Schweitzer Engineering Laboratories SEL-300G Manual
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Schweitzer Engineering Laboratories SEL-300G Manual

Generator relay
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SEL-300G Generator Relay
The SEL-300G Generator Relay is a comprehensive, multifunction relay intended for primary and/or backup
protection for any size synchronous machine.
Features
Protection
➤
100% Stator Ground
➤
Field Ground (with SEL-2664 Field Ground
Module)
➤
Phase (optional) or Ground Differential
➤
Volts/Hertz
➤
Reverse or Low Forward Power
➤
Backup Overcurrent Protection
➤
Negative-Sequence Overcurrent
➤
Loss-of-Field
➤
Six Levels of Over- or Underfrequency, Plus Time
Accumulators
➤
Over- and Undervoltage
➤
Inadvertent Energization
➤
Loss-of-Potential
➤
Synchronism Check (optional)
➤
Out-of-Step (single or dual blinder schemes)
➤
Compatibility With SEL-2600 Series RTD Module
(optional)
Monitoring and Metering
➤
Full Event Reports, Sequential Events Recorder
(SER), and Unsolicited Fast SER Messages
➤
Breaker Monitor and Battery Monitor
➤
High-Accuracy Metering
Communications
➤
ASCII, Binary, and Modbus Communications on
EIA-232 and/or EIA-485 Ports
➤
Unsolicited Fast SER Protocol
➤
IRIG-B Time Code Input
Schweitzer Engineering Laboratories, Inc.
Control
®
➤
Advanced SEL
OGIC
Traditional or Custom Logic Implementation
Relay and Logic Settings Software
Support
➤
SEL
QuickSet
AC
ERATOR
Support for Ease of Relay Settings and Logic Pro-
gramming
Applications
The SEL-300G can be applied in primary or backup
applications for complete generator or unit protection.
SEL-300G0
Unit Backup
Figure 1 Typical Application
Control Equations for
®
SEL-5030 Software
or Ð
SEL-300G3
Unit Protection
Plus Synchronism
Check
SEL-300G Data Sheet

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Summary of Contents for Schweitzer Engineering Laboratories SEL-300G

  • Page 1 SEL-300G Generator Relay The SEL-300G Generator Relay is a comprehensive, multifunction relay intended for primary and/or backup protection for any size synchronous machine. Features Protection Control ® ➤ ➤ 100% Stator Ground Advanced SEL Control Equations for OGIC ➤ Traditional or Custom Logic Implementation...

  • Page 2: Functional Overview

    CTs for both input sets. Optional Synchronism Checking User-programmable second-harmonic blocking detects You can order the SEL-300G Relay with a built-in syn- transformer inrush when the differential zone includes chronism-checking function. The synchronism-check the generator step-up transformer. The dual-slope per-...
  • Page 3 The SEL-300G, with the SEL-2664 Field Ground Mod- ule, detects field ground faults by measuring field insula- The SEL-300G offers you the choice of four methods for tion-to-ground resistance using the switched dc voltage performing system backup protection. Phase mho dis- injection method.
  • Page 4 Breaker Wear Monitor steady-state plus transient error is less than 0.01 Hz. Breakers experience mechanical and electrical wear The SEL-300G tracks the total time-of-operation in as every time they operate. Breaker manufacturers publish many as six off-nominal frequency bands. If the off-nom-...

  • Page 5: Additional Features

    Selectable setting groups make the power, frequency, substation battery voltage, and energy SEL-300G ideal for adapting the protection to changing (including demand), along with maximum and minimum system conditions. logging of selected quantities.
  • Page 6 Contact Inputs and Outputs protective elements and/or logic outputs assert. Imple- ment complete protective schemes by using a minimum The SEL-300G provides six optoisolated contact inputs of wiring and panel space. Programmable contact closure and eight output contacts. The contact inputs are assign-...
  • Page 7 Expression Builder, a rules-based editor. ➤ Analyze power system events from an SEL-300G Note: Using QuickSet in SEL-300G relays requires relay with integrated waveform and harmonic analysis firmware version R240 or later or R320 or later. tools.

  • Page 8: Hardware Overview

    (REAR) PORT 3 EIA-232 (REAR) IA87 PORT F IB87 EIA-232 (FRONT) IC87 POWER FRONT-PANEL TARGET LEDS — SUPPLY TRIP CLOSED BATTERY MONITOR 27/59 CHASSIS GROUND Figure 4 SEL-300G30H Inputs, Outputs, and Target Diagram SEL-300G Data Sheet Schweitzer Engineering Laboratories, Inc.

