Fabrication Shop
Turrent Punch Press
TM
ISO 9001:2008
Reg.No. RQ91/5062
OURINFRA
STRUCTURE
OUR
INFRA
STRUCTURE
Hydralic Busbar Cutting Bending Puching Machine
High Voltage HV TEST
15KM
Airport
Railway Stations 25KM
25KM
Bus Stand
TM
PENTAGON SWITCHGEAR
62/1C-4, SARKAR SAMAKULAM VIA, KUPPEPALAYAM,
COIMBATORE - 641 107.TAMILNADU. INDIA.
PHONE : 0422-6452111, 6452444, MOBILE : 09361170777, 9361180888
EMAIL : info@pentagonswitchgear.in, WEB : www.pentagonswitchgear.in
ISO 9001:2008
Reg.No. RQ91/5062
designed by www.mediawonderz.com
PENTAGON SWITCHGEAR ...Where Engineering is a way of life...
PENTAGON SWITCHGEAR
An icon of Quality Engineering
TM
Few of our valued customers includes :
OUR Profile
Various Industrial Clients in and around New Delhi Supplied through
M/s. El-Fab Engineers Pvt. Ltd, New Delhi.
M/s. Indotech Transformers Limited, Chennai.
LBS,VCB's are Supplied through M/s. Star Switchgears, Bangalore.
Various Industrial Clients and CESC in the state of West Bengal supplied through
M/s. Resitech Electricals, Kolkata.
M/S.Energy capacitors P. Ltd, Mumbai & M/s. Energy Switchgears P. Ltd, Rajapalayam.
M/s. E-Square Switchgear, Delhi.
PENTAGON SWITCHGEAR, established in the year 2005, offers quality and reliable products to the Utilities and various
Industries. We endeavor for excellence in the Electrical Industry through stringent quality measures, latest technology and
effective processes. Our vision is to become leading Switchgear Company, globally known for its capabilities to offer best designs
and engineering solutions.
11KV/33KV VCB outdoor panels supplied through M/s. Vishwa Infrastructures and Services Pvt Ltd., Hyderabad. .
VCB / LBS supplied to M/S. Universal Power Transformer, Bangalore
OLI-Motorized export to M/S. Datmel technologies BHN, Malaysia
PENTAGON SWITCHGEAR has been established by top notch engineering professionals having nearly 15 to 25 years of
experience in Switch gears, who are experts in design, manufacturing, marketing, Quality control and after sales service.
Vacuum contactor panel export to M/S. NE Power controls, Nepal
We offer the following range of products:
VCB, LBS panel supplied to M/S. KG Mills, KG Group, Coimbatore.
11 KV / 33KV, VCB Panels supplied to M/s. Crafsman Automation P. Ltd, Coimbatore.
Load Break Switches (open Execution)
: Up To 36KV/630A/26.3KA In Triple Pole Manual / Motorized Versions
11KV VCB Indoor panels supplied to M/s. Electric Field Company, Jammu for J&K Electricity Board.
Off Load Isolators (open Execution)
: Up To 36KV/1600A/26.3 KA In Single Pole/triple Pole Manual / Motorized
Versions
11KV / 33KV LBS panels supplied to M/s. LANCO Hills Technology Park Pvt. Ltd, Hyderabad.
Load Break Switch Panels -
: Indoor / Outdoor / RMU's
22KV/33KV VCB panels are exported to Nigeria
Off Load Isolator Panels -
: Indoor / Outdoor
22KV VCB panels are exported to ANGOLA
Vacuum Circuit Breakers
: Indoor/Outdoor VCB’s from 12KV/33KV, 800 /1250A/2000A, 26.3KA/40KA
Vacuum Contactor
: Open Execution, Indoor / Outdoor VC Panels (7.2KV, 400A/11KV,800A),
1pole or 3 pole
33KV Porcelain Clad VCB
: 33KV, 1250A/1600A, 25 KA
Unitized Sub-stations
: 11KV to 33KV and up to 2500KVA ( Indoor / Outdoor )
Outdoor Double Break Isolators
: 11KV,33KV,110KV,132KV and 230KV
All our Products were exhaustively type tested at CPRI.
