Protector Trip Relays Ground Fault

This compact DIN-rail ground fault relay allows the fault current to be continuously monitored and compared with the user selectable trip level. Ideally suited for any type of electrical equipment, specifically switchboards, generator sets and transformers.

The 373-GFR is designed to detect dangerous ground fault currents before damage is caused to expensive power assets. An undetected fault current may lead to cables overheating, which could start a fire. If high fault currents are involved, hazardous voltages may also appear on grounded equipment, putting lives at risk. The 373-GFR ground fault relay allows the fault current to be continuously monitored and compared with the user selectable trip level. Should the fault exceed this level, the relay will trip to indicate a fault condition. With a very fast response time of under 40ms, the supply can be disconnected before serious damage can occur. This product is intended to provide a high degree of ground fault protection and monitoring for any type of electrical equipment, specifically switchboards, generator sets and transformers.

Features

• Precision digital settings
• LED bar graph display
• 10 selectable trip levels – 100 to 1200 amps
• 16 selectable time delay – 0ms to 10 seconds
• Less than 40ms response time
• 0-1mA analogue output
• User selectable input range of 0.2m ohms or 2m ohms
• User selectable latching/self-resetting
• Single-pole change over relay
• 8 amp 250V rated relay contacts

Benefits

• DIN-rail 43880 enclosure
• Switched mode supply accepts a wide range of auxiliary voltages
• Isolation of faulty circuits
• Insulation monitoring
• Advanced warning of faults
• Protection of expensive power assets
• Current transformer not required

Applications

• Switchgear
• Distribution systems
• Generator sets
• Control panels
• Utility power monitoring
• Transformer protection

Approvals

• cRUus Approved File Number E203000