Siemens 5-GMI-350 - Interrupter;Operator Description; Vacuum Interrupters and Primary Disconnects

Installation
Checks
&
Initial
Functional
Tests
Page
7
7
.
Perform
the
Spring
Discharge
Check
again
.
Verify
that
the
closing
springs
are
discharged
and
the
primary
contacts
of
the
GMI
circuit
breaker
are
open
.
Final
Mechanical
Inspections
without
Control
Power
1
.
Make
a
final
mechanical
inspection
of
the
circuit
breaker
.
Verify
that
the
contacts
are
in
the
Open
position
,
and
the
closing
springs
are
Discharged
.
2
.
Check
the
upper
and
lower
primary
studs
and
contact
fingers
shown
in
Figure
9
.
Verify
mechanical
condition
of
finger
springs
and
the
disconnect
studs
.
3
.
Coat
movable
primary
contact
fingers
,
Figure
9
,
and
the
secondary
disconnect
contacts
,
Figure
24
,
with
a
light
film
of
Siemens
Contact
Lubricant
No
.
15
-
171
-
370
-
002
.
4
.
The
GMI
vacuum
circuit
breaker
is
ready
for
installation
into
its
assigned
cubicle
of
the
metal
-
clad
switchgear
.
Refer
to
removal
procedures
and
re
-
install
the
circuit
breaker
into
its
switchgear
.
5
.
Refer
to
Switchgear
Instructions
for
functional
tests
of
an
installed
circuit
breaker
.
I
Figure
9
.
Primary
Disconnect
Studs
and
Contact
Fingers
.
Courtesy of NationalSwitchgear.com