All the products undergo stringent Quality checks to ensure high level of reliability and customer satisfaction. We have
experienced service engineers to handle the after sales service effectively.
11KV-33KV, LBS,VCB panels supplied through M/s.Vserve Energy Systems, Hyderabad
INFRASTRUCTURE
LOCATION
We have sophisticated modern machineries in our production line
up which includes, Automated lathes, Power Press, CNC Turret
Punch Press (6mm Capacity), ARC/CO2 Welding Machines, CNC
hydraulic shearing , CNC Hydraulic Bending machines, Hydraulic
Bus bar 3-in One cutting, punching and bending machine, Stud
welding machine, Spot Welding Machine etc.. for manufacturing
good quality products.
Our factory is situated in Kuppepalayam, near Annur, Coimbatore,
Tamilnadu which is well connected by Rail, Road, Air transport. It is 15
Kilometers away from Airport, 25 Kilometers away from Railway
station/ Bus stand. The nearest major cities are Cochin (175
Kilometers), Chennai (500 Kilometers), Bangalore (350 Kilometers)
TM
HT LOAD BREAK SWITCHES 12/24/36/ KV, 400-630 Amps.
33KV LBS INDOOR PANEL
LBS OUTDOOR PANEL
LBS INDOOR PANEL
MACHANICAL INTERLOCKS:
11KV LOAD BREAK SWITCH
WITH ESFT
11KV/33KV MOTORISED
LOAD BREAK SWITCH
33KV LOAD BREAK SWITCH
WITH ESFT
1.
Mechanical interlocks are provided between Main Switch and Earth Switch in such a way, the Earth Switch can be closed only when the
main switch is in open condition and vice versa.
2.
Access to the HT HRC cases is not possible when the Main Switch is in On Condition.
3.
Interlocks are provided in such a way that the operating handle can be inserted to operate either main switch or Earth Switch.
Pentagon Switchgear manufactures Load Break Switches in Three Pole / Single Pole, Manual / Motorised Operated upto 33KV range. Our Load
Break Switches are simple but robust design with trouble free mechanism. These Switches are used in applications like transformer switching,
Ring Main Gears (RMG), Condensors, etc.,
TECHNICAL DATA:
Rated Voltage
12KV
24KV
36KV
Pentagon Switchgear offers Load Break Switches that can be Make/Break the normal rated current and make the short circuit current. The design
Rated Current
400/630 Amps.
400/630 Amps
400/630 Amps
of Load Break Switch is user friendly, and easy in operation with reliable function. Load Break Switches are type tested at CPRI in accordance with
Permissible
10 - 12KV
22 - 24KV
33 - 36KV
26.3KA
26.3KA
26.3KA
Rated Making
65 KA (Peak)
65 KA (Peak)
65 KA (Peak)
Type of Break
Air
Air
Air
Rated Insulation Level
25KV/75KV Peak
IS9920 / IEC 265.
Services Voltage
Pentagon Switchgear Supplies products to BESCOM, ESCOMS, Water & Sewage Boards, Process Industries, other Industrial clients through
Rated Shirt time
reputed Contractors.
current
Type
Basic Load Break
Switch
Type Reference
Type Reference
Type Reference
12KV
24KV
36KV
PSG - 12 - LBS
PSG - 24 - LBS
PSG - 36 - LBS
PSG - 12 - LBS - ESFT
PSG - 24 - ESFT
PSG - 36 - LBS - ESFT
-
Break
- Break
– Break
50KV/125KV
70KV/170KV
Peak
Peak
Rated Frequency
50 Hz
50 Hz
50 Hz
No. of Poles
3
3
3
No. of Breaks / Pole
Single
Single
Single
Load Break Switch
with Earth and Fuse Trip
Mechanism
Load Break Switch
with Earth Switch
OPTIONAL FITTINGS
PSG - 12 - LBS - ES
PSG - 24 - LBS - ES
PSG - 36 - LBS - ES
can be mounted above or below the LBS, - 16A to 120A Auxiliary Switch available as factory – fitted accessory with 2 NO + 2 NC or 4 No + 4 NC for Local
/ Remote On, Off Indication purpose. Live line in indicators can be given as an optional accessory in all the modular panels. H.T. Fuses, Shunt-trip,
Load Break Switch
with Earth Switch
Fuse Trip Mechanism
Earth Switch available as Factory – fitted accessory can be mounted above or below the LBS. H.T. Fuses available as factory – fitted accessory and
PSG - 12 - LBS - FT
PSG - 24 - LBS - FT
PSG - 36 - LBS - FT
Mechanical Castle – Interlocks are optional Accessories. Shunt trip coils – Available standard voltages are 110V AC, 50Hz, 220V AC, 50 Hz, 24V, 30V,
48V, 110V, 220V DC.
