1) Pragati Electricals Pvt. Ltd. was established in 1975 and manufactures instrument transformers up to 132kV in two factories in India.
2) The document is a certificate verifying that Pragati Electricals' quality system is in compliance with ISO 9001:2000 standards for the design, development, and manufacture of instrument transformers for industrial applications.
3) The certificate includes the scope of registration and applies to goods and services provided from Pragati's specified addresses.
Transformer vector group_test_conditionsSARAVANAN A
Test Conditions for various vector groups commonly under use are listed along with pictorial representation. Assuming the reader has sufficient exposure to transformer winding connections.
Transformer Vector Group Test conditions
YNd1, YNd11, Dyn11, YNyn0and more
Practical handbook-for-relay-protection-engineersSARAVANAN A
The ‘Hand Book’ covers the Code of Practice in Protection Circuitry including standard lead and device numbers, mode of connections at terminal strips, colour codes in multicore cables, Dos and Donts in execution. Also, principles of various protective relays and schemes including special protection schemes like differential,
restricted, directional and distance relays are explained with sketches. The norms of protection of generators, transformers, lines & Capacitor Banks are also given.
Transformer vector group_test_conditionsSARAVANAN A
Test Conditions for various vector groups commonly under use are listed along with pictorial representation. Assuming the reader has sufficient exposure to transformer winding connections.
Transformer Vector Group Test conditions
YNd1, YNd11, Dyn11, YNyn0and more
Practical handbook-for-relay-protection-engineersSARAVANAN A
The ‘Hand Book’ covers the Code of Practice in Protection Circuitry including standard lead and device numbers, mode of connections at terminal strips, colour codes in multicore cables, Dos and Donts in execution. Also, principles of various protective relays and schemes including special protection schemes like differential,
restricted, directional and distance relays are explained with sketches. The norms of protection of generators, transformers, lines & Capacitor Banks are also given.
This ppt describes the function of Power Transformer in a Power Generation plant. Here DPL(Durgapur Projects Limited) was our VT venue, so chose it as the Base.
Installation, Testing and Troubleshooting of TransformersLiving Online
This will provide you with practical knowledge (including tips, tricks and tools) covering the fundamentals of power transformers and their testing. It will greatly assist you in communicating more effectively with your electrical engineering colleagues. At the end of this workshop, participants will be familiar with the importance of transformer testing and their purpose, the different kinds of transformer tests and their procedures and the practical applications of principals applied in transformer operation and maintenance.
WHO SHOULD ATTEND?
This workshop will be appropriate for the following professionals:
Electrical engineers
Maintenance engineers
Maintenance supervisors
Power electricians
Power engineers
MORE INFORMATION: http://www.idc-online.com/content/installation-testing-and-troubleshooting-transformers-24
In-Country Training
On
Operation, Maintenance, Protection & Control of 33/11 kV Substation
Project Name: Design, Supply, Installation, Testing & Commissioning of 33/11 kV sub-stations with source end feeder bays.
Contract No: BREB/UREDS/W-01A-001/02/2016-2017
BREB/UREDS/W-01A-002/03/2016-2017
BREB/UREDS/W-01A-004/04/2016-2017
This guide presents a methodology based on standard PN-IEC 60354 to check overloading capacity of transformers. Main changes versus standard PN-71/E-81000 are discussed and step by step examples are given. An essential advantage of the recommended methods of verification of overloading capacity of transformers is that the size and cooling modes of transformers are considered.
This ppt describes the function of Power Transformer in a Power Generation plant. Here DPL(Durgapur Projects Limited) was our VT venue, so chose it as the Base.
Installation, Testing and Troubleshooting of TransformersLiving Online
This will provide you with practical knowledge (including tips, tricks and tools) covering the fundamentals of power transformers and their testing. It will greatly assist you in communicating more effectively with your electrical engineering colleagues. At the end of this workshop, participants will be familiar with the importance of transformer testing and their purpose, the different kinds of transformer tests and their procedures and the practical applications of principals applied in transformer operation and maintenance.
WHO SHOULD ATTEND?
This workshop will be appropriate for the following professionals:
Electrical engineers
Maintenance engineers
Maintenance supervisors
Power electricians
Power engineers
MORE INFORMATION: http://www.idc-online.com/content/installation-testing-and-troubleshooting-transformers-24
In-Country Training
On
Operation, Maintenance, Protection & Control of 33/11 kV Substation
Project Name: Design, Supply, Installation, Testing & Commissioning of 33/11 kV sub-stations with source end feeder bays.
Contract No: BREB/UREDS/W-01A-001/02/2016-2017
BREB/UREDS/W-01A-002/03/2016-2017
BREB/UREDS/W-01A-004/04/2016-2017
This guide presents a methodology based on standard PN-IEC 60354 to check overloading capacity of transformers. Main changes versus standard PN-71/E-81000 are discussed and step by step examples are given. An essential advantage of the recommended methods of verification of overloading capacity of transformers is that the size and cooling modes of transformers are considered.
