Filter Unit For Continuous Oil Filtration; Weights; Tightening Torque - ABB UZE Installation And Commissioning Manual

1.5 Filter unit for continuous oil filtration

If the on-load tap-changer should have an oil filter unit for continuous oil filtration from ABB,
installation and commissioning instructions can be found in the manual for the oil filter unit,
"Oil Filter Unit for On-Load Tap-Changers, Manual" delivered with the oil filter unit.

1.6 Weights

Table 2 contains the approximate weights of all the models in the UZ range of on-load tap-
changers. The weight of the motor-drive mechanism is included in the overall weight.
Table 2. Weights for UZ on-load tap-changers in kg.
On-load tap-changer
Type designation
UZE.N, UZE.T
200/...
250/...
380/...
550/...
650/...
UZF.N, UZF.T
200/...
250/...
380/...
550/...
650/...
The weight of the motor-drive mechanism is approximately 110 kg

1.7 Tightening torque

The following tightening torques are recommended:
M6,
M8,
M10,
M12,
Welded stud bolts
M12,
unless otherwise stated in this guide.
1ZSE 5492-115 en, Rev. 5
10 Nm ±10 %
24.5 Nm ±10 %
49 Nm ±10 %
84 Nm ±10 %
42 Nm
Tap-changer with tank
without oil
700
700
930
1100
1100
720
720
900
1100
1100
(7.4 lbf x ft)
(18 lbf x ft)
(36 lbf x ft)
(62 lbf x ft)
(31 lbf x ft)
1 Introduction
Insert without motor-drive
mechanism
220
220
270
340
340
220
220
270
340
340
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