HT OFF LOAD ISOLATORS
Pentagon Switchgear offer compact modular Load Break panels in metal clad enclosure with dynamic mimic, extensible on both sides. The Modular
load break switch panels can be used in various combinations such as Ring main systems, multi panels etc…
The ring main system / Multi panel configuration finds applications in public and industrial medium voltage distribution networks.
Pentagon Switchgear offers Panel Mounted Off Load Isolators in Single Pole (Manual / Motorised Operated), Three Pole manually operated upto
36KV and Current Ratings from 400 Amps to 2500 Amps. Off Load Isolators are Suitable for application in process industries, Mining, Irrigation
Projects, Sub Stations, etc.,
33 KV 3 POLE OFF LOAD ISOLATOR (MANUAL)
11KV 3 POLE OFF LOAD ISOLATOR (MANUAL)
LBS OUTDOOR RMU
SINGLE POLE OFF LOAD ISOLATOR
(MANUAL INDOOR)
LBS INDOOR RMU
SALIENT FEATURES OF OUR PRODUCTS:
Available in both Indoor / Outdoor Version and
Maintenance free mechanism.
Extensible.
Compact design with aesthetic look.
Metal Clad, hence no access to live parts.
Best Service network through out India.
No are chute hence minimal maintenance.
Separate HT/LT compartments.
SINGLE POLE OFF LOAD ISOLATOR
(MOTORISED)
SINGLE POLE OFF LOAD
ISOLATOR (MOTORISED)
VACUUM CIRCUIT BREAKER
VACUUM CIRCUIT BREAKER 12/24/36/ KV, 400-2500 AMPS.
Pentagon Switchgear offer H.V. Switchgear panels in metal clad enclosure, fully extensible * with horizontal draw out vacumm
circuit breakers (single/multi lineup). These breakers are protecting the power transformers, HT capacitors bank, generators &
feeders. These breakers are also used for starting the HT motors and auto re closing duty.
11KV VCB TROLLY
33KV VCB TROLLY
Pentagon Switchgear offers Outdoor Vacuum Circuit breaker kiosk can be directly installed
on a plinth. The power supply can be taken either through roof bushings or cable box or a
combination of roof bushing and cable box. The Cts / PTs and relays are in-built in the metal
enclosure.
It consists of manul / motor operated spring charged mechanism of stored energy type. In the
closed state of the breaker, the closing springs can perform the duty operation. Facility is also
available for hand charging the springs in the event of supply failure. The closing spring is
charged by the motor in less than 15 seconds. Electrical anti – pumping feature is also
provided. The mechanism is trip free and suitable for rapid re closing. The vacuum
interrupters are capable of switching capacitive currents and small magnetizing current.
OUTDOOR VACUUM CIRCUIT BREAKER
The VCB Outdoor Kiosk can be directly installed on a plinth. The power supply can
be taken either through roof bushings or cable box or a combination of both. The
CT’s / PT’s and relays or inbuilt in the metal enclosure.
11KV VCB OUTDOOR PANEL WITH TOD METER
SALIENT FEATURES
Conforms to IEC2147, IEC-62271-100 IEC-60298, and IEC-60694.
Fully copartmentalised & Compliance to internal are as per standards.
