Testing, disconnecting and earthing pilot cables

With the risk of earth fault current ever present on low voltage auxiliary cables, the earthing of pilot circuits at a convenient position near the point of work is a crucial element of any installation. Weidmuller’s Klippon Pilot terminal boxes come as a complete unit for testing, disconnecting and earthing pilot cables.

These tough, durable boxes house the pilot core earths, as well as PPT/35 pilot protection terminals, a device that has been designed and developed to meet the ESI standard 12-4 1973 ‘Terminating equipment for pilot cables subject to induced transient voltages exceeding 650V rms’.

Mounting onto plastic rail type TSK35, and dimensioned according to EN50 022 (BS 5584:1978), the PPT/35 gives an insulation test level of 15kV ac for one minute. This covers the creepage and clearance paths between terminals, between the terminal and earth, and across the disconnect.

Contact Details and Archive...

• Weidmuller Ltd

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