Installation
96/214 Revision 06 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • 864-5091.9
26 Installing voltage transformers
DANGER
The voltage transformer can explode!
➭ If the voltage transformer is short-circuited, there is risk of explosion!
Check the voltage transformer circuits up to the m.c.b. or the fuse for short-circuits.
DANGER
High voltage! Danger! Before starting installation work at the voltage transformers, the busbar
must have been isolated and earthed.
➭ Isolate and earth the busbar.
Verify safe isolation from supply.
ATTENTION
Sensitive parts of the switchgear may be damaged during installation work at the busbar and
the busbar housings.
➭ While working at the busbars or the busbar housings, prop up only on the aluminum
housings and the frame.
➭ Do not prop up on sensitive parts of the switchgear like gas pipes, bursting discs, shafts,
etc.
ATTENTION
While working on metal-coated voltage transformers, the coating may be scratched or
damaged. Then, the voltage transformers cannot be touched anymore.
➭ Work carefully while mounting metal-coated voltage transformers.
➭ Take care not to scratch or damage the metal coating.
ATTENTION
Risk of partial discharges at the voltage transformer bushings due to pollution.
➭ Clean all bushings at the panel at the voltage transformer carefully before starting
installation work.
➭ Observe extreme cleanliness while working.
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