CONSTRUCTION
Metal clad VCB cubicles are fabricated out of high quality sheet steel by sophisticated
manufacturing process, stringent in process quality checks and in house production of all critical
Emergency tripping arrangement without opening the Breaker
components. The panels are vermin proof and with degree of protection IP 4X as per IS 2147 for
chamber front door.
Indoor Panel and IP55 for Outdoor VCB Kiosk Panel.
Self aligning type cluster contacts for robust design.
Stored energy type spring closing mechanism
Fully interlocked for operational safety.
Vacuum circuit breaker panel consists of 4 chambers namely
Extensible & modular construction
1. Breaker Chamber
3. Bus bar Chamber
High reliability Re strike free
2. Metering chamber
4. CT/PT, Cable Chamber
Horizontal draw out Type
11KV VCB INDOOR PANEL WITH TOD METER
BREAKER CHAMBER :
This consists of VCB mounted on a trolley, horizontal draw out type with self aligning
type moving contacts. Fixed contacts are covered automatically by movable shutters
while draw out the VCB, to ensure no direct contacts with live parts is possible, thus
ensuring the safety of operator.
METERING CHAMBER
This consists of all meters, relays, switches, indicating lamps etc, and wired as per the
specification of the clients.
BUS BAR CHAMBER
The switchgear panels are provided with single / double bus bars with high electrical
grade copper/Aluminium depends on the current rating. The 3 phase Bus bars are
supported on strong epoxy insulation and fixed delta configuration which minimised
electro mechanical stresses under short circuit conditions. Bus bars will be provided
with sleeve insulation.
CT/PT, CABLE CHAMBER
The CT/PT & Cable chamber is located at the rear side of the panel and ready access
11KV INDOOR VCB PANEL
is available by opening the rear cover with safety weld mesh. It is also possible to
22KV VCB OUTDOOR PANEL
mount core balance CTs with in the cubicle.
33KV VCB OUTDOOR PANEL
INTERLOCKS
EARTHING (OPTIONS)
Interlocks are provided such that breaker closing is prevented in intermediate position between service and test/isolated positions
Earthing through a draw-out earthing truck with solid links on the bus bar / feeder side.
Mechanical interlocks to prevent truck racking in/out when breaker is in closed position
Integral earthing switch, slow closing type or with making capacity
Breaker can be inserted only when control plug & socket in position.
Control plug & socket can be removed only in isolated position.
Testing
Mechanical castle interlock with upstream / downstream isolators can be provided on request.
All Our VCB’S are tested before despatch with Auto scan multi parameter Testing Kit.
It ensures the quality of VCB.
TECHNICAL SPECIFICATION
Rating
Unit
PSGVCB
Rated Voltage
KV
7.2/12/24/36
Rated Current
Amps.
630,800,1250
1600, 2000
Symmetrical Breaking
Capacity
KA rms
26.3 / 40
KAP
65
Short time withstand
current (3 Secs)
Opening Time
KA
26.3 / 40
ms
35 - 45
Total Break Time
ms
55 - 65
Closing Time
ms
55 - 65
Making Capacity
22KV INDOOR VCB PANEL
The panels are powder coated with epoxy base paint to give an aesthetically pleasing appearances. The pre treatment process is done by seven tank
method. The paint shade shall be as per the requirement of clients.
Duty Cycle
O - 0.3Secs - CO - 3Mins - CO
UNITISED PACKAGE SUB-STATION (USS)
UPTO 36 KV AND 2500 KVA
11 KV, VCB PANEL WITH TRANSFORMER
The Unitised sub-station is a compact arrangements, which simplifies
conventional sub-station arrangement consists of AB switch,
Transformer, Lightning arresters are mounted on a pole structure.
Our compact sub-station panel is divided in to three compartments (i.e)
H.V Compartment which houses VCB or LBS, The transformer
11KV, 2000 KVA USS PANEL - INDOOR
compartment which houses Resin cast / Resin impregnated/Oil cooled
transformers, and the LV Compartment which houses ACB,
MCCB.SFU.etc...
