Effective 11/97 Supersedes I.L. 3778A20A dated March, 1993
I.L. 3778A74H01
Type VCP-W Manual Ground and Test Device (Complex)
Figure 1: Type VCP-W Manual Ground and Test Device
TABLE OF CONTENTS
1-0
Introduction ................................................ 1
1-1
Description ................................................. 1
1-2
Operation ................................................... 2
WARNING
READ AND UNDERSTAND THESE INSTRUCTIONS
BEFORE ATTEMPTING TO USE THIS DEVICE.
IMPROPER USE CAN RESULT IN DEATH, BODILY
INJURY AND/OR PROPERTY DAMAGE.
CAUTION
BECAUSE OF THE UNIQUE APPLICATION AND
VAST VARIETY OF SYSTEM AND USER
REQUIREMENTS, SPECIFIC OPERATING
PROCEDURES MUST BE DEVELOPED BY THE
USER. FAILURE TO DEVELOP THESE
PROCEDURES COULD LEAD TO IMPROPER USE
OR OTHER MORE SERIOUS CON-SEQUENCES.
1-0 INTRODUCTION
Type Vac Clad-W switchgear assemblies are designed
with all the bus work completely insulated for safety.
Since the current carrying parts are not readily
accessible, type VCP-W Manual Ground and Test
Device is designed for insertion into the breaker
compartment to gain access to the primary stationary
contacts. It provides a convenient means to:
1. Ground a circuit for maintenance work;
2. Apply potential for cable testing; and,
3. Access both bus and line circuits for “phasing out”.
tests.
CAUTION
BECAUSE OF THE UNIQUE APPLICATION AND
VAST VARIETY OF SYSTEM/USER
REQUIREMENTS, SPECIFIC SAFE OPERATING
PROCEDURES FOR THE USE OF THIS DEVICE
MUST BE DEVELOPED BY THE USER.
1-1 DESCRIPTION
The device consists of a drawout element that can be
inserted into a circuit breaker compartment in the same
manner as a type VCP-W circuit breaker. It includes six
terminals and ground bus connections. Each terminal is
isolated from each other and the ground bus connection
by insulating barriers. The upper and lower terminals are
accessible upon opening the respective front hinged
door. The ground connection is located in the lower front
section of the device.
Vac Clad-W switchgear is a two-high arrangement. In
the lower compartment the top terminals normally
connect to the main bus and the bottom terminals
normally connect to the incoming line or feeders. In an
upper compartment, the opposite normally holds true,
i.e., the top terminals connect to the incoming line or
feeders and the bottom terminals connect to the main
bus. This must be verified for each application. Because
of this two-high arrangement, the bus and the line
positions of the grounding and test device terminals will
vary depending upon whether the device is used in an
upper or lower compartment. Therefore,
it is most
important that the bus or line terminals be correctly
identified for each compartment before using this
device.
Summary of Contents for VCP-W
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