Digital Grid Monitoring Protection Relays

ONE-STOP CUSTOM SOLUTIONS FOR GRID MONITORING RELAYS

For utility grids, power plants, solar PV, wind farms, and other distributed energy resources.

Multi-function grid monitoring: voltage/frequency/RoCoF/loss-of-mains detection

Multi-protocol communication: IEC 61850 , IEC103, IEC104, Modbus, and DNP3.

Compliant with IEEE 1547. Compatible with systems up to 230kV.

Free Selection Guide & Customized OEM/ODM Quotations.

GoWatron is engaged in the R&D, manufacturing and sales of protection relays for voltage levels up to 230 kV.

Power Protection Relays

Products Related To Grid Monitoring Relays

GWPR200-RP Reverse Power Protection Relay

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The GoWatron GWPR200-RP Reverse Power Protection Relay is primarily designed for grid-connected photovoltaic systems. It provides protection tripping in response to reverse power and automatic closing when forward power is restored. The relay supports four reverse-power trip outputs and four closing-command outputs. It supports both local installation in switchgear and centralised installation in a protection panel. Integrating protection, measurement, control, communication and event recording functions with comprehensive self-supervision, the GWPR200-RP is a dedicated protection relay for distributed PV grid-connection applications.

The relay is equipped as standard with an RS-485 interface supporting Modbus RTU.
Optional dual Ethernet ports support IEC 60870-5-103 over Ethernet.
Supported time-synchronisation methods include message-based time synchronisation, SNTP network time synchronisation and IRIG-B.

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GWPR300‑FS Fault Separation Relay

The GoWatron GWPR300‑FS Fault Separation Relay is designed for fault separation on the load‑side or small‑generation‑side applications for 132 kV, 33 kV and 10 kV (or 11 kV) voltage levels. It is widely deployed in hydropower plants, thermal power plants and gas‑fired power plants. Upon occurrence of faults such as over‑/under‑frequency and over‑/under‑voltage, the relay trips the generator circuit breaker to isolate the local plant from the utility grid and reliably disconnects faulty power sources, maintaining safe and stable operation of the power system.
Dual Ethernet ports supporting IEC 60870‑5‑104/103; IEC 61850 available as option;
RS485 interface for Modbus‑RTU. Supports IRIG‑B, SNTP and message‑based time‑sync modes.

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GWPR200-AIP Anti-Islanding Protection Relay

GWPR200-AIP Anti-Islanding Protection Relay is designed for distributed photovoltaic power projects at 11kV and 22kV voltage levels. It is a digital protection relay specially developed to prevent islanding conditions.This relay can be used with the GWPR200-FL Grid Fault Disconnection Relay and GWPR200-D Power Quality Online Monitor to form a grid-connected protection panel, or flush-mounted on the panel of the PV grid-connected cabinet.

Communication Interfaces:

2 Ethernet ports (supporting IEC 60870-5-103; optional)
1 RS485 communication port (supporting Modbus-RTU protocol)
Time synchronization via communication message, SNTP, and IRIG-B

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