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Toshiba GRD110 Manual

Gr series numerical relay
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  • Page 2 GRD110 FEATURES APPLICATION Overcurrent protection for phase and earth The GRD110 is a range of fully numeric multi-function faults with IDMTL or DTL. protection relays. GRD110 has five models which differ according to the number and type of current Three instantaneous elements with DTL.
  • Page 3 GRD110 Table 2 - GRD110 Features GRD110 - Model Number Phase Fault O/C (50/51P) Earth Fault O/C (50/51N) SEF (50/51N) Phase Undercurrent (37P) Thermal Overload (49) NPS Overcurrent (46) Broken Conductor Circuit Breaker Fail (50BF) Inrush current detector Cold Load Protection...

  • Page 4: Protection Functions

    The GRD110 issues a trip according to the ‘cold’ and ‘hot’ curves specified in IEC60255-8 All elements can be inhibited by binary input signals...

  • Page 5: Cold Load Protection

    Inrush Current Detector GRD110-500 and -520 provides an inrush current detector against magnetizing inrush currents during transformer energisation. The inrush current detector detects the ratio between second harmonic current and fundamental current.
  • Page 6 GRD110 Inverse Time Operate and Reset Curves IEEE/US Reset Curves IEEE/US Inverse Curves IEC/UK Inverse Curves (Time Multiplier TMS = 1) (Time Multiplier TMS = 1) (Time Muliplier TMS = 1) 1000.00 1000 100.00 10.00 1.00 Current (Multiple of Setting)
  • Page 7 GRD110 IEC60255-8 Thermal Characteristics Thermal Curves (Hot Curve - Thermal Curves (Cold Curve - no prior load) 90% prior load) 1000 1000 =100 =100 0.01 0.01 0.001 Overload Current (Multiple of k.I Overload Current (Multiple of k.I IEC60255-8 ‘Cold’ Curve IEC60255-8 ‘Hot’...

  • Page 8: Monitoring Functions

    This feature is not available in GRD110-110. which can be stored is dependent on the recording The operating time monitor records the time time chosen.

  • Page 9: User Interface

    Each of the programmable binary GRD110 can be connected to the RSM system via the outputs is driven via a logic gate which can be rear mounted serial communications port, using either programmed for OR gate or AND gate operation.
  • Page 10 GRD110 PC DISPLAY Setting Event record Metering Data analysis Fault record Figure 5 - Relay Setting and Monitoring System - PC Displays...

  • Page 11: Technical Data

    GRD110 TECHNICAL DATA Ratings AC current I 1A or 5A Frequency: 50Hz or 60Hz DC auxiliary supply: 110/125Vdc (Operative range: 88 - 150Vdc) 220/250Vdc (Operative range: 176 - 300Vdc) 48/54/60Vdc (Operative range: 38.4 - 72Vdc) Superimposed AC ripple on DC supply:...
  • Page 12 GRD110 Earth Fault Protection E/F 1 Overcurrent threshold: OFF, 0.02 – 5.00A in 0.01A steps (1A rating) OFF, 0.1 – 25.0A in 0.1A steps (5A rating) Delay type: DTL, IEC NI, IEC VI, IEC EI, UK LTI, IEEE MI, IEEE VI, IEEE EI, US CO8 I, US CO2 STI, user configurable IDMTL Time Multiplier Setting TMS: 0.010 - 1.500 in 0.001 steps...
  • Page 13 GRD110 Autoreclose ARC Reclaim Time 0.0 - 600.0s in 0.1s steps Close Pulse Width 0.01 - 10.00s in 0.01s steps Lock-out Recovery Time OFF, 0.1 - 600.0s in 0.1s steps Sequences 1 - 5 Shots to Lock-out, each trip programmable for inst or...

  • Page 14: Environmental Performance

    GRD110 ENVIRONMENTAL PERFORMANCE Test Standards Details Atmospheric Environment Temperature IEC60068-2-1/2 Operating range: -10 C to +55 C. Storage / Transit: -25 C to +70 C. Humidity IEC60068-2-78 56 days at 40 C and 93% relative humidity. Enclosure Protection IEC60529 IP51 (Rear: IP20)

  • Page 15: Overcurrent Relay

    GRD110 ORDERING Overcurrent Relay GRD110 Type: Overcurrent Relay GRD110 Model: -Model 110: Earth fault and sensitive earth fault -Model 400: Three phase and earth fault -Model 420: Three phase, earth and sensitive earth fault -Model 500: Three phase and earth fault with auto-...
  • Page 16 RELAY FAIL. DD FAIL. TB3-A2 COM1-A TB2- A9 +5Vdc DC-DC SUPPLY COM1-B RS485 I/F for RSM, IEC60870-5-103 COM1-0V FRAME EARTH CASE EARTH TB4-A2 COM2-A COM2-B RS485 I/F for IEC60870-5-103 (Dual RS485 model only) COM2-0V Figure 6 - GRD110-110 Typical Application Diagram...
  • Page 17 DD FAIL. TB2- A9 TB3-A2 +5Vdc COM1-A DC-DC SUPPLY COM1-B RS485 I/F for RSM, IEC60870-5-103 COM1-0V FRAME EARTH CASE EARTH TB4-A2 COM2-A COM2-B RS485 I/F for IEC60870-5-103 (Dual RS485 model only) COM2-0V Figure 7 - GRD110-400, 500 Typical Application Diagram...
  • Page 18 DD FAIL. TB3-A2 TB2- A9 COM1-A +5Vdc DC-DC SUPPLY COM1-B RS485 I/F for RSM, IEC60870-5-103 COM1-0V FRAME EARTH CASE EARTH TB4-A2 COM2-A COM2-B RS485 I/F for IEC60870-5-103 (Dual RS485 model only) COM2-0V Figure 8 - GRD110-420, 520 Typical Application Diagram...
  • Page 19 15.6 185.2 Side view Front view 4 holes- 5.5 4 holes- 4.5 Rear view Panel cut-out TB1,TB2,TB3: Screw terminal (M3.5 Ring) TB4: Screw terminal TB4 is provided only for dual RS485 model. Terminal block Figure 9 - GRD110 Outline Diagram...
  • Page 20 Power Systems Company 1-1,SHIBAURA 1-CHOME,MINATO-KU, TOKYO 105-8001,JAPAN PHONE;+81-3-3457-3644 FAX;+81-3-5444-9168 http://www.toshiba-relays.com...

This manual is also suitable for:

Grd110-110Grd110-400Grd110-420Grd110-500Grd110-520

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