FEATURES
Fully Compartmentalized Design
Indoor/Outdoor Installations are available
Compact and occupies less space
Easy to Install
Easy to operate and Less Maintenance
Tailored Configuration to meet CUSTOMER requirement
Aesthetically enhanced look and designed to suit the site topography,
which gives pleasing appearance.
11KV, 500 USS PANEL - INDOOR
APPLICATION
PENTAGON SWITCHGEAR manufactures various modules of Indoor / Outdoor type Compact package sub-Stations from 6.6KV to 33KV and up to
2500KVA transformer capacity with HT/LT Switchgear.
Our USS panels are manufactured as superior quality and user friendly products through Innovative design and technological up gradation.
They are ideally suited for new Residential and commercial complexes as it can be placed on ground floor or basement or roof Top of the High raise
buildings.
Mainly used by Power utilities, Multiplexes, Hotels, Hospitals, Shopping malls, Software Parks, Airports, and Residential complexes, etc...
Main Advantages
Reduced Electrical Losses as USS can be provided nearthe load centre.
Cost effective and space saving
A High degree of safety and operational reliability is achieved by HT and
LT Switchgear with protective relays.
Reduction in logistics costs as the USS is delivered as a single unit
Due to the enclosed Construction, it avoids bird hit, Human / Animal contacts
which may lead to fatal accidents, disruption of power supply and power losses in
the case of Open execution.
11 KV, 500 KVA USS – OUTDOOR
33KV, 1000 KVA USS PANEL -OUTDOOR
ELECTRICAL INTERLOCK
Our USS panel consists of in-built safety interlocks such as door limit
switches for transformer doors/ LT panel Doors. If anybody try to open the
transformer / LT panel doors accidentally when the sub-station is in
energized condition, then the HV Switchgear automatically trips and power
supply will be cut-off.
11KV,1000 KVA USS PANEL
WITH RMU-OUTDOOR
MECHANICAL INTERLOCK
Mechanical Interlocks will be provided between the HV switchgear and
transformer door by means of castle-key arrangement, in such a way that the
transformer doors can be opened only when the HV switchgear is switched
off and vice-versa.
ORDERING INFORMATION
22KV, 2000 KVA TRANSFORMER ENCLOSURE - INDOOR
While placing the purchase order for a Unitized Sub-Station, the
following details are to be furnished
Whether the panel is in Indoor or Outdoor Installation
Transformer rating in KV / KVA
HV COMPARTMENT
Requirement of HT/LT switchgear
LBS PANEL VIEW WITH DOOR OPEN
Load Break Switch with Fuse trip and Earth
Or
Switch Mechanism, Shunt trip coil, HTHRC
Fuses and with dynamic mimic arrangements.
Vacuum Circuit Breaker with
metering & Protection using Current /
Potential transformers and relays.
TRANSFORMER COMPARTMENT
Oil Immersed Transformer Or Dry type Resin Cast Transforme
LV COMPARTMENT
LT Control Panel with ACB and MCCB's Or SFU's with Metering
Ring main Units Consists of
Or Loa Break Switches/VCB
Combination.
