vha panel with hpa circuit breaker - tradeindia · 2015-03-02 · © abb ltd. - 1 01-04-06 - vha...
TRANSCRIPT
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VHA PANEL WITH HPA12 CIRCUIT
BREAKER
PRODUCT PRESENTATION
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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
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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 Certification- ISO 9001
Environmental Management System- ISO 14001
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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
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METERING COMPARTMENT
Metering compartment with numerical/static/electro-magnetic relays, indicating meters, lamp and control switches
Protection and measuring apparatus customized as per requirement
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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
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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
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BUSBAR COMPARTMENT
Spacious busbar compartment for adequate air clearances
Option for busbar insulation available
Option for shrouds on joints available
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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
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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
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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
mechanism
- 10000 operations at no load
- 10000 operations at rated current
HPA BREAKER
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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
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VHA PANEL CROSS SECTIONAL DWG
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TECHNICAL DETAILS
Description Unit Rating
Voltage kV 12
Frequency Hz 50
Current A 630, 1250, 1600, 2000, 2500, 3000, 4000
Short time withstand kA 40 current (for 3 secs)
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
VHA 12 PANEL
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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 kA 40 current (for 3 secs)
Peak withstand current kAp 100
Insulation level kVrms/kVp 28/75
Operating sequence O-3min-CO-3min-CO/O-0.3secs-CO-3min-CO
Weight (approx.) kg 190-225
HPA12 CIRCUIT BREAKER
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INSTALLATIONS
OVER 25,000 PANELS INSTALLED MAJOR INSTALLATIONS AT: POWER PLANTS DISTRIBUTION UTILITIES STEEL PLANTS CEMENT PLANTS REFINERIES VARIOUS INDUSTRIES & IN-FRASTRUCTURE PROJECTS
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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
Total SF6 panels installed in Generations in India - 4100Nos
ABB’s market share in Generation is 70% !!!
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HPA – Arc Interruption principle
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