Removal Of Voltage Transformers Type 4Mt7 From The Cable Feeder - Siemens 8DB10 Installation And Operating Instructions Manual

864-5091.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • Revision 06
27.3

Removal of voltage transformers type 4MT7 from the cable feeder

Fig. 119: 4MT7 voltage transformer
➭ Isolate and earth the cable feeder.
➭ Verify safe isolation from supply.
➭ Remove the voltage transformer. To do this, remove the 4 bolts of the fixing brackets at
the panel connection cover, bolt size M10.
Fig. 120: Removing the voltage transformer
ATTENTION
Risk of injury! While being removed from the bushing, the voltage transformer can detach
suddenly.
➭ Remove the voltage transformer uniformly downwards.
➭ Do not use excessive force.
Installation
① Panel connection housing
②
Inside-cone bushing for primary
terminal of transformer
③
Primary terminal at the voltage
transformer
④ Silicone adapter
⑤
Fixing bracket (fixed at the voltage
transformer housing)
⑥
4MT7 voltage transformer
⑦ Low-voltage plug connection
⑧
Inside-cone bushing for cable
⑨ Panel connection cover
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