Siemens 15-FSV-500 설치 운영 및 유지보수 - 페이지 20

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Interrupter/Operator

Description

50 1

Open1ng for handcrank

50 2

Charging mechanism

50 3

Charg1ng flange

50 3 1

Driver

50 4

Motor

Close button

53 1

Spring Release Coil

55 1

L 1 nkage

Control lever

55 2

6 2

Clos1ng spring

62 1

Charg1ng shaft

Crank

6 2 . 2

62 3

Cam

Lever

6 2 5

62 5 1

Pawl roller

Latching Pawl

6 2 5 2

Dnve lever

6 2 6

62 8

Trip free Coupl1ng rod

Figure 10

Operating Mechanism, Details of Closing Spring Charging Components

Construction

The essential parts of the operating mechanism are shown in

Fig. 9. Its actuation is descri bed u nder "Operator Sequential

Operation Diag ram" on page 17.

Indirect Releases (Tripping Coils)

The shunt releases convert the electrical tripping pulse into

mechanical energy, it's function being to release the tripping

spring . The undervoltage release may be manually actuated

by a make or a break contact. In the make contact case, its

coil is shorted out, built-in series resistors l i miting the cu rrent.

Motor Operating Mechanism

The spring charging motor (50 9) is bolted to the charging

mechanism (50.2) gear box installed in the mechanism hous

ing. Neither the charg ing mechanism nor the motor require

any serving.

Auxiliary Switch

The auxiliary switch is actuated by the breaker shaft.

Mode of Operation

The operating mechanism is of the stored-energy trip free type,

i . e . the charging of the s pring is not automatically followed by

the contacts changing position, and the closing function may

be overridden by a trip command at any time.

55 2

6 2 1

62 2

55 1

6 2

50 2

50 3

50 3 1 62 3

62 5

50 1 50 4

6 2 . 8

6 2 6

When the stored-energy mechanism has been charge

instant of operation can be chosen as desired .

The mechanical energy for carrying out an "open-close-open "

sequence for auto-reclosing d uty is stored in the closing and

tripping s p rings.

Charging

The details of the closing spring charging mechanism are shown

in figures 9, 10, 11 and 12. The charging shaft, (62.1 ) , is sup

ported in the charging mechanism, (50.2), but is not coupled

mechanically with the charging mechanism. Fitted to it are the

crank, (62.2), at one end and the cam , (62.3), together with

lever, (62.5), at the other.

When the charg ing mechanism is actuated by hand with a

hand crank opening or by a motor, the flange, (50.4), the flange.

50.3, turns until the d river, (50.3.1 ) , locates in the cutaway part

of cam disc, (62 3), thus causing the charging shaft to follow.

The crank, (62.2), charges the closing s p ring (62). When this

has been fully charged the crank actuates the linkage, (55.1 ) ,

via control lever, (55.2), for the "closing s p ring charged" indi

cator, (55), and actuates the limit switches, (50.4.1 ), for inter

ru pting the motor supply. At the same time, the lever (62.5) at

the other end of the charging shaft i s securely locked by the

latching pawl (62. 5.2). When the closing spring is being

charged, cam disc, (62.3), follows idly, i.e. it i s brought into

position for closing .

Page 15

62 5 2

62 5 1

5 3

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