Panasonic PT-LW80NTU User Manual

Document: GF07Z303 Rev 1

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INSTRUCTION MANUAL

INSTALLATION - OPERATION - MAINTENANCE

HV6FS Vacuum Circuit Breakers – Fixed Type

4.8 & 7.2kV Voltage Classes

(Fast Closing)

Issued: 8/2004

APPLICABLE MODEL NUMBERS:

(Motor Operation Types)

HV6FS-MU
HV6FS-ML

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Preface

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For the Installation, Operation and Maintenance of

HV6FS Vacuum Circuit Breakers – Fixed Type

4.8 & 7.2kV Voltage Classes

(Fast Closing)

Never attempt to install, operate, maintain or dispose of this equipment until

WARNING

To contact Toshiba, address all correspondence to:
Field Service Department

Toshiba International Corporation
13131 West Little York Road
Houston, Texas 77041 USA

you have first read and understood all of the relevant product warnings and
user directions that are contained in this Instruction Manual.

or call:
[phone]

[phone]
[phone] (Canada)

Fax: [phone]
Please complete the following information for your records and retain with this manual:
Model: ___________________________________
Serial Number:_____________________________
Date of Installation:_________________________
Inspected by: ______________________________
Reference Number: _________________________

© TOSHIBA INTERNATIONAL CORPORATION, 2004

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SAFETY Page 1

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IMPORTANT MESSAGES
Read this manual and follow its instructions. Signal words such as

DANGER, WARNING and CAUTION will be followed by important safety
information that must be carefully reviewed.

DANGER

WARNING

CAUTION

NOTE Gives you helpful information

Note: The contents of this manual will not become apart of or modify the warranty policy. The
terms of which are set forth at the end of this manual.

READ SAFETY SIGNS

To avoid injury, you must read and follow all safety signs.

Indicates a situation which will result in death, serious injury, and severe
property damage if you do not follow instructions.

Means that you might be seriously injured or killed if you do not follow
instructions. Severe property damage might also occur.

Means that you might be injured if you do not follow instructions. Equipment
damage might also occur.

Keep the safety signs visible and in good shape. Never remove or cover any safety
signs.

Page 2 SAFETY

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QUALIFIED OPERATORS ONLY

Only qualified persons are to install, operate, or service this equipment according to all
applicable codes and established safety practices.

A qualified person must:

1) Carefully read the entire instruction manual.

2) Be skilled in the installation, construction or operation of the equipment and
aware of the hazards involved.

3) Be trained and authorized to safely energize, de-energize, clear, ground,
lockout and tag circuits in accordance with established safety practices.

4) Be trained and authorized to perform the service, maintenance or repair of
this equipment.

5) Be trained in the proper care and use of protective equipment such as rubber
gloves, hard hat, safety glasses, face shield, flash clothing, etc. in
accordance with established practices.

6) Be trained in rendering first aid.

SAFETY CODES

Toshiba HV6FS vacuum circuit breakers are designed and built in accordance with JIS
C 4603-1990 and JEC-2300-1985. Installations must comply with all applicable state
and local codes, adhere to all applicable National Electric Code (NFPA 70) standards
and instructions provided in this manual.

SAFETY Page 3

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DANGER

• Turn off and lock out Primary and Control Circuit Power before servicing.

• Keep all panels and covers securely in place.

• Never Defeat, Modify, or Bypass any Safety Interlocks

• Qualified Operators only

HAZARDOUS VOLTAGE will cause severe injury, death, fire, explosion and
property damage.

Page 4 TABLE OF CONTENTS

SAFETY....................................................................................................................................................1

INTRODUCTION ......................................................................................................................................7

GENERAL DESCRIPTION.......................................................................................................................8

Components..................................................................................................................................8

Indicators and Controls.................................................................................................................9

RECEIVING, INSPECTION AND HANDLING........................................................................................10

Receiving and Unpacking ...........................................................................................................10

Acceptance Inspection................................................................................................................10

Handling and Moving ..................................................................................................................11

INSTALLATION......................................................................................................................................12

Rating Verification.......................................................................................................................12

Mounting the Circuit Breaker to a Panel ..................................................................................... 13

Mounting Directly to a Shelf........................................................................................................15

Main Circuit Cable Connections..................................................................................................16

Ground Connections...................................................................................................................17

Control Circuit Connections ........................................................................................................18

PRE-ENERGIZATION CHECK ..............................................................................................................19

General .......................................................................................................................................19

Electrical Checks ........................................................................................................................19

