3 Description
B4 SF
6
density monitor
MA Pressure
gauge
W1 Filling
flange
W2 Test
connection
Fig. 19
Diagram of SF
6
monitoring in a pole column
The density of the SF
6
arc quenching material in the gas compartment is monitored by a density monitor B4 (Fig.
21). The SF
6
filling and response values for the density monitor can be found in section 3.1.6
Arc Quenching
Medium SF
6
.
The connection W1 (Fig. 20) for filling the pole column with SF
6
gas is in the relevant operating mechanism unit
next to the pressure gauge. The test connection W2 is located in the base (at the side of the operating
mechanism cubicle) (Fig. 21).
34
1001304a
W1 Filling
flange
Fig. 20
Filling
flange W1
