Earth Leakage Relay (ELR) Control Panel
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The Thermonic ELR Control Panel is designed to detect and isolate earth leakage faults in electrical systems, ensuring maximum protection for personnel, equipment, and installations. It continuously monitors current leakage through an earth leakage relay (ELR) and automatically trips the circuit when the leakage exceeds a pre-set threshold — preventing fire hazards, insulation failures, and equipment damage.
Built with high-sensitivity relays and precision wiring, the panel provides visual fault indication, trip status, and test/reset functionality, making it an essential safety solution for industrial, commercial, and infrastructure power distribution systems.
Thermonic ELR Panels are designed and tested as per the following national and international standards:
- 🌐 IEC 60947-2 – Low Voltage Switchgear & Circuit Breakers
- 🇮🇳 IS 12640 / IS 13947 – Indian Standard for Earth Leakage Protection
- ⚙️ IEC 61439 / IS 8623 – Panel Construction & Assembly Standards
- 💡 ISO 9001:2015 – Certified Manufacturing Quality
✅ Complies with electrical safety standards for human and equipment protection.
Thermonic ELR Control Panels are suitable for all applications requiring leakage detection and safety protection:
- 🏭 Industrial Plants & Machinery – Motor control centers, process lines.
- 🏢 Commercial Buildings – Distribution & sub-main panels.
- 🛠️ Workshops & Factories – Protection against leakage faults.
- ⚡ Switch Rooms & DG Systems – Isolation and alarm for insulation failure.
- 🏗️ Infrastructure Projects – Safety-critical installations requiring ELR monitoring.
🔥 Ideal for all systems requiring early detection of leakage currents to prevent accidents or electrical fires.
Each ELR Control Panel undergoes full functional and safety testing before dispatch.
✅ Routine Tests:
- 🔍 Visual & Dimensional Inspection
- ⚙️ Functional Test of ELR Trip Operation
- ⚡ Leakage Current Simulation & Threshold Calibration
- 🚨 Alarm, Test, & Reset Verification
- 🔗 Insulation Resistance & Dielectric Strength Test
✅ Special Tests (on Request):
- 🌡 Endurance Test of Relay & Contactor Circuit
- 📉 Trip Accuracy & Timing Verification
📑 Documentation & Certificates:
- 📄 Test & Calibration Reports
- 🎯 Certificate of Conformity
- 🏗 IS / IEC Compliance Certificates
Thermonic ELR Panels are engineered with transparent design validation and customer review before manufacturing, ensuring full technical assurance.
🧾 Documents Shared with Client (Before Production):
- 📐 GA Drawing – Panel layout & component arrangement
- 🔌 SLD – Circuit logic with ELR, CTs & trip circuits
- ⚙️ BOM – Switchgear, relays, contactors, and meters
- 📘 Technical Notes – Earth fault logic & wiring details
- 🧠 Control Scheme – ELR operation with trip/reset sequence
Thermonic ELR Control Panels can be customized as per project requirements and site conditions:
- ⚙️ Relay Type – 30 mA – 30 A adjustable Earth Leakage Relay.
- 🔌 Protection Range – Single or multi-feeder configurations.
- 🧭 Operation Modes – Auto / Manual / Reset / Test.
- 🚨 Indications – Trip, Fault, Power ON, Test, Reset.
- 🏗️ Enclosures – CRCA powder-coated IP54/IP65; SS on request.
- 🔗 Integration – Alarm annunciation, MCC interface, or remote trip relay.
🔥 Thermonic ELR Panels provide intelligent protection against earth leakage — a must-have for electrical safety, reliability, and compliance across industries.
