GWPR100-I Digital Integrated Protection Relay
Product Desc
- The GWPR100-I digital integrated protection relay is independently developed by GoWatron. It adopts a 32-bit embedded microprocessor architecture that integrates protection, measurement, control and communication functions into one single unit. The device is especially suitable for protection applications in ring main units and package substations. It applies to medium and low voltage distribution systems with rated voltages up to 11 kV and 13.8 kV, covering feeders, distribution transformers, shunt capacitor banks, bus tie breakers and asynchronous motors.
- This relay complies with IEC and GB EMC standards. It supports cyclic storage of 128 fault event logs and 8 groups of non-volatile setting groups, and is equipped with a Chinese LCD human-machine interface. Two installation modes are available: decentralized mounting on local switchgear panels and centralized rack mounting in control rooms, making it suitable for complex operating conditions of industrial plants, photovoltaic power stations and substations.
High precision
≤0.5%
Quick response
≤100ms
ReliableProtection
multi-protection
Quality Assurance
ISO 9001 Certified
Technical Support
24/7 Expert Support
Fast Delivery
Global Shipping
Warranty
2 Year Warranty
Protection Functions
Phase Overcurrent Protection
- (ANSI 50) Instantaneous Overcurrent Stage I
- (ANSI 51P) Definite-Time Overcurrent Stage II
- (ANSI 51) Definite-Time Overcurrent Stage III
- (ANSI 51) Inverse-Time Overcurrent
- (ANSI 50/51) Close-On-Fault Acceleration Protection
- (ANSI 51) Overload Protection
Asynchronous Motor-Specific Protection
- (ANSI 48) Motor Start Blocking
- Earth Zero-Sequence Protection
- (ANSI 51N) Definite-Time Zero-Sequence Overcurrent
- (ANSI 51N) Inverse-Time Zero-Sequence Overcurrent
Autoreclosing
- (ANSI 79) Line Autoreclosing
Voltage/Frequency Abnormal Condition Protection
- (ANSI 59) Overvoltage
- (ANSI 27) Undervoltage
- (ANSI 59N) Zero-Sequence Overvoltage
- (ANSI 81L) Underfrequency Load Shedding
- (ANSI 60) VT Disconnection Alarm
- Shunt Capacitor Bank Dedicated Protection
- (ANSI 60) Capacitor Unbalance Overvoltage
- (ANSI 46) Capacitor Unbalance Overcurrent
- (ANSI 50) Capacitor Switching Inrush Protection
Unbalanced Fault Protection
- (ANSI 46) Negative-Sequence Overcurrent
Secondary Circuit Supervision
- (ANSI 74) Circuit Breaker Control Circuit Supervision
- (ANSI 27/59) System Loss-of-Voltage Protection
Non-Electrical Quantity Protection
- (ANSI 63) Transformer Cabinet Door Interlock
- (ANSI 63) Buchholz Trip Protection (Heavy Gas)
- (ANSI 63) Buchholz Alarm (Light Gas)
- (ANSI 63) Winding Overtemperature Trip
- (ANSI 63) Equipment Overheating Warning
- (ANSI 95) Remote Load Shedding Trip
Other Functions of the Product
Technical Specifications
Structure and Mounting Dimensions
- Mounting Type: Standard flush panel mounting. It can be installed singly on local switchgear or assembled in multiple units inside centralized control racks.
- Rear Board Dual-Module Plug Design:
- Plug A: Analog quantity acquisition circuit, RS485 communication circuit
- Plug C: Relay auxiliary power supply, 10-channel digital inputs, 4 groups of relay output contacts
- Grounding Requirement: The rear grounding terminal must be reliably connected to ground via copper conductors with a cross-sectional area of no less than 4 mm².
Typical Application Scenarios
- Medium and low voltage distribution systems up to 13.8 kV / 11 kV: Protection relay for feeders, distribution transformers, shunt capacitor banks and bus tie breakers
- Medium and low voltage asynchronous motor loops: Integrated protection relay for 0.4 kV / 6 kV / 11 kV / 13.8 kV motors, covering start-up, overload, unbalance and overtemperature fault protection
- Distributed photovoltaic grid connection points: Backup protection relay for 13.8 kV / 11 kV / 400 V PV grid-tied sides, monitoring overcurrent, over/undervoltage and earth faults
- Industrial plant power distribution rooms: Local protection relay for switchgears in chemical, manufacturing, data center and industrial park projects
- Small substations, outdoor prefabricated substations and switching stations: Specialized integrated protection relay for outdoor environments with wide temperature range and high electromagnetic interference
