Tuesday, September 10, 2013

Check list of checks to be made during the final quality inspection (How to assemble a switchboard guide)

Compliance checks

>>Identification & column numbers

>>Type

>>Dimensions

>>Compliance of front panel, block diagram

>>Handling devices

Visual checks

>>Paint (colour, homogeneity, finishing)

>>No scratches and deformations

Frame, structure

>>Functioning of doors, swivelling front panels

>>Locks (type, functioning)

>>IP degree of protection

Switchgear

>>Position

>>Fastening

>>Characteristics: nominal range, breaking capacity

>>Identification and marking

>>Safety perimeter

>>Mechanical operation

>>Mechanical indication (test position, connected, etc.)

>>Plugging-in and withdrawing procedure

>>Striker pin

>>Accessibility of switchgear

>>Ability to connect on terminals or pads

>>Accessibility for connection

>>Locking, foolproofing

Busbars

>>Busbar cross-section

>>Coating and internal arc device

>>Busbar support (fastening device and number)

>>Marking

>>Compliance of joint blocks

Cables & flexible bars

>>Cross-section and characteristics of conductors

>>Compliance of installation mode (fastening, sharp edges, etc.)

>>Auxiliary Power separation

>>EMC protection

Connection

>>Compliance and quality of bolted connections

(e.g. covering and fastener type)

>>Torque and marking

>>Crimping quality

Protection of persons

>>Earth bar (cross-section and fastening)

>>Earthing braids

>>Forms

>>Bonding continuity

>>IP of measuring devices (fastened on doors)

>>Blanking shutters

>>Terminal guards and covers

>>Fastening of protective barriers

Safety distances

>>Clearance

>>Creepage distances

Dielectric check (power circuit)

 

Insulation check (power circuit)

>>Megohmmeter

Electrical compliance

>>Phase order >>Phasing test

>>Voltages, control polarities >>Electric tests, voltmeter

>>Distribution of polarities (inter-column connections) >>Electric tests, voltmeter

Functional tests: >>Test consoles, injection test bench, etc.

>>Operating sequence (controls and signalling)

>>Checking of source transfer

>>Electrical and mechanical inter-locking

>>Checking of opening/closing orders of units

>>Trip tests (defects)

>>Information report (OF-SDE-SD)

>>Signalling (indicator lights, etc.)

>>Injection on protection and measurements (values, etc.)

Measurement and protection:

>>Protection tests (fault tripping, etc.)

>>Injection on measuring devices (Pa, PWH, etc.)

>>CT winding direction

Device settings (circuit monitors, protections, etc.)

Automation and communication:

>>Equipment addressing

>>Network tests (read/write)

>>Verification of PLC inputs/outputs

>>Validation of the PLC (according to functional specifications)

Cleaning and preparation of columns

Documentation related to switchboard

>>Switchboard building drawings

>>Installation and maintenance documents

>>Switchgear guides

>>List of shortages

Packaging

>>Compliance of the package

>>Compliance of packaging

 

Schneider electric (How to assemble a switchboard guide)

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