc current to earth.
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Ground fault protection rh10 rh21 rh99 with manual reset earth leakage alarming same models plus rh99 with automatic reset ground fault protection in protection applications the relays control the interruption of the supply.
February 19 2019 hilman rojak leave a comment on dc earth leakage relay schneider.
The vigirex earth leakage protectors are equipped with extended range of compatible sensors of up to 3200 a that can detect current leakages to protect people and animals from having direct or indirect contact with stray voltages and therefore prevent them from getting an electric shock.
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They also protect equipment from fire explosion hazards.
Vigirex relays measure the earth leakage current in an electrical installation via their associated sensors.
When a leakage current above the trip level say greater than 30ma or 300ma is operating at a high frequency the conventional type a earth leakage relay will not see the leakage current so there is a threat of fire.
Dg series dc ground fault relay dg series ground fault sensors keep machinery and their operators safe from accidental shocks.
The anti fibrillation filter sees the high frequency and the current and will trip the type b relay to reduce the risk of fire damage to pant and machniery and the risk to life.
The relays can be used in the following ways.
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