Physical Check
· Visual check for any physical damages on the enclosures, paint removal and breakage on components
· Paint shade as per the approved drawings.
· Cable feeding provisions
· General layout of the panel.
· Check whether all the components are fitted.
· Check for the Labels and nomenclature
· Size of Bus bars
Dimensional Check
· Over all dimensions with approved drawings.
· List of components its layouts
· Labels descriptions
Wiring and Control Circuit Check
· Instrument panel wiring.
· Control circuit wiring.
· Power wiring.
· Protective circuits
· Rating of breakers
· Rated voltage of all components
· Rating of Fuses
Mechanical Operations
· ON/OFF operations of the circuit breakers by manually.
· Draw out operations of the withdrawable breakers
· Breaker interlocking mechanism
· Electronic protection device of the breakers
· Operations of the control components like control switches, limit switches etc.
· Operations of the door interlocking mechanism.
Electrical Operations
· Electrical ON/OFF operations of the circuit breakers.
· Electrical functioning of Starters.
· Operations of components, contactors, control relays, push buttons, indications lamps etc.
· Checking of electrical interlocking and sequences.
· Checking of instruments
· Checking additional protection relays as Ground Fault & Earth Leakage
Torque Test
· Check all joints of electrical current carrying parts to ensure the tightness by torque range
· Bus bar joints
· Breaker terminals
Insulation Resistance Test
· To check the protective measure of the insulation value
· To check the continuity of the circuits.
Dielectric Test
Dielectric Test is conducted as per IEC on the power circuits (excluding controls, instruments and electronic components etc.) The test voltage 2.5KV is applied for a period of 1 min. in between
· 1. Phase and phase
· 2. Phase and neutral
· 3. Phase, neutral and earth
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