Powell Powlvac asd User manual

IB-65100 PowlVac® ASD

27kV & 38kV Vacuum Circuit Breaker

27kV & 38kV Circuit Breaker with

Automatic Secondary Disconnect

PowlVac® ASD 27kV & 38kV Vacuum Circuit Breaker

IB-65100

This page is intentionally left blank.

IB-65100

Contact Information

Powell Electrical Systems, Inc.

www.powellind.com

info@powellind.com

Service Division

PO Box 12818

Houston, Texas 77217-2818

Tel: 713.944.6900

Fax: 713.948.4569

PowlVac® ASD 27kV & 38kV Vacuum Circuit Breaker

IB-65100

Signal Words

As stated in ANSI Z535.4-2002, § 4.13-4.13.3 the

signal word is a word that calls attention to the

safety sign and designates a degree or level of

hazard seriousness. The signal words for product

safety signs are “Danger”, “Warning”, and

“Caution”. These words are defined as:

DANGER indicates an imminently hazardous

situation which, if not avoided, will result in

death or serious injury.

DANGERDANGER

WARNING indicates a potentially hazardous

situation which, if not avoided, could result in

death or serious injury.

WARNINGWARNING

CAUTIONCAUTION

CAUTION indicates a potentially hazardous

situation which, if not avoided, may result in

minor or moderate injury.

Not stated in ANSI Z535.4-2002, § 4.13-4.13.3

as a signal word but used in this manual is

“IMPORTANT”. This is defined as:

IMPORTANT indicates a section of the manual

covering a non hazardous situation, but

one where Powell feels proper attention is

warranted.

IMPORTANTIMPORTANT

Qualified Person

For the purposes of this manual, a qualified person,

as stated in NFPA 70®, is one familiar with the

construction and operation of the equipment and

the hazards involved.

In addition to the above qualifications, one must

also be:

1) trained and authorized to energize,

deenergize, clear, ground, and tag circuits

and equipment in accordance with

established safety practices.

2) trained in the proper care and use of

personal protective equipment (PPE)

such as rubber gloves, hard hat, safety

glasses or face shields, flash clothing, etc.,

in accordance with established safety

practices.

3) trained in rendering first aid if necessary.

IB-65100

Contents

Ch 1 General Information.................................................................................................1

A. SCOPE ................................................................................................................................................................2

B. PURPOSE.............................................................................................................................................................2

C. INSTRUCTION BULLETINS AVAILABLE ELECTRONICALLY.....................................................................................................2

Ch 2 Safety ........................................................................................................................3

A. SAFE WORK CONDITION .........................................................................................................................................3

B. SAFETY GUIDELINES ...............................................................................................................................................3

C. GENERAL.............................................................................................................................................................3

D. SPECIFIC ..............................................................................................................................................................4

E. X-RAYS ..............................................................................................................................................................4

F. SAFETY LABELS .....................................................................................................................................................5

Ch 3 Equipment Description.............................................................................................6

A. GENERAL.............................................................................................................................................................6

B. THE STORED ENERGY MECHANISM ............................................................................................................................6

1) Mechanical Description.......................................................................................................................................................... 6

2) Electrical Description.............................................................................................................................................................17

C. RACKING MECHANISM ......................................................................................................................................... 19

1) General Description...............................................................................................................................................................19

2) Circuit Breaker Racking Mechanism..................................................................................................................................20

D. CIRCUIT BREAKER COMPARTMENT INTERFACES ........................................................................................................... 20

1) Primary Disconnecting Contacts........................................................................................................................................20

2) Secondary Disconnecting Contacts ..................................................................................................................................21

3) Mechanism Operated Cell (MOC) Switch .........................................................................................................................21

4) Ground Connection ...............................................................................................................................................................21

E. VACUUM INTERRUPTER CONNECTIONS ..................................................................................................................... 21

F. OPERATING SOLENOIDS ....................................................................................................................................... 22

G. ANTI-PUMP RELAY ............................................................................................................................................. 22

H. MOTOR CUTOFF SWITCH...................................................................................................................................... 22

I. VACUUM INTERRUPTERS ....................................................................................................................................... 22

J. SHUTTER OPERATOR ........................................................................................................................................... 22

K. TEST POSITION INTERLOCK .................................................................................................................................... 22