What voltage levels are supported by RMU panels?

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HT Ring Main Unit (RMU 11kV/33kV Panel)

SF6 Gas Insulated Compact HT Ring Main Units for 11kV & 33kV Secondary Distribution

Panel Electro & Fire Automation manufactures heavy-duty Power Control Centre (PCC) panels up to 6300A. Built with 2.0mm CRCA steel framework, 99.9% electrolytic copper busbars, and Form 4b compartmentalization for maximum operating safety and uninterrupted power distribution.

Rated Current630A to 6300A

Short CircuitUp to 100kA / 1s

Segregation FormIP42 / IP54 / IP55

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HT Ring Main Unit (RMU 11kV/33kV Panel) - Specialized Panel View

Engineering Deep-Dive

Product Overview & Technical Architecture

What is HT Ring Main Unit (RMU 11kV/33kV Panel)?

Panel Electro HT Ring Main Units (RMU) provide medium-voltage (11kV / 33kV) power switching and transformer protection in compact, SF6 gas sealed stainless steel tanks for maximum reliability.

Capable of handling high continuous currents up to 6300A, a PCC panel houses heavy-duty Air Circuit Breakers (ACBs), Molded Case Circuit Breakers (MCCBs), high-capacity busbar chambers, numerical protection relays, and smart digital power quality meters.

Product Visual

HT Ring Main Unit (RMU 11kV/33kV Panel) - Product Overview View

Switchgear Component Architecture

Internal Switchgear & Control Components Grid

Top-tier electrical switchgear, protection relays, and control electronics integrated inside Panel Electro MCC & PCC Panels.

Motor Starter (DOL/Star Delta)

Primary Motor Switching

MPCB Circuit Breaker

Short Circuit & Thermal Protection

Heavy Duty Contactor

High Endurance Switching

Electronic Overload Relay

Microprocessor Thermal Protection

Variable Frequency Drive (VFD)

Closed-Loop Speed Control

Soft Starter Unit

Stepless Voltage Ramp

Control Transformer

24V DC / 110V AC Power

Auxiliary Relays & Timers

Control Circuit Logic

Push Buttons & Selectors

Door Local Control

LED Indication Lamps

Status & Trip Indication

Multifunction Energy Meter

Class 0.2s RS485 Modbus

Current Transformers (CT)

Precision Current Sensing

Thermostat Exhaust Fan

Cabinet Ventilation

Canopy Door Light

Internal Cabinet LED

Heavy Terminal Blocks

Control & Power Wiring

Cross-Linked Ferruled Wiring

Numbered Wire Harness

Anti-Condensation Heater

Hygrometer Controlled

SCADA / IoT Gateway

Modbus / Ethernet Telemetry

Versatile Industry Deployment

Target Industrial, Commercial & Infrastructure Applications

Industrial Plants

Power Plants

Textile Industry

Chemical Industry

Food Processing

Pharmaceutical Plants

Commercial Buildings

Hospitals

Data Centers

Infrastructure Projects

Steel Plants

Automobile Industry

Water Treatment Plants

EPC Turnkey Projects

Engineering Excellence

Key Engineering Features & Design Highlights

Heavy Duty Construction (2.0mm CRCA)

Modular Expandable Design

Front Access Maintenance

Rear Access Option

Top / Bottom Cable Entry

Electrolytic Copper Busbar (99.9% ETP)

Aluminium Busbar Option (EC Grade)

Fully Compartmentalized (Form 4b)

Draw Out ACB Option

Floor Standing Self-Supporting Base

Indoor Substation Mounting

Outdoor IP55 Weatherproof Kiosk

High Short Circuit Withstand (up to 100kA)

Easy Maintenance Alley Space

Expandable Busbar Extension Bay

Digital Energy & Harmonics Metering

Remote BMS / SCADA Telematics

SCADA Ready Modbus Port

IoT Ready Cloud Telemetry

Microprocessor LSIG Trip Protection

Technical Specifications Matrix

HT Ring Main Unit (RMU 11kV/33kV Panel) Parameters Table

IEC 61439 & IS/IEC 61439 Certified

Rated Operational Voltage:415V / 690V AC

Rated Current (Amperage):630A, 800A, 1250A, 1600A, 2000A, 2500A, 3200A, 4000A, 5000A, 6300A

System Frequency:50Hz / 60Hz

Busbar Material:Electrolytic Copper (99.9% ETP) / Aluminum (EC Grade)

Busbar Insulation:Heat Shrink Sleeve / Epoxy Coating

Short Circuit Rating:50kA / 65kA / 80kA / 100kA for 1.0 sec

Ingress Protection:IP42 / IP54 / IP55 / IP65

Form of Separation:Form 2 / Form 3 / Form 4 (Form 3b & Form 4b)

Enclosure Color:Siemens Grey RAL 7032 / Pebble Grey RAL 7035

Mounting Option:Floor Standing / Indoor / Outdoor

Cable Entry:Top / Bottom Cable Entry Gland Plates

Compliance Standards:IEC 61439, IEC 60947, IEC 60529, IS/IEC 61439, IS 8623

Dimensions Footprint:2200H x 1000W x 1000D mm per bay (Custom SLD)

Operating Ambient Temp:-5°C to +55°C Ambient

Sheet Metal Thickness:2.0mm CRCA Load Frame, 3.0mm Gland Plates

Breaker & Trip Protection:Microprocessor Trip Unit (LSIG) / Numerical Relays

Metering & Monitoring:Class 0.2s / 0.5s RS485 Modbus Dual-Source Meters

Communication Gateway:RS485 Modbus RTU / Ethernet RJ45 / Profibus DP

SCADA Readiness:SCADA Ready & IoT Telematics Integration

PLC Automation Support:Potential-Free Dry Contacts & 24V DC I/O

* Custom busbar layouts, dual incoming provisions, and automatic bus couplers available upon request.