TM
7.2 KV/12KV, 400/800A H.T VACUUM CONTACTOR
TECHNICAL SPECIFICATION
APPLICABLE
STANDARDS
TYPE PSGVC - 12
Volts
3300 / 6600
12000
Rated Current
Operational
Amps
400
800
Capacity
MVA
36 / 72
150
Current
Amps
6300
5000
Voltage
Volts
3300 / 6600
11000
Making Current
Amps
4000
4000
Breaking
Amps
3200
3200
Breaking Capacity
O - 3min
- CO - 3min -
Current Duty
Operations
‘C’ x 100 ‘O’ x 25
Interval
Seconds
10
CO 30
Amps
(RMS)
4400 Amps for 12 sees
2400A for 30 secs
Short time current carrying capacity
INTRODUCTION
TYPE PSGVC – 7.2
Operational
Making
ELECTRICAL LATCH TYPE
- / IS 9046 - 1978
1974
Rated Voltage
Interrupting
MECHANICAL LATCH TYPE
IEC 470
8000 Amps for 1 sec
8000A for 1
85000 Amps in 10 ms
-
secs
Pentagon Switchgear Manufactures Single pole / Three pole VACUUM
Over Current (Peak)
Amps
CONTACTOR of Ratings 7.2KV/12KV, 400A / 800A with Electrical latch and
Mechanical Latch types. These Vacuum contactors are manufactured using
Switching Frequency
Times/Hr
1200
1200
strict quality checks. Vacuum contactors can be supplied as fixed type or
Mechanical Life
Operation
2.5 Million
30000
Electrical Life
Operation
0.25 Million
20000
Trolley type. These contactors can be used for versatile applications such
as high voltage motors, transformers, capacitors for improving power factor,
Impulse Voltage withstand
KV
60
75
Power Frequency Voltage
withstand
KV
20
28
Closing Time
ms
105 - 150
120 - 145
Opening Time
ms
25 - 40
30 - 50
OpeningSpeed (Average)
m/Sec
500 - 600
-
Control Supply Voltage
Volts
110 / 220 (DC)
Motors
KW
1500 / 3000
Transformers
KVA
Capacitors
KVAr
electric furnace etc.,
11 KV VACUUM CONTACTOR
“PENTAGON SWITCHGEAR" Brand Vacuum Contactors have the following special properties,
High Breaking Capacity
Long life time
Applicable
110 - 220 (DC)
6000
Less maintance
Load Capacity
2500 /
5000
7500
2000 / 2000
3000
Compact Design
Safety and Reliable
Can be well operated
even
in worst environment condition and frequent operation
Mechanical interlock for forward and reverse operation
Single Phase Protection Shall be Achieved
Easy to install
Suitable for High switching Frequency
TM
OUTDOOR PORCELAIN CLAD VACUUM
CIRCUIT BREAKER
INTRODUCTION
PENTAGON SWITCHGEAR manufactures outdoor type Porcelain
Clad Vacuum Circuit Breakers (PSGPC-36), which are structure
mounted, easy to install for use in 36KV systems. These breakers are of
open terminal type with reliable and well proven vacuum interrupters in
weather proof porcelain housing. Adequate phase clearances and
heights have been provided to meet standard safety requirements. The
three poles are mechanically ganged to a common operating
mechanism. It is suitable for direct connection to overhead supply lines.
The operating mechanism is housed in a separate cubicle with manual /
motorised spring charged mechanism. The design of this PCVCB
incorporates a minimum number of moving parts and a simple assembly
which ensures a long electrical and mechanical service life. This breaker
is designed to handle all the switching including rapid auto - reclosing.
More over quite and low vibration operation and high temperature
sustainability enable the breaker to be used in hazardous conditions.
Against customers requirement the breaker can be supplied with extended
structure for mounting Current Transformers & Potential Transformers, Terminal
connectors & Castle key interlock. We can also offer a separate control & Relay
Panel as per customers requirement which can be installed either Indoor or
Outdoor.
TECHNICAL SPECIFICATION
Rating
PSGPC 36
Duty Cycle
O - 0.3 Sec - CO - 3 min - CO
36 KV
Opening Time
45 - 55 ms
70 KV - rms
Total Break Time
55 - 65 ms
170 KV- Peak
Closing Time
55 - 65 ms
50 Hz
Reclosing Time
300 ms
Creepage distance to earth
910 mm
Contact Stroke
22+1 mm
Across Breaker
910 mm
Operating
Rated Voltage
APPLICATION
Power Frequency With stand
Control & orotection of Overhead Lines. Distribution Transformers. Motors.
Voltage
Caoacitor banks. Power suoolv utilities. Transformer & Switching substations
operated by Automobile Industries, Rolling Mills, Iron & Steel Industry, Paper &
Food Industries, etc..
Impulse with stand Voltage
Rated Frequency
Type Tested and conforms to latest I EC/IS Standards
Features
Simple, Compacts Easy to operate.
Mechanism
Hermitically sealed Vacuum Interrupter to protect contacts
Perfect harmony between Vacuum interrupter and Operating
from oxidation & Contamination.
Mechanism.
