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Testing &

Quality Services

Electrical testing, diagnostic checks, inspection and documented quality clearance for motors, generators, alternators, coils and rotating equipment.

Punjab Electric Industries supports repair and rewinding jobs with structured testing, inspection, no-load checks, insulation diagnostics, balancing reports and final quality documentation.

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Testing-Backed Repair

& Quality Clearance

Inspection and electrical testing support before, during and after repair work.

Industrial motors, generators, alternators and coils must be tested carefully before being cleared for dispatch or commissioning. A rewound or repaired machine should not be judged only by visual condition. Its insulation strength, winding health, electrical balance, mechanical running condition, vibration behaviour and no-load performance must be verified wherever applicable.

PEI provides testing and quality services for repaired, rewound, refurbished and inspected electrical rotating machines. The testing scope may include insulation resistance, polarization index, winding resistance, surge comparison, AC high voltage, DC Hi-Pot, Tan Delta, capacitance, no-load testing, vibration checks, current balance checks, noise/heating observation and final quality clearance.

The objective is to support each job with relevant technical checks and documentation based on machine type, voltage class, repair scope and customer requirement.

KEY SERVICE AREAS

Electrical, mechanical and documentation support for machine testing and quality verification.

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Motor Testing
Services upto 11 kV

Testing support for HT and LT motors upto 11 kV after repair, rewinding, overhauling or inspection.

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Generator Testing Services

Electrical and quality checks for repaired or rewound generators, including insulation and winding-related checks.

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Alternator Testing Services

Testing support for alternators after rewinding, repair, insulation treatment or mechanical work.

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Coil Testing

Inspection and electrical checks for HT coils, formed coils, spare coils and rewinding coils.

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Insulation Resistance / Megger Test

Measurement of insulation resistance to assess winding insulation condition.

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Polarization
Index Test

Assessment of insulation health through time-based insulation resistance comparison.

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Surge
Comparison Test

Testing support for detecting inter-turn weakness or winding irregularity in coils and windings.

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AC High

Voltage Test

Dielectric strength test for evaluating insulation withstand capability as per applicable scope.

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DC Hi-Pot
Test

High potential DC testing support for selected insulation systems and machine requirements.

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Winding
Resistance Test

Measurement of winding resistance to check winding continuity, balance and connection condition.

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Tan Delta Test

Diagnostic test for assessing insulation condition in HT machines where applicable.

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Capacitance
Test

Insulation-related diagnostic measurement used along with Tan Delta where applicable.

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No-Load

Test

Machine running test to observe current, noise, vibration, heating and operating behaviour without mechanical load.

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Vibration
Check

Mechanical running observation to identify vibration concerns after repair, balancing or assembly.

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Dynamic Balancing Report

Report support for balancing jobs involving rotors, armatures, fans, blowers, impellers or rotating assemblies.

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Noise / Heating Observationt

Operational observation during test run to identify abnormal sound, friction, heating or fitment issues.

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Current Balance

Check

Assessment of phase current balance during no-load or running observation.

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Test Report Documentation

Test records and reports shared as applicable to job scope and customer requirement.

TECHNICAL CAPABILITY

Key technical areas PEI evaluates during testing and quality checks.

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Insulation

Health

IR, PI, HV, DC Hi-Pot, Tan Delta and capacitance checks help assess insulation condition, moisture impact, dielectric strength and ageing-related weakness.

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Winding Integrity

Surge comparison, winding resistance and continuity checks help identify winding irregularity, connection issues, imbalance or possible turn-related defects.

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Dielectric Withstand

High voltage testing verifies whether the insulation system can withstand the required electrical stress after rewinding, repair or treatment.

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HT Machine Diagnostics

For HT motors, generators and coils, testing may include insulation resistance, PI, surge, HV, Tan Delta and capacitance checks based on voltage class and agreed scope.

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Running Performance

No-load testing helps observe current, noise, vibration, rotation, heating and basic mechanical behaviour before dispatch.

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Mechanical Condition

Vibration checks, noise observation, bearing condition, air gap observation and rotor fitment checks help identify mechanical issues that can affect machine reliability.

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Balancing Verification

Dynamic balancing reports and final balancing observations support repair jobs involving rotors, armatures, fans, blowers, impellers and other rotating assemblies.

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Documentation & Traceability

Test reports, inspection records and final quality clearance support procurement, maintenance, shutdown and audit requirements.

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Customer Witness Support

Where required, PEI can support customer inspection or witness testing based on agreed job scope and machine readiness.

TESTING, QUALITY & FACILITIES

Testing infrastructure and inspection practices used to support PEI repair and rewinding jobs.

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Electrical Testing

Facilities

  • High voltage test bench

  • AC high voltage test setup

  • DC Hi-Pot kit

  • Surge comparison test setup

  • Megger / insulation resistance testing equipment

  • 5 kV diagnostic digital Megger

  •  Tan Delta and capacitance test kit

  • Digital micro-ohm meter

  • Motor checker

  • Ratio meter

  • Motor / generator test bed

  • HT motor testing support up to 6.6 kV

  • AC / DC motor test board

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Mechanical &
Running Checks

  • Dynamic balancing machine

  • Vibration observation support

  • No-load test setup

  • Current observation support

  • Noise and heating observation

  • Rotor / bearing / fitment inspection support

  • Assembly and dismantling support

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Quality Practices

  • Visual inspection

  • Electrical test recording

  • Mechanical observation

  • Final quality clearance 

  • Customer witness inspection support, where required

  • Dispatch readiness review

  • Documentation as per job scope

High Voltage Test Bench

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DC Hi-Pot Kit

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Tan Delta & Capacitance Test Kit

Motor/Generator Test Bed

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Send Machine Details for Testing Review

Share nameplate, machine photos, fault details, previous test reports and required testing scope for a technical response.

Email

Call PEI Team

9610447170
7678133758

Address

F-50,Opp. Multimetals Ltd., Chambal Industrial Area, Kota, Rajasthan - 324003

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© 2026 by Punjab Electric Industries.

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