Earth Fault Relay Dealers in Chennai

• Specialities: Stable Performance, Shocked Proof
• Size (Inches): 4-6 Inches
• Material: Aluminium
• Finishing: Polished
• Warranty: 6 Month
• Mounting Type: Base Mounting
• Number of Poles: 2
• Made in: India

• Phase: SINGLE
• Current (Amps): 0.5A TO 4A
• Voltage (V): 230V AC
• Application: FEEDER INCOMING PROTECTION
• Model: AVT-EFR-07
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• Brand Name: SANDS
• Country of Origin: INDIA

In order to implement a 100 % stator earth fault protection based on sub harmonic injection, a 20Hz voltage is injected into the generator star point. The 20-Hz generator SGEN-1001 is used in combination with the band pass filter SBPF-1001 in the Stator Earth fault protection. Injection can be performed by connecting the SGEN-1001 and the SBPF-1001 to the load resistor of an earthing or neutral transformer. If an earth fault occurs in the generator star point, the 20 Hz voltage drives a current through the fault resistance. From the driving voltage and the fault current, the protective relay determines the fault resistance.

Features Simple and reliable construction Micro-processor based numerical design User friendly Compact panel mounting case

Features:Simple and reliable construction,Micro-processor based numerical design ,User friendly,Compact panel mounting case. Application:Time - current graded over current and earth fault protection of distribution systems. Back-up protection for generators, transformers,transmission lines etc.

• Model AVT-EFR-07 :: 10% to 80%

SETTING RANGES : Current Delay Time : 0.3 to 3.0 sec Auxiliary Supply : 185-250 VAC APPLICATION Feeder incoming protection Outgoing protection Busbar protection

We are the main supplier of this product.

earth fault relays, Relays, Electromechanical Relays, Numerical Relays