Very Minimal maintenance.
High reliability and safety of operations.
Totally re strike free.
Suitable for Auto re-closing duty.
Low noise level
Rated Normal Current
230 V AC/DC Motorized
/ Manual
spring charge operating
1600 A
Mechanism
Rated Short Time Current
25 kA
Trip / Close Coil
24V,30V,48V,110V,230V
DC/200W
Rated short Circuit Duration
First Pole
3 Sees.
Aux. Contacts
1.5
Degree of Protection
6 NO + 6 NC
IP - 55
INDOOR EPOXY RESIN CAST MEDIUM VOLTAGE
INSTRUMENT TRANSFORMER
TM
CURRENT TRANSFORMERS
CONSTRUCTIONAL DETAILS
RANGE:
CRGO Silicon steel is used for building up electromagnetic core. Shell type
All types up to 33KV in three main types such as wound primary,
construction is used to minimize leakage reactance.
bar primary and Ring type
For primary and secondary winding, enameled copper wire is used. Primary is
Voltage Class: 3.3KV to 33KV
Primary Current rating: 5A to 2500A
wound with multi layer and graded insulation. The diameter and length of
Secondary Current Rating: 5A or 1A
Class of Accuracy: 0.2, 0.5, 0.5s, 1.0
each layer is selected such that surge voltage is distributed equally in all
Standards: IS, IEC, ANSI
layers of the winding. Winding is done in dust free atmosphere.
FEATURES:
Non Hygroscopic
Suitable for Tropics
Maintenance Free
Can be installed in any position
Less space accommodation
CONSTRUCTIONAL DETAILS
Current Transformers
Core is of high permeability CRGO silicon Steel material. Toroidal cores from continuous strips and are annealed in
controlled atmosphere to achieve best quality secondary cores.
Secondary winding is distributed equally on the periphery of the core to minimize leakage reactance. Good quality enameled
copper wire with adequate inter layer insulation is provided to avoid short circuit of secondary winding in most adverse condition.
Primary winding is of electrolytic grade copper strips with suitable insulation covering. The Primary is positioned properly to
sustain dynamic
forces developed during short circuit condition.
Insulation: High quality fibre glass tape is used to built up The insulation of the CT.
TESTING
Each current transformer is subjected to all routine tests as
per applicable standards and customer specifications.
VOLTAGE TRANSFORMERS
The designed CT's are type tested at approved laboratories
RANGE:
Primary Voltage rating
for design validation and fault with stand capabilities.
: 3.3KV to 33KV
Secondary Voltage Rating : 110V, 110V / Root 3,230V
Burden
: 50VA,100VA
Class of accuracy:
: 0.5,1.0
Number of Phases:
: Single / Three
Our testing LAB is having most advanced automatic
instrument transformer testing Kit(AITTS-98) with rated
burdens.
All the CT's pass through the standardized quality assurance
FEATURES:
plan to ensure top quality at every stage and in the final
Primary winding is resin impregnated prior to resin casting
Suitable for Tropics
Dry type
Maintenance free
Non Hygroscopic
Can be installed at any position
HV / LV windings are completely encapsulated in epoxy resin
product.
TM
OUTDOOR DOUBLE BREAK ISOLATORS
SALIENT FEATURES
Types of Mechanism
Isolators can be supplied with the two types of mechanism.
Fully type Tested as per IS-9921-1985 and IEC 60129.
Manual Operating mechanism
High contact pressure
Hand lever operated
Electro-Mechanical Interlock
Strong wiping action of the fixed contacts jaws during closing
operation to clear dirt and oxides at every operation
Provision for pad Locking
Snap action Aux. Contacts for customers use.
Motor Operating Mechanism
Negligible maintenance
Motor Coupled with a reduction worm gear to increase the output torque
Electrical interlock between breaker and isolator
High electrical and mechanical life
More reliable
Fool proof mechanical interlock between isolator and earth switch.
