Siemens 3AH35-SE Series, Инструкция по эксплуатации

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6
Installation checks
and functional tests
Introduction
This section provides a description of the
inspections, checks and tests to be performed
on the circuit breaker stored-energy module
only.
The inspections and checks in this section are
to be performed with the circuit breaker
disconnected and isolated from primary
(high-voltage) power sources.
Inspections, checks and tests
without control power
Inspections, checks and tests without
control power
Vacuum circuit breakers are normally
shipped with their primary contacts open
and their springs discharged. However, it is
critical to first verify the discharged
condition of the spring-loaded mechanisms
after de-energizing control power.
De-energizing control power
To de-energize control power in the outdoor
circuit breaker, open the control power
disconnect device in the relay and control
compartment.
The control power disconnect device is
normally a fused knife switch. Opening the
knife de-energizes control power to the
circuit breaker operating mechanism. In
some outdoor circuit breakers, a molded-
case circuit breaker or pullout-type fuse
holder may be used in lieu of the fused knife
switch. Opening the fused knife switch, or
molded-case circuit breaker, or removing the
pullout-type fuse holder accomplishes the
desired result: control power is
disconnected.
Spring-discharge check
Perform the spring-discharge check after
de-energizing control power. This check
assures both the tripping and closing springs
are fully discharged. Refer to Figure 1:
Operator panel controls of circuit breaker
and manual charging of closing spring on
page 8.
1. Press red Trip pushbutton.
2. Press black Close pushbutton.
3. Press red Trip pushbutton again.
4. Verify spring-condition indicator shows
DISCHARGED.
5. Verify main contact status indicator
shows OPEN.
Manual-spring charging check
1. Insert the manual-spring charging crank
into the manual-charge handle socket
(refer to Figure 1: Operator panel
controls of circuit breaker and manual
charging of closing spring on page 8).
Turn the crank clockwise (about 48
revolutions) until the spring-condition
indicator shows the closing spring is
CHARGED.
2. Repeat the spring-discharge check.
3. Verify the springs are DISCHARGED and
the circuit-breaker primary contacts are
OPEN by indicator positions.
As-found and vacuum-integrity check
tests
Perform and record the results of both the
as-found insulation test and the vacuum-
integrity check (dielectric) test. Procedures
for these tests are described in the
Maintenance section of this instruction
manual beginning on page 22.