SUPPLY,RETROFITTING,TESTING OF NUMERICAL RELAY

Supply of multiapplication based numerical relays with following features: Protection Parameters: •50/51 Overcurrent•50N/51N Earth Fault•49 Thermal Overload•48 Locked Rotor/Motor Start-up supervision•46 Negative Sequence•46PD,46M,49 F/T/C,49M,64R(High Impedance & Low Impedance),25,81U,81O,df/dt,32P/Q,32U,55U,55ITHD,60 P/N,59NU,37,50 L/R,79,95•Switch-on-to fault protection•27 Under Voltage•59 Over Voltage•66 Starts per hour•47 Phase Sequence / Voltage Unbalance•81U / 81O Under / Over Frequency•67 Directional Overcurrent•67N Directional Earth Fault•50BF Breaker Failure•74TC Trip Circuit Supervision•86 Master Trip/Lockout•94 Tripping Relay •46 Unbalance Current•60 VT Fuse Fail•Inrush Blocking•Harmonic Monitoring Metering Parameters •Phase Current Ia, Ib, Ic •Neutral Current In • Voltage L-L / L-N •kW, kVA, kVAR • PF •Frequency •Energy kWh / kVARh Event Recording •Fault records •SOE logs • Disturbance recorder •Waveform capture Communication •IEC 61850 •Modbus RTU/TCP •DNP3 •Ethernet / RS485• One front RJ45 port, three rear RJ 45 port for IEC-61850 protocol,Draw out type with C.T shorting feature,Graphical LCD Display. DI/DO •16DI+10DO

Retrofitting of relays in LV & HV switchboard Scope of work: • Removal of existing relay and associated wiring • Retrofitting, Testing & Commissioning of supplied relays. • Supply of Single core wire for panel wiring if required, minor hardware such as screws, washers, lugs, ferules, adaptor plate,terminal blocks etc. • Panel cut-out modification if required & if necessary new panel door to be supplied. • The relay setting will be done at our site as a part of commissioning. • All the relays to be tested at factory automatic test bench before dispatch. However, we shall test the relays at site using three phase secondary Relay Testing Kit (Omicron/ Equivalent)

GST@18%