The Promoda Feeder Protection Control & Relay Panel (CRP) is designed to provide reliable protection, control, and monitoring for medium voltage feeder circuits in industrial power systems and utility distribution networks. The panel integrates advanced numerical relays with dedicated control and supervision functions to ensure secure operation of electrical feeders supplying power to downstream loads.
Electrical feeders are critical components of power distribution systems, carrying power from substations to industrial equipment, transformers, and distribution networks. The feeder protection CRP panel continuously monitors system parameters and responds quickly to abnormal conditions such as overcurrent faults, earth faults, or feeder overload conditions.
The panel architecture follows a functional segregation design, dividing protection, control, annunciation, and metering functions into separate sections for improved clarity and operational reliability. This arrangement ensures that protection relays operate independently while control and monitoring circuits remain easily accessible for maintenance.
Protection functions implemented within the panel include overcurrent protection (50/51) and earth fault protection (50N/51N), which are commonly used in medium voltage feeder systems. These functions provide rapid fault detection and isolation, preventing equipment damage and maintaining system stability.
The feeder protection panel is built using a floor-mounted sheet steel enclosure with front access for operation and rear access for wiring. Numerical relays provide event logging and disturbance recording capabilities, allowing operators to analyze electrical faults and improve system reliability.
Designed for integration with medium voltage switchgear panels operating from 3.3 kV to 33 kV, the Promoda Feeder Protection CRP panel is widely used in industrial substations, distribution networks, and infrastructure power systems.
Key Highlights
Dedicated Feeder Circuit Protection
Ensures reliable protection of medium voltage power distribution feeders.
Numerical Relay Technology
Advanced relays provide accurate fault detection and system monitoring.
Fast Fault Isolation
Overcurrent and earth fault protection quickly isolates faulty feeder circuits.
Functional Panel Segregation
Separate sections for protection, control, annunciation, and metering.
Event and Fault Recording
Numerical relays capture system disturbances for analysis.
Compatible with MV Switchgear Systems
Designed for integration with medium voltage distribution switchgear panels.
Panel Architecture
The control and relay panel is divided into dedicated functional sections to improve operational safety and maintenance accessibility.
- Protection Section
Contains numerical relays responsible for feeder protection. - Control and Supervision Section
Includes breaker control switches, status indicators, and supervisory circuitry. - Annunciation Section
Displays alarms and feeder fault conditions. - Metering Section
Provides monitoring of electrical parameters.
Major Components
- Numerical Protection Relay
Provides overcurrent and earth fault protection. - Trip Circuit Supervision Module
Ensures reliable breaker trip operation. - Control Switches and Indicators
Provide operator control and visual status indication. - Annunciation System
Displays system alarms and faults. - Terminal Blocks
Used for wiring and external connections.
| Parameter | Specification |
|---|---|
| Panel Type | Feeder Protection Control & Relay Panel |
| Protection Functions | Overcurrent (50/51), Earth Fault (50N/51N) |
| Relay Type | Numerical Protection Relay |
| Control Supply | 110V / 220V DC |
| Panel Construction | Floor mounted sheet steel enclosure |
| Access | Front operation, rear wiring access |
| Functional Sections | Protection, Control, Annunciation, Metering |
| Trip Circuit Supervision | Available |
| Panel Height | Approx. 2200 mm |
| Wiring | FRLS copper control wiring |
| Degree of Protection | IP42 / IP54 |
| Standards | IEC compliant protection system |
Feeder Protection Reliability
- Continuous monitoring of feeder electrical parameters
- Fast detection of overcurrent and earth fault conditions
- Protection of downstream distribution equipment
- Prevents feeder damage and system disturbances
- Ensures stable operation of medium voltage networks
Protection Relay Capabilities
- Overcurrent protection (50/51)
- Earth fault protection (50N / 51N)
- Fault event recording
- Disturbance monitoring for system analysis
- Reliable tripping of circuit breakers
Panel Engineering Design
- Floor-mounted sheet steel enclosure
- Clear mimic diagram showing feeder status
- Front access for operation and monitoring
- Rear access for wiring and maintenance
- Structured wiring layout for simplified troubleshooting
Reliable Feeder Protection
- Protects feeder circuits against overload and faults
- Prevents damage to downstream equipment
- Improves distribution system reliability
- Ensures quick isolation of faulty feeders
Compared to Conventional Relay Panels
- Higher accuracy with numerical protection relays
- Advanced fault analysis capabilities
- Event and disturbance recording
- Improved system monitoring and diagnostics
Key Industry Sectors
- Industrial manufacturing facilities
- Power distribution utilities
- Infrastructure electrical networks
- Process industries and refineries
- Large industrial plants
Common Installations
- Medium voltage feeder protection systems
- Industrial substation distribution panels
- Utility feeder protection panels
- Captive power plant feeder circuits
- Industrial power distribution switchgear rooms
