ABB SF6 LTB 245E1 BLG 1002A, Product Manual

Page: 52 / 231

Assembly Instructions Pressurising the poles
1HSB435410-2 enrev1
27
6. Pressurising the poles
The circuit-breaker poles are supplied vacuum-processed and filled with SF
6
gas at
a pressure of 0.12- 0.13 MPa abs at 20˚C.
6.1 Preparations
WARNING
During commissioning, the SF
6
gas or the mixed gas needs to be refilled
to the pressure stated on the rating plate. Different gas pressures can occur,
depending on the different requirements with regard to the lowest ambient
temperature.
Pressurisation takes place directly from a gas cylinder using the gas filling
equipment, ABB article number 1HSB 445439-A.
The gas hose for the filling equipment is supplied vacuum-pumped and filled with
SF
6
gas.
WARNING
To avoid personal injury while refilling, due to possible transport damage
to the porcelain, assembly personnel must exercise great care and stay in a
protected and safe area (with regard to splintering) away from the circuit-
breaker. The gas cylinder and refilling equipment should be placed in the
same area.
• Connect the control cables to the operating mechanism’s terminal blocks for
opening and closing. The cables are routed to the control room or protected
area away from the circuit-breaker.
• Connect the cables to appropriate pushbutton switches.
• Set the operating mechanism’s control switch in the remote position.
• Switch on the motor starter so the closing springs are tensioned.