Electrical Equipment Testing

Electrical Equipment Testing & Scope

ALCALAB has electrical equipment testing team for testing of Electrical Equipments and protective relays (Electromechanical & Numerical) commonly used in the industries as described below.

Routine Test (offline Test) Commissioning Test of Electrical Equipment at site

Electrical Motors of all capacity (AC/DC)

AC Motor Testing
Following Test shall be carried out at least once in a year of as and when required

IR Test / PI Test
Resistance & Inductance Test
Surge Comparison Test (On Demand)
Hi-Pot Test

DC Motor Testing
Following Test shall be carried out at least once in a year of as and when required

IR Test / PI Test
Field Body Drop Test
Armature Drop Test
Neutral Axis Test (Adjustment is Owner’s Scope)
Hi-Pot Test

Switchgear, Bus Bar Testing & Servicing

HV Breaker Testing
Following Test shall be carried out for HV Breaker

IR Test / PI Test
Breaker Contact Resistance Measurement
Breaker Operation Timing Measurement
Hi-Pot Test
Scheme Checking

LV Breaker Testing
Following Test shall be carried out for LV Breaker

IR Test / PI Test
Breaker Contact Resistance Measurement
Breaker Protection Release with Primary/Secondary Injection Test
Breaker Protection Release with Release Functional Test kit

Bus-Bar Testing
Following Test shall be carried out

IR Test / PI Test
Contact Resistance Measurement
Hi-Pot Test

Insulator Testing

Insulator Testing
Following Test shall be carried out

IR Test
Hi-Pot Test

CT/PT Testing

CT Testing
Following Test shall be carried out

IR Test of Primary / secondary winding
Ratio Test
Winding resistance Measurement
Polarity Test
Knee Point Voltage Test
Primary Injection / Secondary Injection Test
Hi-Pot Test

PT Testing
Following Test shall be carried out

IR Test of Primary / secondary winding
Ratio Test
Winding resistance Measurement
Polarity Test
Induced Voltage Test
Induced Over Voltage Test
Back-To-Back Test

Lightning Arrestor / Surge Arrestor Testing

Lightening Arrestor Testing
Following Test shall be carried out

IR Test (Before & After Hi-Pot)
Hi-Pot Test with Leakage current

High Voltage Testing of Electrical Equipment & Safety appliances

High Voltage Test
Following Test shall be carried out

IR Test (Before & After Hi-Pot)
Hi-Pot Test with Leakage current

Transformer Testing

Transformer Testing
Following Test shall be carried out

IR Test / PI Test
magnetic Balance Test
Voltage Ratio Test with Magnetizing Current
Vector Group Test
No Load Loss Test
Short Circuit Test (% impedance calculation)
DC winding Resistance Measurement
Transformer Protection Trial
Transformer Body Earthing Status
Core Bolt Meggering (as applicable)
NGR Measurement (as applicable)
Bushing Test (132 KV & above) as applicable
Tan delta & capacitance Test (20 MVA & above) as applicable
SFRA Test (33 MVA & above) as applicable

Transformer oil DGA & Property Test as per NABL standard

Tan Delta
Acidity Test/ Neutralization
Moisture Content ( water content )PPM
Interfacial tension test
Volume Resistivity test /Specific resistance
BDV
Flash Point
Sludge test
Kinematic Viscosity
Density
DGA
Furan Analysis

Transformer oil filtration at site

Protection Relay Testing (Electromechanical as well as numerical)

Operation check through single phase Secondary current injection ( For ND relays)
Operation check through Three phase Secondary current injection ( For Directional relays, Distance Relays, U/V,O/V Relays)
Operation Check for Trafo Differential Relays for slope & Stability
Coil Resistance measurement for auxiliary relays

Relay Coordination Study

Earth Pit Testing

Equipment Earth pit test
Neutral Earth pit test

HV Tan-Delta Test