What overcurrent protection types does the GWPR100-I Digital Integrated Protection Relay support?

The GWPR100-I Digital Integrated Protection Relay provides a comprehensive phase overcurrent protection scheme, including: • Instantaneous Overcurrent Stage I (ANSI 50) • Definite-Time Overcurrent Stage II (ANSI 51P) • Definite-Time Overcurrent Stage III (ANSI 51) • Inverse-Time Overcurrent (ANSI 51) • Close-On-Fault Acceleration Protection (ANSI 50/51) • Overload Protection (ANSI 51) These protection types can be flexibly selected or combined based on site-specific load characteristics, meeting the full range of current protection requirements from feeder lines to distribution transformers.

What voltage levels and primary equipment are applicable to the GWPR100-I Digital Integrated Protection Relay?

The GWPR100-I Digital Integrated Protection Relay is applicable to medium and low voltage distribution systems up to 13.8 kV and 11 kV, covering primary equipment such as feeder cabinets, distribution transformers, shunt capacitor banks, bus tie breakers, and asynchronous motors. It also supports 400 V low-voltage distributed photovoltaic grid-connection protection, making it suitable for a wide range of application scenarios including industrial facilities, photovoltaic power stations, and substations.

What voltage protection functions does the GWPR100-I Digital Integrated Protection Relay support?

The GWPR100-I Digital Integrated Protection Relay provides comprehensive voltage and frequency abnormality protection, including: Overvoltage (ANSI 59) Undervoltage (ANSI 27) Zero-Sequence Overvoltage (ANSI 59N) Underfrequency Load Shedding (ANSI 81L) VT Disconnection Alarm (ANSI 60) These voltage protection functions effectively safeguard equipment against abnormal voltage conditions, ensuring reliable operation of distribution systems, motors, capacitor banks and photovoltaic grid-connected systems.

GWPR220-AF Feeder Arc Flash Protection Relay

Functions(ANSI) 50AF 50BF 50

Product Desc

The GWPR220-AF Feeder Arc Flash Protection Relay is a professional millisecond-level Internal Arc-fault Control Device (IACD) compliant with IEC and GB standards including IEC 60947-9-2, IEC 62271-200 and GB/T 14598.302. It is specially developed for arc fault protection in switchgear feeder compartments and cable chambers, suitable for 0.4kV～33kV distribution system feeder circuits.
The GWPR220-AF Feeder Arc Flash Relay adopts passive optical arc sensing and feeder CT secondary analog signal acquisition, achieving precise and selective fault isolation. It delivers a minimum 4ms tripping response, rapidly isolating faulty feeders before arc faults produce high temperature, shock waves and molten metal. This effectively protects switchgear and personnel, and ensures uninterrupted power supply for busbars and healthy feeders.
The GWPR220-AF Feeder Arc Flash Relay integrates comprehensive functions including feeder protection measurement, optical link monitoring, local HMI parameter configuration, fault recording, Modbus-RTU (RS-485) communication and relay output control, featuring excellent EMC immunity and insulation performance for harsh on-site operating conditions. It is a standard active arc protection solution for medium/low-voltage feeder cabinets and Motor Control Centers (MCC).

+8617621210051

+86-17621210051

Output Trip

Device Output Trip ≤4ms

Arc criterion

Single arc criterion ≤8ms

Arc criterion

Dual arc criterion ≤12ms

Arc Channel

4 optional

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

GWPR100-I Digital Protection Relay with Measurement, Control & Communication Functions

Technical Specifications

GWPR100-I Digital Integrated Protection Relay Technical Specifications

Structure and Mounting Dimensions

Mounting Type: Standard flush panel mounting. It can be installed singly on local 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.

GWPR100-I Digital Integrated Protection Relay – Dimensional Drawing

Typical Application Scenarios

Medium and low voltage distribution systems up to 13.8 kV / 11 kV: 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

Frequently Asked Questions (FAQ)

Q:What is the GWPR220-AF Feeder Arc Flash Protection Relay used for?

Q:What are the main features of the GWPR220-AF Feeder Arc Flash Protection Relay?

The GWPR220-AF Feeder Arc Flash Protection Relay is a professional millisecond-level Internal Arc-fault Control Device (IACD) compliant with IEC and GB standards including IEC 60947-9-2, IEC 62271-200 and GB/T 14598.302. It is specially developed for arc fault protection in switchgear feeder compartments and cable chambers, suitable for 0.4kV～33kV distribution system feeder circuits. The GWPR220-AF Feeder Arc Flash Relay adopts passive optical arc sensing and feeder CT secondary analog signal acquisition, achieving precise and selective fault isolation. It delivers a minimum 4ms tripping response, rapidly isolating faulty feeders before arc faults produce high temperature, shock waves and molten metal. This effectively protects switchgear and personnel, and ensures uninterrupted power supply for busbars and healthy feeders.

Q:How can I get a quotation or more information about the GWPR220-AF Feeder Arc Flash Protection Relay?

Contact the GoWatron sales team and provide your technical requirements, quantity and target market. Our engineers will recommend a suitable configuration and provide a formal quotation.