Ground Fault Relays

Ground Fault Relays offered in the 373-GFR series allow 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.

Ground Fault Relays are 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.

The Crompton Instruments product range represents one of the largest product offerings of power measurement, control, and protection instrumentation, for switchgear and generator set manufacturers, panel builders and OEMs.

Crompton Instruments products offer proven reliability across a diverse array of industries including power generation, process control, test and measurement, utility, marine, defence and energy management applications. To meet the challenges of ever decreasing lead times and industry developments, design and manufacturing processes are constantly reviewed and updated.

By combining local knowledge with over 100 years of research, product development and manufacturing capabilities, Crompton Instruments products provide the highest standards of performance and user convenience

Features:

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

Benefits:

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

Applications:

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

Approvals:

• cRUus E203000