Switchgear Brands Integration

Supported Tier-1 Component Makes & Global Switchgear OEMs

Supplied switchgear configurations depend on customer specifications and project BOQ requirements.

ABB

Global Switchgear Partner

Schneider Electric

Master Switchgear OEM

Siemens

Automation & Breaker OEM

L&T Electrical

Indian Industrial Standard

Legrand

Protection & Distribution

Mitsubishi

Heavy Breaker Drives

Fuji Electric

Industrial Breakers

BCH Electric

Industrial Starters

C&S Electric

Power Protection

Lovato

Energy Management

Selectron

Digital Relays & CTs

Customer Approved Makes

Custom Project BOQ

Regulatory & Compliance Framework

Applicable Engineering Standards for HT Ring Main Unit (RMU 11kV/33kV Panel)

Verified Compliance

IEC 62271-200

Applicable International / National Standard for HT Ring Main Unit (RMU 11kV/33kV Panel)

Verified design compliance, structural rigidity, and electrical insulation protocol as mandated for HT Ring Main Unit (RMU 11kV/33kV Panel).

Domain Scope:HT Ring Main Unit (RMU 11kV/33kV Panel) Manufacturing & Quality Protocol

IS 13118

Applicable International / National Standard for HT Ring Main Unit (RMU 11kV/33kV Panel)

Verified design compliance, structural rigidity, and electrical insulation protocol as mandated for HT Ring Main Unit (RMU 11kV/33kV Panel).

Domain Scope:HT Ring Main Unit (RMU 11kV/33kV Panel) Manufacturing & Quality Protocol

Modular Add-Ons

Optional PCC Panel Accessories & Sub-Assemblies

Bus Coupler Section with Mechanical & Electrical Interlock

Automatic APFC / Capacitor Bank Section for Power Factor Correction

Digital Dual-Source Energy Meter & Power Quality Analyzer

RS485 Modbus / Ethernet Communication Gateway

Class 0.2s Precision Current Transformers (CT) & Potential Transformers (PT)

Thermostat Controlled Space Heater with Hygrometer

Cabinet Internal LED Illumination Canopy Light

High-CFM Roof Exhaust Fan & Dust Filters

Door Safety Limit Switches & Interlocks

Quality Assurance Protocol

Factory Quality Inspection & Testing Protocols

01.Factory Acceptance Test (FAT)

Comprehensive customer witnessed live power & functional testing.

02.Routine Test

100% factory verification of all mechanical and electrical parameters.

03.Insulation Resistance Test

2.5kV HV dielectric isolation test (>1000 MΩ resistance).

04.Functional Test

Interlock, relay trip pulse, and automatic transfer sequence check.

05.Visual Inspection

Paint thickness (70-90 µm), gasket sealing, and labelling check.

06.Torque Test

Calibrated torque wrench audit of all busbar joint bolts.

07.Busbar Clearance Test

Creepage & clearance verification as per IEC 61439 limits.

Industrial Inspection Views

Technical Inspection Gallery: HT Ring Main Unit (RMU 11kV/33kV Panel)

Technical Specifications

HT Ring Main Unit (RMU 11kV/33kV Panel) - Front View Elevation Photograph

1. Front View Elevation

Front view elevation photograph of HT SF6 Gas Insulated Ring Main Unit (11kV/33kV RMU) with load break switches, vacuum circuit breaker (VCB), and digital protection relays.

Front View • Angle 01 of 05

1. Front View Elevation

Front view elevation photograph of HT SF6 Gas Insulated Ring Main Unit (11kV/33kV RMU) with load break switches, vacuum circuit breaker (VCB), and digital protection relays.

RAL Color Standard:RAL 7035 Light Grey

Busbar Material:99.9% Electrolytic Copper

Switchgear Components:Tier-1 Black Housings (Siemens/L&T/ABB)

Wiring Finish:Ferruled Professional Wire Harness

Technical Documentation Library

Official Catalogues, Datasheets & Test Certificates

PDF Document Center

Catalogue3.8 MB

HT Ring Main Unit (RMU 11kV/33kV Panel) Official Product Catalogue

Datasheet2.1 MB

HT Ring Main Unit (RMU 11kV/33kV Panel) Comprehensive Technical Datasheet

GA Drawing4.5 MB

HT Ring Main Unit (RMU 11kV/33kV Panel) General Arrangement (GA) Drawing & SLD

Operation Manual5.2 MB

HT Ring Main Unit (RMU 11kV/33kV Panel) Installation, Operation & Maintenance Manual

Datasheet1.9 MB

HT Ring Main Unit (RMU 11kV/33kV Panel) CPRI Routine Test Report Copy

Catalogue3.1 MB

HT Ring Main Unit (RMU 11kV/33kV Panel) CPRI Type Test Certificate Reference

Engineering FAQ Knowledgebase

1 Frequently Asked Technical Questions: HT Ring Main Unit (RMU 11kV/33kV Panel)

1 Detailed Technical Answers

Available for 11kV, 22kV, and 33kV distribution networks.

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Our engineering team provides custom single-line diagram (SLD) reviews, busbar calculation sheets, and itemized technical BOQ quotes tailored to your plant requirements.

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