Test Operation Of A-Mechanism; Mounting The Hand Operating Mechanism Type He; Instruction Of Installation And Adjustment Of Switch- -Disconnector Type Nal/Nalf/Vr With Hand Operation Mechanism He - ABB NAL Series Mounting And Operation Manual

6.1. Test operation of A-mechanism

After having mounted the mechanism to the switch frame, check
that the latch H is in correct position by pulling it back to the
outermost position, see Fig. 5.
Test operation see item 4.1.

7.0 Mounting the hand operating mechanism type HE

The bevel gears are mounted with the switch in open posistion as
shown in Fig. 7.
The inclination of the operating tube must not exeed 40°, see
Fig. 8. Drilling of the operating tube, see Fig. 9.
Fig. 7 NAL/VR disconnector with earthing switch | Fig. 8 Hand operating mechanism | Fig. 9 Connection rod | Fig. 10-11 Mounting of hand
operating mechanism HE
Fig. 7
Fig. 10
7.1 Instruction of installation and adjustment of switch di-
sconnector type NAL/NALF/VR with hand operation mecha-
nism HE.
Step by step.
1. Take out the NAL/VR from the box. Open the contact knives to
maximum position and connect the drawbars (disconnected for
transport) with shaft. Install NAL/VR on support construction in
open position, see Fig. 10.
2. Opening spring is not charged (apply to NAL/NALF/VR with
A mechanism), see Fig. 11.
3. Install the bevel gear on the NAL/NALF/VR shaft (and earthing
switch). Be sure the wheels are in the correct position – the lar-
ger should be located to the right side – on switch disconnector
– on earthing switch – to the left, see Fig. 12.
Fig. 8
S
Fig. 9
Fig. 11
NAL/NALF/VR – Mounting and operation manual 7