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Industrial Motor 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.

Industrial motor undergoing no-load trial on test bed

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.

Technician measuring electrical parameters on repaired motor

Motor Testing
Services upto 11 kV

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

HT motor connected for workshop electrical testing

Generator Testing Services

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

Generator winding testing after industrial repair

Alternator Testing Services

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

Alternator electrical checks before final clearance

Coil Testing

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

HT coil undergoing insulation and winding test

Insulation Resistance / Megger Test

Measurement of insulation resistance to assess winding insulation condition.

Megger testing motor winding insulation resistance

Polarization
Index Test

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

Polarization Index test on HT motor insulation

Surge
Comparison Test

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

Surge comparison testing of industrial motor winding

AC High

Voltage Test

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

AC high-voltage test on motor winding insulation

DC Hi-Pot
Test

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

DC Hi-Pot testing of repaired motor insulation

Winding
Resistance Test

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

Winding resistance measurement across three motor phases

Tan Delta Test

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

Tan Delta and capacitance test kit for HT machines

Capacitance
Test

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

Motor generator test bed at PEI workshop

No-Load

Test

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

Vibration check during final motor quality inspection

Vibration
Check

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

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

Dynamic Balancing Report

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

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

Noise / Heating Observationt

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

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

Current Balance

Check

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

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

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.

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

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.

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

Winding Integrity

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

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

Dielectric Withstand

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

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

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.

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

Running Performance

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

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

Mechanical Condition

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

Measurement of insulation resistance to assess winding insulation condition.

Balancing Verification

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

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

Documentation & Traceability

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

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

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.

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

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

IR, PI, HV, DC Hi-Pot, Tan Delta and capacitance checks help assess insulation condition, moisture impact, dielectric strengt

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

High voltage testing verifies whether the insulation system can withstand the required electrical stress after rewinding, rep

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

No-load testing helps observe current, noise, vibration, rotation, heating and basic mechanical behaviour before dispatch.
Dynamic balancing reports and final balancing observations support repair jobs involving rotors, armatures, fans, blowers, im

DC Hi-Pot Kit

Surge comparison, winding resistance and continuity checks help identify winding irregularity, connection issues, imbalance o

Tan Delta & Capacitance Test Kit

Motor/Generator Test Bed

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

Send Machine Details for Testing Review

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

Email

punelect@gmail.com

Call PEI Team

9610447170
7678133758

Address

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

For HT motors, generators and coils, testing may include insulation resistance, PI, surge, HV, Tan Delta and capacitance chec
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