Protection Relays

Sycon Products

SYCON-7800 - Protection Relay - Earth Fault Relay

Sycon 7800

The earth fault is sensed by measuring the neutral current. Normally in three phase system the vector sum of three phase current are zero hence no current flows from neutral to earth. If ground fault occurs the vector sum is not zero. If we can sense the current from neutral to earth we will get the residual current which we can say as earth fault current. Sensing this current calibrated we can compare with the set point to detect the earth fault.

General Features

  • Solid state
  • Current Setting Range 10 % to 80 %
  • Low power consumption
  • Variable current and time setting
  • Ideal for compliance to I E rule 61-A

Display Features

  • Healthy & Fault Indication

Control Features

  • Site settable Current & Time
  • Reset Facility
  • Test Mode Facility

Electrical Specifications

Input Auxiliary Supply 230 VAC (110 VAC & 415 VAC optional)
Current Sensitivity Variable from 10 % to 80 % ,settable with DIP switches in three different models
Trip Time From 0.15 Seconds to 3.00 seconds settable with DIP switches
Relay Contacts Potential free NO-C-NC, 10Amps at 250 VAC contacts
Trip Indication LED

Mechanical Specifications

Dimensions 96(L) x 96(W) x 60(D) mm
Panel Cutout 91 mm X 91 mm

Wiring Diagram

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Contact

Systems & Controls (Sangli) Pvt. Ltd.

C-24, MIDC, Miraj 416410
Sangli, Maharashtra, India

Phone: +91 233 2644765 / 2644320
Fax: +91 233 2645053
E-mail: info@sycon.co.in