GWPR200‑C Capacitor Protection Relay
Product Desc
The GWPR200‑C Capacitor Protection Relay is an integrated protection, measurement and control device developed by GoWatron, specifically designed for shunt capacitor banks in 11 kV, 33 kV ungrounded and low‑resistance earthed power systems. The device integrates protection, measurement, control, communication and event recording functions into a single compact unit. It supports both rack‑mounted installation in central panels and direct local installation in switchgears. With high hardware integration, a user‑friendly human‑machine interface and reliable operational performance, it fully meets the requirements for comprehensive capacitor protection and automation integration in domestic and international power distribution systems.
- Equipped with 2 Ethernet ports (optional, supporting IEC 61850‑103 protocol);
- 1 RS485 interface (Modbus‑RTU);
- Supports multiple time‑synchronization modes: IRIG‑B, SNTP and communication message time synchronization.
Accuracy
≤ 0.2%
Quick Response
≤ 100ms
Reliable Protection
Comprehensive Protection
Quality Assurance
ISO 9001 Certified
Technical Support
24/7 Expert Support
Fast Delivery
Global Shipping
Warranty
2-Year Warranty
Product Description
- The GWPR200‑C Capacitor Protection Relay adopts a high‑performance 32‑bit microcontroller plus DSP computing architecture. It is equipped with a large‑size graphical LCD display supporting Chinese and English, capable of real‑time displaying all electrical quantities including voltage, current, power and frequency, and fully reproducing the entire process of protection operations. Independent configurable relay outputs and a built‑in complete control circuit enable direct circuit‑breaker opening and closing operations.
- The device features comprehensive self‑diagnostic functions and large‑capacity event and fault waveform recording. It adopts a modular hardware design with clearly defined AC analog board, PWR power board, DO output board and DI digital input board, complying with multiple international industrial standards. With strong EMC immunity and a wide operating temperature range, it adapts to various complex site conditions in substations and distribution rooms worldwide.
Product Functions
Protection Functions
- (ANSI 50/51) Three‑stage definite‑time overcurrent protection (Trip)
- (ANSI 51) Inverse‑time overcurrent protection (Trip)
- (ANSI 49 Thermal) Overload protection (Alarm / Trip selectable)
- (ANSI 51N) Zero‑sequence overcurrent Stage I protection (Trip)
- (ANSI 51N) Zero‑sequence overcurrent Stage II protection (Alarm / Trip selectable)
- (ANSI 46) Unbalanced overcurrent protection (negative‑sequence overcurrent) (Alarm / Trip selectable)
- Negative‑sequence overvoltage protection (Alarm / Trip selectable, manufacturer‑implemented function)
- (ANSI 59) Overvoltage protection (Trip)
- (ANSI 27) Undervoltage protection (Alarm / Trip selectable, with PT‑failure blocking and current‑blocking logics)
- (ANSI 60‑FL) PT fuse‑failure detection (Alarm, manufacturer‑extended element)
- (ANSI 74) Control‑circuit breakage detection (Alarm)
- (ANSI 49) Over‑temperature protection (Trip)
- (ANSI 49) Temperature rise alarm (Alarm)
- Two configurable non‑electric input protections (Alarm / Trip selectable, with no standard ANSI code assigned)
Measurement & Control Functions
- Complete acquisition of 3‑phase voltage, current, unbalanced quantity and zero‑sequence quantity; measurement of active power, reactive power, power factor and frequency; four‑quadrant energy metering; 14‑channel digital status input acquisition; 8‑channel programmable relay outputs; local and remote opening & closing control for circuit‑breakers.
Event & Fault Recording Functions
- 128 records each for protection events, alarm events, status change events and operation logs; 16 self‑diagnostic event records. Up to 32 fault oscillography records storing full pre‑fault and post‑fault waveforms for convenient fault analysis.
Commissioning & Maintenance Functions
- Multi‑setting‑group management supporting setting copy and group switching; local output test, communication test and event simulation; full device information query; fault information displayed directly on the local LCD screen.
Application Scenarios
- Protection, measurement and control for shunt capacitor banks in 11 kV, 33 kV substations;
- Reactive‑power compensation capacitor cubicles for industrial & mining distribution rooms and park power distribution facilities;
- Capacitor bank protection for ungrounded and low‑resistance earthed power systems;
- Local decentralized installation in switchgears or centralized panel‑rack mounting;
- Domestic and international distribution projects requiring distribution automation access with remote telemetry, telesignalisation, remote control and protection signal uploading.
