Operating Mechanism Maintenance
Maintenance
1HSB515409-100 en rev2
15
4.6 Heater element
The operating mechanism is fitted with a heater element to prevent condensation
and should always be connected.
•
Measure the resistance and check the voltage failure signal, if there is such,
after every15 years or 5,000 operations.
Figure 4-6. Heater element
Data
70 W heater element permanently connected , 140 W or 2x140 W heater element
(thermostat controlled) extra for temperatures below -25
°
C
.
Item
1
Heater element
Tabell 4-1. Heater element resistances
-25
°
C
-40
°
C
-55
°
C
70 W,
220 V,
R=691 Ohms
±
10%
X
140 W,
220 V,
R=346 Ohms
±
10%
X
X
2x140 W, 220 V,
R=173 Ohms
±
10%
X
X
70 W,
110 V,
R=173 Ohms
±
10%
X
140 W,
110 V,
R=86 Ohms
±
10%
X
X
2x140 W, 110 V,
R=43 Ohms
±
10%
X
X
1
3
2
5 4
6
1
B20010
Summary of Contents for SF6 LTB 245E1 BLG 1002A
Page 1: ...Product Manual 1HSB435416 2 en Rev 1 LTB 245E1 BLG 1002A 3 pole operation ...
Page 92: ...ABB Switchgear SF6 Circuit Breaker Circuit breakers HPL and LTB 1HSB445409 1 en0 Lubricants ...
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