PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

Testing of Cables:
Once the cable is laid, following tests shall be conducted in presence of the
departmental representatives authorized by Engineer, before energizing the cable.
1. Insulation resistance test (Sectional and Overall).
2. Sheathing continuity test.
3. Continuity and conductor resistance test.
4. Earth test.
5. High voltage test.
Teat conducted shall be as per Indian standard and National Electrical code.
15.14 Control Switches.
Control and instrument switches shall be of rotary type flush mounting having
enclosed contacts which are accessible by the removal of cover and shall be
provided with properly designated escutcheon plates clearly marked to show the
operating positions. Control switches shall have momentary contacts, spring return
to centre with pistol grip handle. Instrument and selector switches shall have oval
knob.
15.15 Push Buttons.
Push buttons shall be of momentary contact type with rear terminal connections.
The colour of the push buttons shall be “Green” for start and “Red” for stop.
Whether required, the push button shall be suitably shrouded to prevent inadvertent
operations. They shall be provided with integral inscription plates engraved with
their functions. The contact element shall have at least 1 No. and 1 NC contacts.
The contacts shall be able to make and carry at least 6 Amp at 415 AC.
15.16 Indicating Lamps.
Indicating lamps shall be panel mounting type with rear connection. The lamps
shall be provided with the built-in series resistors on the lamp holder. The lamp
shall have translucent lamp cover, of suitable colour. The cover shall be oil and
dust proof poly-carbonate lense. The bulb and lenses shall be interchangeable and
replaceable from front of the panel.
GTS : General Technical Specification. Page 119