Page 166 - booklet draft

maintenance, it is proposed to arrange in built pressure gauge in AAL/BT
VCB with similar lines of SEIL/GEC ALSTOM makes VCB.

EXISTING ARRANGEMENT:-

e bottom
side for draining.

MODIFIED ARRANGEMENT:-

depth of 11mm to fix the pressure gauge with air flow from air tank. Bottom
cover of VCB (AAL only) is modified by enlarging 50mm diameter hole in to

70mm diameter hole for visibility of pressure settings of pressure gauge.

WORKS TO BE CARRIED OUT:-

1. Remove the bottom cover of VCB (AAL only). Existing 50mm diameter hole
to be enlarged to 70mm.

2.

done up to a depth of 11mm.

3. h can be
tightened with a 20 Size D-Spanner

4.

MATERIAL REQUIRED:- 01No. pressure gauge of suitable make (0-10kg/cm²,

Existing VCB without Gauge Modified with Gauge