Local / Remote control facility
Manual operation in emergency
Robust in construction and easy to operate
Provision for pad locking
Snap action Aux. Contacts for customers use
TESTS :
Isolators are Type tested as is 9922 in recocoginised aborories such as CPRI, ERDA, etc. Routine test are Conducted in our factory as per is 9921
33KV OUTDOOR ISOLATOR
11KV OUTDOOR ISOLATOR
INTRODUCTION
Pentagon switchgear manufactures Outdoor type double break centre rotated Air break isolators which are structure mounted, Easy
to install from 11KV to 245KV systems.
The Isolator Consists of Three Phases and each phase has Three insulator posts. The fixed contacts are mounted on to the end
insulator posts and tube (Moving contact) on to the centre rotating stack. All the three phases are ganged on a common operating
mechanism for simultaneous closing and opening operation.It is suitable for direct connection to over head supply lines.
TYPE OF ISOLATORS
Range
Installation
Model
Mechanism
Mounting
: 11KV to 245KV
: Outdoor
: Double Break Centre rotated Air Break Isolator
: Banging / Turn & Twist
: Horizontal
MOVING AND FIXED CONTACTS:
The fixed contacts are made up of hard drawn electrolytic high conductivity copper strips and silver plated. The contacts are designed
with “Reverse Loop” jaw controlled by powerful springs for achieving high contact pressure after the moving contacts are fully closed.
The reverse loop is adopted to ensure maximum dependability under short circuit condition.
The moving contacts are made up of hard drawn electrolytic high conductivity copper tubes with the ends are silver plated. The tube
rotates freely on the insulator posts and the contact pressure is developed by its axial rotation and this is achieved directly from the
rotating insulator posts through a lever and thus making the construction very simple.
ISOLATOR TECHNICAL SPECIFICATION (WITH AND WITHOUT EARTH)
Rated Voltage (KV)
11
22
33
Maximum Operating Voltage (KV)
12
24
36
Continuous Current (Amps)
200/400/800/1250
200/400/800/1250
400/800/1250
Dynamic Current (KA)
20/62.5/62.5/62.5
20/62.5/62.5/62.5
62.5/62.5/62.5
8/25/25/25
8/25/25/25
25/25/25
7
7
7
6.3
6.3
6.3
Manual/Motor
Manual/Motor
Manual/Motor
Banging/Turn & Twist
Banging/Turn & Twist
Manual/Motor
Short Time Withsand Current (KA)
Magnetizing Current (KA)
Line Charging Current (Amps)
Operation
Type
Rated Voltage (KV)
110
230
Mazimum OperatingVoltage (KV)
123
245
800/1250
800/1250
DynamicCurrent(KA)
62.5/79
62.5/100
Short time Withstand Current(KA)
25/31.5
25/40
7
7
6.3
6.3
Manual/Motor
Manual/Motor
Banging/Turn & Twist
Banging/Turn & Twist
Continuous Current(Amps)
EARTHING SWITCHES:
Earthing switch can be supplied for mounting as an integral part of the isolator and these earth switches are mechanically interlocked
with the main Isolator.
BASE:
Magnetizing Current(KA)
The mounting base for each phase is robust in construction and are Hot-Dip galvanized. The outer insulator stacks and the rotating
Insulator stacks are mounted on this base structure.
Line Charging Current(KA)
TERMINAL PADS / INSULATORS:
Operation
Terminal pads of the isolator are made out of Copper / Aluminum flat projects out in the centre of the fixed contact acts to keep the insulator
stacks of the isolator in line with the bus bar support.
Porcelain Insulators used are of reputed makes only, meeting the requirement of cantilever strength, creepage distance and insulation
levels.
ARCING HORNS:
Isolators are equipped with Arcing horns for breaking the magnetism current of transformers. They are of “make before” and “Break After”
type and these are capable of breaking the magnetizing current of transformer up to 7 Amps.
Type
NOTES :
> B.O.M / M.O.M. Boxes will be Supplied on specific reqirement
> We Manufacture other rating of isolators based on customer needs.
> Insulators made by the reputed firms will be used
DUE TO CONTINUOUS IMPROVEMENT IN DESIGN CHANGE OF PRODUCTS AND DIMENSIONS ARE INEVITABLE