© ABB Ltd. - 1
01-04-06 -
PRODUCT
PRESENTATION
VHA PANEL WITH
HPA12 CIRCUIT
BREAKER
ABB
© ABB Ltd - 2
VHA 12 PANEL

Designed and type tested to
meet requirements of IEC 298
& 694 / IS:3427

Air insulated indoor switchgear

Metal clad construction

Internal arc tested

IP4X degree of protection
externally and IP2X between
compartments

Independent exhaust vents for
all HT compartments
ABB
© ABB Ltd - 3
VHA 12 PANEL

Integral Earthing Switch
optional

Normal service conditions: Min
ambient temp:-5oC, Max
ambient temp:+40oC

Up to 3000A in panel without
forced cooling

Quality System CertificationISO 9001

Environmental Management
System- ISO 14001
ABB
© ABB Ltd - 4
BREAKER COMPARTMENT

Cassette mounted breaker
with isolated position on
cubicle front door

Racking in/out of breaker from
test to service position and
vice-versa with cubicle door
closed only

Mechanical interlock to
prevent racking in/out of
breaker, when breaker is in
closed position

Live parts covered by
automatic shutters when
breaker is racked out
ABB
© ABB Ltd - 5
METERING COMPARTMENT

Metering compartment with
numerical/static/electromagnetic relays, indicating
meters, lamp and control
switches

Protection and measuring
apparatus customized as per
requirement
ABB
© ABB Ltd - 6
CABLE AND CT COMPARTMENT

Spacious construction to
accommodate 1 set of CTs
and 2 runs of cables

Option of rear extension to
accommodate extra CTs or
cables

Adequate height for cable
termination
ABB
© ABB Ltd - 7
PT COMPARTMENT

Withdrawable line PT provided
in the breaker panel

Removable fuses mounted on
the PT

Safety shutters between PT &
Cable compartment close
automatically on PT
withdrawal
ABB
© ABB Ltd - 8
BUSBAR COMPARTMENT

Spacious busbar compartment
for adequate air clearances

Option for busbar insulation
available

Option for shrouds on joints
available
ABB
© ABB Ltd - 9
HPA BREAKER

The HPA type circuit breaker is
designed and tested to meet
requirements of IEC 56 / IS :
13118

SF6 gas used as insulation
and arc interruption medium

Arc control and extinction
achieved by puffer principle

Capable of interrupting small
magnetizing and capacitive
currents
ABB
© ABB Ltd - 10
HPA BREAKER

Features of operating
mechanism

O-C-O operation without
recharging

Closing spring charged by
motor in less than 15secs

Electrical anti-pumoing

Provision for manual
recharging

Synchronisation and fast auto
reclosure duty
ABB
HPA BREAKER

The HPA series of CB are designed and type tested to meet the
requirements of IEC-60056 / IS:1318

The HPA series of CB use SF6 gas as insulating and arc
interruption medium

Arc interruption and control are achieved by puffer principle

Short arc duration followed by rapid dielectric recovery

Long electrical life, as the interruption system develops low arc
energy and contact wear is minimal

Long mechanical life with study and proven operating
© ABB Ltd - 11
mechanism
- 10000 operations at no load
- 10000 operations at rated current
ABB
© ABB Ltd - 12
HPA BREAKER

Operationally safe and reliable in wide range of operating
temperature
-5o to +40o c

Capable of interrupting small magnetizing and capacitive currents

Compact design with relatively light weight construction

Features of operating mechanism

O-C-O operation without recharging

closing spring charged by motor in less than 15 secs.

electrical anti-pumping

provision for manual recharging

synchronization and fast auto-reclosure duty
ABB
© ABB Ltd - 13
VHA PANEL CROSS SECTIONAL DWG
ABB
VHA 12 PANEL
© ABB Ltd - 14
TECHNICAL DETAILS
Description
Unit
Rating
Voltage
kV
12
Frequency
Hz
50
Current
A
630, 1250, 1600, 2000,
2500, 3000, 4000
Short time withstand
current (for 3 secs)
kA
40
Peak withstand current
kAp
100
Insulation level
kVrms/kVp
28/75
WidthxDepthxHeight
mm
800x1370x2340
Weight with breaker (approx.) kg
1000
Degree of Protection-Enclosure
IP4X
ABB
HPA12 CIRCUIT BREAKER
TECHNICAL DETAILS
Description
Unit
Rating
Voltage
kV
12
Frequency
Hz
50
Current
A
1250, 1600, 2000, 2500, 3150
Breaking capacity
kA
40
Short time withstand
current (for 3 secs)
kA
40
Peak withstand current
kAp
100
Insulation level
kVrms/kVp
28/75
Operating sequence
© ABB Ltd - 15
Weight (approx.)
O-3min-CO-3min-CO/
O-0.3secs-CO-3min-CO
kg
190-225
ABB
INSTALLATIONS
OVER 25,000 PANELS INSTALLED
MAJOR INSTALLATIONS AT:

POWER PLANTS

DISTRIBUTION UTILITIES

STEEL PLANTS

CEMENT PLANTS

REFINERIES
VARIOUS INDUSTRIES & INFRASTRUCTURE PROJECTS
© ABB Ltd - 16

ABB
SUCCESFULL INSTALLATIONS IN GENEARATIONS
Major installations of VHA 12S +HPA
POWER PLANT LOCATION
SF6 SWGR INSTALLED

MSEB ( CHANDRAPUR UNIT IV V &VII ,KORADI) (1989,95,99)- 593

NTPC ( VINDHYACHAL 500MW)(1995)
- 248

NTPC ( TALCHER 4 X 500MW) (1999)
- 451

APSEB ( RAYALSEEMA 2 X 210 MW) (1998)
- 235

BSES DAHANU ( 2 X 250MW) (1994)
- 163

MPEB SGTPS (1997)
- 179

GIPCL (2 X 125 MW) (1996)
- 110
© ABB Ltd - 17
Total SF6 panels installed in Generations in India - 4100Nos
ABB’s market share in Generation is 70% !!!
ABB
HPA – Arc Interruption principle
© ABB Ltd - 19
BBBBBBBB
ABB