  • Page 9: Wiring Diagrams

    Wiring Diagrams Generator Phase-Input 87-Input Current Transformers Current Transformers Figure 5 SEL-300G Relay Typical AC Current and Four-Wire Wye Voltage Connection Generator Phase-Input 87-Input Current Transformers Current Transformers Figure 6 SEL-300G Typical AC Current and Open-Delta Voltage Connections Schweitzer Engineering Laboratories, Inc.
  • Page 10 TRIP4 Generator Lockout Relay OUT105 CLOSE Main Breaker Close Coil OUT106 60LOP Annunciator OUT107 ELEMENT Abnormal ALARMS Operation Annunciator ALARM SELF-TEST ALARM Relay Alarm Annunciator Figure 7 SEL-300G Typical Minimum DC External Connections SEL-300G Data Sheet Schweitzer Engineering Laboratories, Inc.

  • Page 11: Front-Panel Drawings

    Front-Panel Drawings 2U Rack-Mount Front Panel 2U Panel-Mount Front Panel 3U Panel-Mount Front Panel Figure 8 SEL-300G Front-Panel Drawings Schweitzer Engineering Laboratories, Inc. SEL-300G Data Sheet...

  • Page 12: Rear-Panel Drawings

    Rear-Panel Drawings 2U Rear Panel, Terminal Block 3U Rear Panel, Terminal Block 3U Rear Panel, Plug-In Connectors Figure 9 SEL-300G Rear-Panel Drawings SEL-300G Data Sheet Schweitzer Engineering Laboratories, Inc.

  • Page 13: Relay Dimensions

    Relay Dimensions Figure 10 SEL-300G Dimensions for Rack- and Panel-Mount Models Schweitzer Engineering Laboratories, Inc. SEL-300G Data Sheet...

  • Page 14: Specifications

    0.80 VA @ 300 V 125 Vdc: Pickup: 105–150 Vdc Dropout: 75 Vdc Power Supply 110 Vdc: Pickup: 88–132 Vdc 125/250 Vdc or Vac Dropout: 66 Vdc Range: 85–350 Vdc or 85–264 Vac Burden: <25 W SEL-300G Data Sheet Schweitzer Engineering Laboratories, Inc.
  • Page 15 [EN 60255-21-3:1995], Class 2 RTD elements once in two seconds. 1 MHz Burst Disturbance: IEC 60255-22-1:1988, Class 3 (2500 V common and differential mode) Emissions: IEC 60255-25:2000 Schweitzer Engineering Laboratories, Inc. SEL-300G Data Sheet...
  • Page 16 –1.00 Hz to +1.00 Hz 1.05 multiples of pickup Steady-State Slip Accuracy: ±0.02 Hz Close Acceptance Angle 1, 2: 0–80° Target Close Angle: –15 to +15° Breaker Close Delay: 0.000–1.000 s Close Failure Angle: 3–120° SEL-300G Data Sheet Schweitzer Engineering Laboratories, Inc.
  • Page 17 0.00–3000.00 s Outer Resistance Blinder: 1.0–500.0 ohms Note: Desired time delay may be added using SEL control equation OGIC timers. Inner Resistance Blinder: 0.5–250.0 ohms Steady-State Impedance Accuracy: ±0.5 ohm, ±5% of diameter Schweitzer Engineering Laboratories, Inc. SEL-300G Data Sheet...
  • Page 18 Station Battery Voltage Monitor Pickup Time: 25 ms at 60 Hz (Max) Pickup Ranges: 20–300 Vdc Time Delays: 0.00–400.00 s Measuring Accuracy: ±2 V, ±2% Maximum Definite-Time Delay Accuracy: ±0.1%, ±4.2 ms at 60Hz SEL-300G Data Sheet Schweitzer Engineering Laboratories, Inc.
  • Page 19 Metering accuracy calculation example for currents I , and I because of preceding stated temperature coefficient: For temperature of 40°C, the additional error for currents I , and [(0.0002%)/(°C) ] • (40°C –20°C) = 0.08% Schweitzer Engineering Laboratories, Inc. SEL-300G Data Sheet...

  • Page 20: Technical Support

    SEL products appearing in this document may be covered by U.S. and Foreign selinc.com • info@selinc.com patents. Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and international copyright and patent laws in its products, including without lim- itation software, firmware, and documentation.

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