GE PK-2 Instructions

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INSTRUCTIONS
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The Type PK -2 test blocks and plugs are used
to test switchboard mounted instruments, meters,
and relays when in an electric circuit or by the use
of
a separate source of power. They are available
in either four or six poles and are back connected.
The contacts have line contact.
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The PK-2 test blocks and plugs are shipped in
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i n d i v i d u a l cartons. In the carton. with the test
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block, una sse mbled in a s e p a r a t e container, are
sufficient auxiliary contacts for a n y combination
shown in Fig. 8 and 9. Also p a c k e d in the sep-
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The block can be mounted on the front surface
of panels 1/8 inch to 2 inches thick or on the rear
surface of a p a n e
(see Fig. 1 and 2}. With both methods of mounting,
the cover and test plug are inserted from the front
of the panel.
Before m o u n t i n g on the pane
Fig.
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TEST BLOCKS
MOUNTING
1
not more than 1/8 inch thick
I
Mounting on Front of Steel Panel
These instructions do not purport to cover all details or variations in equipment nor to provide for every possible
contingency to be mel in connection with installation, operation or maintenance. Should further information be desired
or should porticular problems arise
be
referred to the G-ral Electric Company.
GENERAL
AND
TYPE PK-2
INTRODUCTION
able of carrying 10 amperes at 250 volts continu­
ously. They are not intended to interrupt any cur­
rent, but will satisfactorily open the circuit
potential coil and transfer the current coil
struments, meters, or relays.
RECEIVING
arate c o n tai n e r are the n u t s and washers for
the studs; m o u n t i n g screws, washers, and nuts
for m o u n t i n g the test block on steel panels; and
jumpers a n d holding screws for the a uxi l i a r y
contacts.
INSTALLATION
contacts should be assembled according to the com­
bination required, as shown in Fig. 8 and 9.
auxiliary contacts. These a r e fastened as shown
by the No.4-48, 5/16 inch round-head screws which
pass through the auxiliary contacts and are threaded
into the inserts in the bottom
iary contact (1, Fig. 3 ), is used to prevent circuit
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the auxiliary interruption when the cover !s removed. This type
Fig.
which
are not covered sufficiently for the purchaser's purposes, the matter should
.
PLUGS
The Type PK-2 test blocks and plugs are cap­
Fig. 3 shows a composite assembly of all the
2
Semi-Flush Mounting on 1/8-inch Steel Panel
ELECTRIC
GEH-1023C
of
a
of
in­
of
the block. Auxil­
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