ABB SF6 LTB 245E1 BLG 1002A - Heater Element

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%
XX
2x140 W, 220 V, R=173 Ohms ±
10%
XX
70 W, 110 V, R=173 Ohms
±
10%
X
140 W, 110 V, R=86 Ohms
±
10%
XX
2x140 W, 110 V, R=43 Ohms ±
10%
XX
1
3
2
5
4
6
1
B20010