7 | Installation
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8DJH • Installation and Operating Instructions • Version 11 • 500-8384.9
7.21 Electrical connections
7.21.1 Safety instructions
DANGER
Live parts
Touching live parts leads to a life-endangering electric shock. Observe the Five Safety Rules:
⇨ Isolate.
⇨ Secure against reclosing.
⇨ Verify safe isolation from supply.
⇨ Earth and short-circuit.
⇨ Cover or barrier adjacent live parts
NOTICE
Inappropriate installation of the cable plug
Insufficient electrical contact, abrasion, damage or pollution of the cable plugs can cause an
internal arc during operation.
⇨ All assembly work at the bushings must be carried out with particular care.
⇨ Avoid damaging the contact surfaces and the silicone surfaces.
⇨ Avoid damages caused by the threaded stud while pushing on the cable plugs.
⇨ Do not mount plug sets in bent or twisted manner.
⇨ Do not exceed the maximum tightening torque of the bushings (50 Nm).
⇨ Mount the cable plugs according to the manufacturer's stipulations. If there are no
manufacturer stipulations, please contact the Siemens Service Hotline.
⇨ Observe extreme cleanliness. No smoking.
NOTICE
Feeder without connection cables
A switchgear without installed connection cables (e.g. spare feeder) can cause an internal
arc during operation.
⇨ Install surge-proof caps at the cable connection.
⇨ Alternatively, switch the three-position disconnector or three-position switch-
disconnector of the spare feeder to EARTHED position, and lock it.
NOTICE
Remove the protection ring
A white plastic protection ring may be assembled on the outside-cone bushing type C. The
protection ring serves as a stop for the plug. Removing the protection ring can cause
damage at the connection of the capacitive voltage detecting system.
⇨ Do not remove the protection ring.
Fig. 123:
Protection ring at the bushing
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