Information

  • Document No.

  • Switchyard / Transformer Checklist

General

  • Time

  • ITP Inspection

  • Inspection Type

  • Basic Location

  • Specific Location/s

  • Attendees

  • Other Attendees

Earthing

  • Earth Grid?

  • Structural Earths

  • Step & Touch Measurements

  • Fences & Gates Earthed

  • Earthed Platforms for Switching

Oily Water Separator

  • Installed?<br>

  • Access for Maintenance

Security Fence

  • 2500mm Min Height

  • 50mm Ground Clearance

  • Top 500mm = Min 4x150mm apart (max) Strands of Barbed Wire

  • Access gates locked

Signage

  • Warning : Lettering 12mm (min) containing 'DANGER - HIGH VOLTAGE'.<br>Danger : bold letters min 40 mm. Containing<br> 'DANGER -ÿ

Indoor IP 54

  • Enclosure shall be painted mild steel. Naturally ventilated only.

Bottom Entry Gland Plate

  • All enclosures shall be fitted with removable 6mm thick brass bottom entry gland plates, suitable for removal of the entire gland plate with cables still attached. Gland plates shall have a minimum 20% spare capacity. Gland plates shall be bolted to the enclosure and fitted with a suitable gasket to maintain the IP rating. It shall be solidly bonded to the enclosure earth bar via a suitable flexible braided earth conductor and purpose stud mounted on the gland plate.

Floor Mounted Enclosures

  • Floor mounted enclosures shall be fitted with a 100mm hot dip galvanised plinth.

Doors

  • Double return edges and be able to open to angle of 135°. T-type handles shall be provided, except where low voltage equipment is located within the enclosure and the door locks then requiring a special tool to be opened. A double return shall be provided on the body of the enclosure.

Door Stay

  • To endure that the doors open to the required angle and retain them in the open position.

Document Pocket

  • All panels shall have a document pocket inside the door. Document holders shall be welded channel suitable to accept A4 documents.

Door Stiffening

  • Doors shall be suitably stiffened to prevent distortion. In any case, no door shall be more than 850mm wide.

Hinges x 2

  • Enclosures with doors <900mm high shall incorporate a minimum of two hinges. Hinges shall be chrome plated with stainless steel pins, and one pin longer than the others.

Hinges x 3

  • Enclosures with doors >900mm high shall have a minimum of three hinges and shall be suitably stiffened.

Centre Mullion

  • Enclosures with clear openings larger than 800mm, shall have doors that close on a centre mullion.

8mm Square Locks

  • Individual 8ram square key door locks shall be fitted to all field mounted electrical enclosures. Three point door locking mechanisms are not acceptable.

HD Neoprene Gasket Seal

  • Seals shall be glued and held in place by continuous retaining strips.

Finish

  • All DBs shall be painted orange, paint code X15 (in accordance with AS2700) with a white escutcheon plate. Refer: GROS-TSTD-MS-003

Gear Tray

  • All internally mounted equipment such as relays, remote I/O, etc shall be mounted on the equipment gear plate only. Side mounting of equipment is not acceptable.

Circuit Breaker Chassis

  • Circuit breaker chassis poles shall be colored according to the phase to which they are connected. Red, white and blue shall be used for the phase colors and black for the neutral.

Circuit Breakers

  • Lockouts shall be of metal construction and integrally fitted to the circuit breaker and main switch. Removal of the escutcheon shall not prevent the circuit breaker from being locked in the OFF position.

RCD Test Outlet

  • DIN rail mounted round earth pin Clipsal 4PSO10DL or equivalent.

Lighting Control

  • Lighting control circuits shall have sufficient space for all the lighting control equipment, including contactors, manual over-ride switches, relays, timers and terminals for external and control cabling. Where photo-electric cells are required an escutcheon mounted on-off-auto switch shall be provided. Labeled terminals shall be provided within the distribution boards for connection of external photo-electric cells by others. All control circuits within the board shall be protected by ELCB.

Segregation

  • Terminals strips and ducting segregated by voltage: 240Vac power wiring(shroud and warning label), 4-20mA analogue signals (IS signals in separate enclosure in field), 24Vdc digital signals (IS signals in separate enclosure in field), instrument or control system communications. All voltages above extra low voltage shall be suitably shrouded with a minimum IP2XB.

Intrinsically Safe

  • Intrinsically safe circuits and hazardous area enclosures shall be designed and installed in accordance with the requirements of AS/NZS 3000, AS/NZS 60079.

Terminals

  • 35mm DIN Rail mounted, screw type terminals. Minimum terminal size 2.5mm2 wiring, power terminals sized for application. Terminate all cores with 20% spare. Standard stoppers, dividers, barriers tier labels and bridging links to IP2XB.

Internal Wiring

  • Terminals mounted vertically, split PVC ducts on either side. There shall be adequate clearance to read wire numbers in full and readily insert and extract wires. (Min 50mm), Use labeled shrouds on all above ELV.

Labels

  • All equipment shall be identified by a label attached to a non-detachable part. Refer to the specification.

Inspector

  • Inspector

  • Signature

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