Siemens 3AF 01 Manual de instrucciones - Página 13

Navegue en línea o descargue pdf Manual de instrucciones para Equipamiento industrial Siemens 3AF 01. Siemens 3AF 01 24 páginas. Outdoor vacuum switchgear

Imprimir página

(3)

Any locking washer or gasket loosened or

exposed during assembly must be replaced.

The following sequence should be followed :

(i)

In line with the foundation plan shown in the

G.A. drg., the foundation pockets are made.

Grout the foundation bolts and cure. Ensure the

foundation area is leveled for proper seating of

the circuit-breaker.

(ii)

Mount the support structure on to the grouted

bolts, fully tighten the foundation bolt

hardware.

(iii)

The pull rod length is factory preset. Do not

change it.

(iv)

The contacts of the vacuum interrupter are in

the open position during transport.

(v)

Place the breaker assembly (P-2, Fig. 7) over the

support structure and fix the assembly with the

hardware supplied

(M12 x 50 Bolt). Take care to strictly follow the

lifting instructions, with special care of porcelain

insulators.

6.5

Electrical connections

(i)

Earthing

Connect the vacuum circuit-breaker to the

appropriate high-voltage protective earth by

means of the suitably marked earth terminals on

the base frame using flat copper, copper cable

or hot galvanized steel strip.

(ii)

Drill suitable holes on the gland plate. Run the

control cables into the mechanism housing

through the cable glands which will be mounted

on the gland plate (K; Fig. 1). Connect the

protective conductors to the earthing terminals

provided. Connect the auxiliary supply as per

the approved schematic/wiring diagram.

CAUTION

When the supply voltage is applied, the motor

immediately charges the closing spring.

(iii)

Cleaning

WARNING

For safety reasons, cleaning may be taken up only

when the vacuum circuit-breaker is in the open state,

closing spring discharged.

Non-observance can result in personal injury.

Use only warm water with a mild liquid household

detergent added as cleaning agent.

(iv)

Using 5kV kit, megger the system to confirm

insulation resistance of min. 100 M ohms.

(v)

Terminal connectors and/or Flat bar

connections:

Prior to fitting the conductors, position them to ensure

that they have smooth contact with their connecting

parts and are fully aligned with the holes of terminal

pads.

Rub the contact faces to be bolted together with

crisscrossing strokes using a wire brush or emery cloth (for

metal grain size 150) until bright metal shows, and then

wipe with a clean rag. Thinly grease the bright contact

faces with acid-free Vaseline (e.g. Shell Vaseline 8420)

and bolt them together immediately.

Differing contact materials (AI/Cu) must not be worked

with the same cleaning tool.

Use the M12 nuts and bolts of strength class 8 and

corresponding spring elements and plain washers.

Use cupal sheets while mounting copper terminal

overhead connectors to avoid galvanic corrosion with a

aluminium alloy top and bottom flanges.