Toshiba VK Series - User Manual

Document
:
GF
077601
-
B
TOSHIBA
INSTRUCTIONS
INSTALLATION
-
OPERATION
-
MAINTENANCE
Type
VK
&
HVK
Series
Vacuum
Circuit
Breakers
5
-
15
kV
APPLICABLE
TYPE
FORMS
(
1200
A
)
(
2000
A
)
(
3000
A
)
VK
-
6
M
32
A
HVK
-
6
M
32
A
VK
-
6
M
40
A
HVK
-
6
M
40
A
VK
-
8
M
40
A
HVK
-
8
M
40
A
VK
-
10
M
25
A
2
HVK
-
10
M
25
A
2
VK
-
10
M
40
A
HVK
-
10
M
40
A
VK
-
6
M
50
VK
-
10
M
50
VK
-
6
P
32
A
HVK
-
6
P
32
A
VK
-
6
P
40
A
HVK
-
6
P
40
A
VK
-
8
P
40
A
HVK
-
8
P
40
A
VK
-
10
P
25
A
2
HVK
-
10
P
25
A
2
VK
-
10
P
40
A
HVK
-
10
P
40
A
VK
-
6
P
50
VK
-
10
P
50
VK
-
8
Q
40
VK
-
10
Q
40
VK
-
6
Q
50
VK
-
10
Q
50
NOTES
:
1
)
The
designation
of
H
before
VK
(
ie
.
HVK
)
denotes
that
the
circuit
breaker
unit
was
assembled
in
the
USA
using
domestic
and
foreign
components
.
All
references
to
model
numbers
in
this
manual
will
be
by
the
numbers
following
the
VK
-
and
HVK
-
.
2
)
This
manual
was
written
for
the
Toshiba
type
form
circuit
breakers
listed
on
this
page
used
in
conjunction
with
Toshiba
cells
.
For
circuit
breakers
utilized
in
the
conversion
of
other
equipment
,
a
supplemental
instruction
manual
should
be
obtained
from
the
conversion
manufacturer
.
i
\
Issued
2
/
95
.
Supersedes
GFO
770
O
1
-
A
Dated
12
/
94
.
Courtesy of NationalSwitchgear.com

Summary

Safety and Operator Qualifications

Important Safety Messages

Understanding signal words like DANGER, WARNING, and CAUTION for safety information.

Safety Codes and Standards

Adhering to applicable codes, OSHA, IEEE, NEMA, and NFPA standards for safety.

Qualified Operator Requirements

Criteria for personnel installing, operating, or servicing the equipment safely.

Receiving, Handling, and Storage

Acceptance Inspection and Unpacking

Procedures for inspecting equipment for damage and completeness upon receipt.

Lifting and Handling Procedures

Safe techniques for lifting and moving circuit breakers, including warnings.

Storage Precautions

Guidelines for storing circuit breakers to prevent damage from environmental factors.

Installation Guidelines

Service Conditions and Ratings

Requirements for installation environment, temperature, altitude, and system ratings.

Lifting for Installation

Specific procedures and safety warnings for installing breakers using a portable lifter.

Moving Breaker within the Cell

Steps for inserting and removing the circuit breaker into/from the switchgear cell.

Operation and Control

Manual Operation Procedures

Step-by-step guide for manually charging, closing, and tripping the circuit breaker.

Electrical and Control Circuit Operations

Procedures for electrical operation and detailed control circuit sequences for closing, charging, and tripping.

Mechanism Operation Details

Explanation of the internal mechanism's actions during closing, charging, tripping, and trip-free states.

Maintenance and Inspection

Maintenance Program and Records

Establishing a routine maintenance schedule and keeping detailed records of work performed.

Inspection Types and Intervals

Different types of inspections (visual, periodical, detail) and their recommended frequencies.

Key Maintenance Procedures

Procedures like wipe measurement, vacuum checks, and troubleshooting.

Component Replacement Guide

Guidance on replacing common parts like auxiliary switches, coils, control boards, and fuses.

Conversions and Special Devices

Conversion Considerations

Factors to evaluate when incorporating Toshiba components into existing switchgear.

Automatic Spring Discharge Handling

Procedures and recommendations for managing automatic spring discharge during conversions.

VMD Functionality

Information on the Vacuum Circuit Breaker Monitoring Device (VMD) for safety during operations.

Toshiba VK Series Specifications