OPERATION...........................................................................................................................................20

Manual Operation........................................................................................................................20

Electrical Operation.....................................................................................................................21

Undervoltage Trip........................................................................................................................25

MAINTENANCE .....................................................................................................................................26

Maintenance Program.................................................................................................................26

Maintenance Record...................................................................................................................26

Servicing Equipment...................................................................................................................26

Inspection and Maintenance Types ............................................................................................27

Table 1. Tightening Torques......................................................................................................27

Table 2. Check Points for Periodic Inspection ...........................................................................28

Vacuum Check............................................................................................................................30

DISPOSAL..............................................................................................................................................32

STORAGE..............................................................................................................................................33

Storage........................................................................................................................................33

Inspection During Storage...........................................................................................................33

SPECIFICATIONS..................................................................................................................................34

TABLE OF CONTENTS Page 5

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Table 3. Ratings – Manual Operation HV6FS-MU and HV6FS-ML Types ................................34

WARRANTY AND LIMITATION OF LIABILITY.....................................................................................35

Page 6

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INTRODUCTION Page 7

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It is the intent of this manual to provide a guide for safely installing, operating and maintaining Toshiba
vacuum circuit breakers. This manual consists of a section of general safety instructions and is marked
throughout with warning symbols. Read this manual thoroughly before installation, operation and
maintenance of this equipment.

This manual and all accompanying drawings should be considered a permanent part of the equipment.
They should be readily available for review and reference at all times. This manual is not intended to
cover all details, combinations, or variations of the equipment. Always refer to drawings accompanying
the equipment for additional details.

All safety warnings must be followed to ensure personal safety. General safety instructions are
found on pages 1 through 3. Read and save these instructions for future reference.

Follow all precautions to attain proper equipment performance and longevity.
Dimensions shown in the manual are in metric and/or their English equivalent.

This manual is divided into major sections of interest, as follows:
GENERAL DESCRIPTION – Provides a description of the equipment, information on major

components and how they function, plus rating information.
RECEIVING, INSPECTION AND HANDLING – Describes procedures for receiving, unpacking,

inspecting, handling, lifting and moving the circuit breaker.
INSTALLATION – Provides information on installing the circuit breaker in the switchgear cell along with

breaker racking procedures.

PRE-ENERGIZATION CHECK – Provides a checklist for preparing the equipment for energization.
OPERATION – Provides information on manual and electrical operation of the circuit breaker, circuit

diagrams, operating sequence description and operation of circuit breaker optional accessories.
MAINTENANCE – Lists the basic maintenance procedures for this equipment necessary for safe and

reliable operation.

DISPOSAL – Lists procedures for the safe disposal of the equipment when the service life has expired.
STORAGE – Provides guidelines for storing new equipment for an extended period of time.
SPECIFICATIONS – Covers ratings and other specifications of the circuit breaker.
WARRANTY AND LIMITATION OF LIABILITY – Details Toshiba International Corporation’s standard

warranty terms.

Page 8 GENERAL DESCRIPTION

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The Toshiba HV6FS vacuum circuit breakers
described in this manual are suitable for use on
systems of 4.8kV and 7.2kV voltage classes that
require interrupting ratings of 16kA and 14kA
respectively and a continuous current rating of
630A. The circuit breakers are intended for use
in limited applications requiring small physical
size and low maintenance.

These breakers are designed for fixed panel
mounting and are available with upper main
circuit terminals (MU type) or rear terminals (ML
type).

The breakers are available as both manual and
motor-operated types. Motor-operated breakers
use a motor to charge the closing springs and to
close the breaker upon command. Both types
can be tripped electrically and also include
undervoltage release.

Fig. 1 MU Type Circuit Breaker (Upper Main

Arc interruption is accomplished inside sealed
vacuum interrupters mounted on track-resistant
insulators. Vacuum interrupters use low-surge
contact materials that exhibit low current
chopping levels reducing switching overvoltages.

Circuit Terminals)

7

Fig. 1 and Fig. 2 illustrate and identify the major
components of the circuit breakers.

COMPONENTS LEGEND:

1) Manual charging handle

2) Manual trip lever

3) On-Off indicator

4) Spring charge indicator

5) Operations counter

6) Secondary control circuit terminal block

7) Main circuit terminals

8) Auxiliary switch

9) Grounding terminal

10) Manual close lever

6

3

4

10

2

51

Fig. 2 ML Type Circuit Breaker (Rear Main
Circuit Terminals)

9

8