Star Delta / DOL Starter Panel
Reliable Motor Starting Solutions for Industrial Applications
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.

Product Overview & Technical Architecture
What is Star Delta / DOL Starter Panel?
Panel Electro manufactures CPRI Type Tested Star Delta & Direct-On-Line (DOL) Motor Starter Panels engineered for high-performance motor starting, transient current reduction, and comprehensive electrical protection across industrial, commercial, and utility installations. Built with Tier-1 switchgear (ABB, Schneider Electric, Siemens, L&T, Legrand), heavy-duty electrolytic copper busbars, and precision timer relays, our starter panels deliver seamless operation for motors ranging from 1 HP up to 200 HP.
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.

Internal Switchgear & Control Components Grid
Top-tier electrical switchgear, protection relays, and control electronics integrated inside Panel Electro MCC & PCC Panels.
Target Industrial, Commercial & Infrastructure Applications
Key Engineering Features & Design Highlights
Star Delta / DOL Starter Panel Parameters Table
Supported Tier-1 Component Makes & Global Switchgear OEMs
Supplied switchgear configurations depend on customer specifications and project BOQ requirements.
Applicable Engineering Standards for Star Delta / DOL Starter Panel
Low-Voltage Switchgear and Controlgear Assemblies
Mandates design verification, temperature rise limits, dielectric testing, short-circuit withstand, and internal arc protection.
Low-Voltage Switchgear and Controlgear Components
Governs performance standards for Circuit Breakers (ACB/MCCB/MCB), Contactors, Starters, Disconnectors, and Control Switches.
Safety of Machinery - Electrical Equipment of Machines
Regulates electrical safety, operator emergency stop circuits, earthing bonding, and automated machine drive panels.
Degrees of Protection Provided by Enclosures (IP Code)
Defines ingress protection levels against solid objects, dust ingress, water jets, and weather exposure (IP42 to IP66).
Applicable International / National Standard for Star Delta / DOL Starter Panel
Verified design compliance, structural rigidity, and electrical insulation protocol as mandated for Star Delta / DOL Starter Panel.
Indian Standard Specification for Factory Built Assemblies (FBA)
Indian national benchmark for low-voltage switchgear assemblies, busbar short circuit capacity, and mechanical strength.
Optional PCC Panel Accessories & Sub-Assemblies
Factory Quality Inspection & Testing Protocols
100% factory verification of all electrical, mechanical, and control wiring parameters.
Customer witnessed live power, timer transition delay, and trip interlocking FAT.
2.5kV HV dielectric isolation test (>1000 MΩ insulation resistance).
Auto/Manual transition check, contactor coil pickup/drop-out, and overload trip test.
Precision digital timer calibration for Star-to-Delta changeover delay (0.1s to 30s).
Simulated single phase loss & voltage unbalance trip response check.
Powder coating thickness (70-90 µm), neoprene gasket sealing, and terminal labelling audit.
Calibrated torque wrench check of all copper busbar bolts and power terminals.
Technical Inspection Gallery: Star Delta / DOL Starter Panel

1. Front View Elevation
Front view elevation photograph of Star Delta Motor Starter Panel with START/STOP push buttons and ammeter.
1. Front View Elevation
Front view elevation photograph of Star Delta Motor Starter Panel with START/STOP push buttons and ammeter.
Official Catalogues, Datasheets & Test Certificates
Star Delta & DOL Starter Panel Official Catalogue
Star Delta / DOL Starter Technical Datasheet
Starter Panel General Arrangement (GA) Drawing & Schematic
Control Wiring & Terminal Interconnection Diagram
Installation, Operation & Maintenance Manual
CPRI Routine Test & Type Test Inspection Report
15 Frequently Asked Technical Questions: Star Delta / DOL Starter Panel
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Get Engineering Support from Panel Electro & Fire Automation
Our engineering team provides custom single-line diagram (SLD) reviews, busbar calculation sheets, and itemized technical BOQ quotes tailored to your plant requirements.