Siemens 3KA Manuel d'utilisation - Page 2

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Switch-disconnectors

Operating Instructions

Read and understand these instructions before installing, operating, or maintaining the equipment.

DANGER

Hazardous voltage.

Will cause death or serious injury.

Disconnect power before working

on equipment.

Reliable functioning of the equipment is only ensured with certified components.

Maintenance in aggres-

sive environments

Cleaning

Greasing

Hints

Maintenance guide for 3KA/L/M switch-disconnectors in aggressive environments

(see also maintenance guide for switchgears)

• Switch-disconnectors 3KA/L/M are usually requiring no maintenance if working in clean rooms,

which are ventilated by clean air.

• else, for example with polluntant and dusty air, we recommend regular maintenance of the con-

tavt surfaces of the fuse lyses (fuse holders), plug lyres (for busbars), fuse knifes and disconnec-

ting blades respectively depending from the local conditions and the condition of the switch

respectively, but at least yearly.

• Maintenance means cleaning and afterwards greasing.

• Clean the switch externally from dust with dry compressed air (< 5 bar) or hoovering air.

If necessary use as an aid a brush.

• Clean the greased fuse and plug lyres as well as the fuse knifes and disconnecting blades respec-

tively from od grease with a clean, fluff free rag, which is soaked in a soft cleaner, for example

HAKU 1025/920.

• Take als a slightly scouring cleaner as utmost action for obstinate dry grease. If doing so, pay

attention, not to damage or even destroy the very fine silver layer of the lyres and the knifes.

• Let the switches dry at least 15 minutes or dry with compressed air.

• Apply sparingly grease with a brush on the contact surfaces.

• Only use "Shell Alvania RLQ2" (Siemens ident number 542 073).

• For very aggressive atmosphere we recommend "Barrierta GTE 403" from "Klüber" (purchase only

by the manufacturer: Mr. Robert Haimerl, tel. 049-89-7876-298, fax. 049-89-7876-565, mail

address: [email protected])

• Only use fuses and disconnecting blades respectively with silver-plated surface, also for replace-

ment!

• The rated current of the switch is valid for open assembly and the further conditions of IEC 60

947-3. Effects of other conditions have to be considered by the manufacturer of the switchgear.

A load is permissible, if the following temperatures are observed:

– An as good as new switch:

Terminal temperature: < 100 °C

Temperature of fuse lyre/knife: < 135 °C

--> If these temperatures are higher, actions have to be taken, to reduce the heating!

– Switch in use:

Terminal temperature: < 110 °C

Temperature of fuse lyre/knife: < 145 °C

--> If these temperatures are higher, the switch has to be replaced!

• If the switch-disconnector is only used occasionally and is exposed to aggressive ambient condi-

tions, we recommend switching the switch-disconnector on and off without any load once a week

to avoid the formation of oxidation/corrosion layers on the switching contact.

• It cannot be completely ruled out that grease gum can accumulate on the switch drive as a result

of pollutants and dust in the ambient air. However, this is only critical if the operating torque

exceeds the limits specified in the operating instructions (operating torques tested according to

IEC 60 947-3).

• Upon request, switch-disconnectors are also available with tinned contact surfaces for use in

particularly aggressive environments. However, their technical specifications are limited.

Order No.: 3ZX1012-0KA50-1AA1

3KA, 3KL, 3KM

English