Wilson Electronics BS4800 Specifications download pdf (Page 37)

NAIROBI OPERATIONAL HUB

UNOPS Building, UN Lane, Off UN Avenue Tel: +254 20 7621120

P.O Box 783,Village Market, 00621 E-mail: info@unops.org

Nairobi, Kenya Website: www.unops.org

UNOPS is ISO 9001 certified

6. Sizes and types of protective devices.

7. Sizes and types of incoming and outgoing cables.

8. Contacts location references of relays and other control devices (if any).

B. Charts shall be typed on A4 size sheets. They shall be enclosed in a clear

plastic envelope and shall be securely fixed to the inside cover of the unit.

Additional copies of the charts shall be included in the Operation and

Maintenance Manuals.

2.05 CABLE IDENTIFICATION TAGS

A. All cables which exit from manholes, vaults, handholes, and

transformer or switch enclosures shall be properly tagged or labeled. Tags

shall be permanent, non-corrodible and clearly readable. Tags should include

the information listed below for the various circuit categories:

Primary Cables - 11 kV

Feeder Name

Voltage

Phase (for single conductor cables)

B. Cable identification tags for wire and cable circuits shall be of an opaque nylon

material arranged to include a marker plate, non-releasing nylon ties, and cable

fastening tail. One side shall be roughened to hold black nylon permanent ink.

Identification shall be permanent and waterproof. The holding device shall be

designed to allow the fastening tail to pass around the cable through the holding

device, and prevent removal of the tail without cutting it loose from the marker.

Cable identification shall be inscribed in Arabic and English.

2.06 CABLE WARNING TAPES

A. For buried LV and HV cables use warning tapes according to the standard practice

of Electricity Supply Authority and applicable international standards.

B. Cable warning tapes shall be of polythene, not less than 150 mm wide and at least

0.25 mm thick. They shall be yellow in color for LV and MV cables and bear the

continuously repeated legend – “CAUTION ELECTRIC CABLE BELOW” or

similar in English and Arabic, in black letters not less than 30 mm high.

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Wilson Electronics BS4800 Specifications Page 37