Tirupati Transformer private limited has been established since 2014 a leading manufacturer engage in manufacturing, supplying and exporting a comprehensive range of power & distribution transformers, VCB panel , electrical and panel and other electrical equipment. Our entire range of transformers is in conformation to as per 1S1180, BS-171, IEC-76, CBIP etc standards. We, Tirupati Transformers private limited Supported by highly skilled professionals, who are trained to accomplish our organizational goals. Lead by our founder Mr Kapil Tomar, with his experience of over 5 years in electrical industry, has helped the organisation achieve success.
Powering Every House, Powering Every IndustryAkil Siddiqui
Manufacturer, Supplier & Stockist
Cosmostat is 25 Years old Reputed company specializing in Manufacturing , Trading & Export of all Electrical Goods. Established in 1994, we are today amongst the top companies working in this field.
We provide a huge basket of products under one roof to meet various project requirements. The company principally competes on the basis of product quality and performance, reliability of supply, timely delivery, customer service and price. We are the manufactures & supplier of Power Transformers, Distribution Transformers, OLTC Transformers, Servo Stabilizer, Dry Type Transformers, Compact Substation, VCB, RMU, Electrical Panels based in Delhi, India.
Cosmostat has established a long term relationship with Electrical Companies like Crompton Greaves, Siemens , Schneider, ABB, PVJ Power & Servokon for its range of Medium & High Voltage items like VCB , RMU , Transformers , and other Power Equipment's
Our Vision
Our Vision is to provide a on time delivery and services to the Global Energy and process industries, Power Plants, Cement industries, Sugar industries, Hydel Power Plants, Steel Industries, Thermal Industries, Oil & Gas industries, Chemical Industries, Solar & Wind industries, Paper Industries, Textile Industries, Syntactic industries.
Our Expertise
Cosmostat had good technical expertise, Engineering support team, Qualified technicians and good representative to understand customer requirements. We can offer easy ordering, reliable delivery on day dispatch.
Transformers Manufacturer, Furnace Transformers, Distribution Transformers, 66 kv substation in india
For more details please visit us at: http://www.bcenergyinfra.com
Synergy Transformers stands with expert team for manufacturing transformers for energy units and electrical supply companies for power transmission to commercial and other power factors.
Company Profile of Tirupati Transformers Pvt LtdKapilTomar16
Tirupati Transformers Private Limited has been established since 20I4 and we are constantly striving to be the best transformer manufacturer in India by providing quality products as per IS1180, BS-I7I, IEC-76, CBIP etc. standards to our customers. Our superiority is to provide the best services to satisfy our customers. We have transformers ranging from 25KVA to 2500KVA with primary voltage up to 33000V. We ensure that our products are tested by our skilled professionals before delivery of the products. We work in the manufacture, supply and export of power transformers, distribution transformers, rectifiers, furnace transformers, VCB panels, servo stabilizers, electrical panels, HT-AVRs, power factor panels and dry type transformers.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
1. RE
M
G
RI
IS FTE DRE
N C .N D E R W R I T E R S A B O R A T O R I E SU L I
UL®
UL®
Pragati Electricals
Private Limited
R - 230, TTC, MIDC
Industrial Area
Rabale
Navi Mumbai - 400 701
INDIA
Underwriters Laboratories Inc.® (UL) issues this certificate to the Firm named above, after assessing
the Firm’s quality system and finding it in compliance with
ISO 9001:2000EN ISO 9001:2000; BS EN ISO 9001:2000; ANSI/ASQ Q9001:2000
The Design & Development and Manufacture of Instrument Transformers and
Specialty Transformers for Industrial Applications.
Further clarifications regarding the scope of this certificate and the applicability of ISO
9001:2000 requirements may be obtained by consulting the organization.
This quality system registration is included in UL’s Directory of Registered Firms and applies to the
provision of goods and/or services as specified in the scope of registration from the address(es)
shown above. By issuance of this certificate the firm represents that it will maintain its registration in
accordance with the applicable requirements. This certificate is not transferable and remains the
property of Underwriters Laboratories Inc. ® .
3612 (US) : Power, Distribution and Specialty Transformers
nd
280/3, 2 Pokhran Road,
Thane - 400 610
INDIA
John H. Schmidt
Senior Vice President, Chief Development Officer
File Number: A12604 Volume: 1
Original Certificate Date: October 13, 2003
ISO 9001:2000 Issue Date: October 13, 2003
Revision Date: September 19, 2006
Recertification Date: October 13, 2006
Renewal Date: October 12, 2009
for the following scope of registration
2. INDOOR CURRENT TRANSFORMERS...........................................08-12
INDOOR VOLTAGE TRANSFORMERS............................................13-17
LOW TENSION INSTRUMENT TRANSFORMERS..........................24-25
H. V. TESTER.....................................................................................26-27
BUS DUCT CURRENT TRANSFORMERS............................................18
OUTDOOR OIL COOL CURRENT TRANSFORMERS.....................21-22
NEUTRAL GROUNDING TRANSFORMERS.........................................23
GENERAL INFORMATION.....................................................................07
INDOOR AND OUTDOOR METERING CUBICLES...............................28
OUTDOOR OIL COOL CURRENT TRANSFORMERS.....................19-20
6
3. Pragati Electricals Pvt. Ltd. was established
in 1975, by electrical engineers having rich
experience in the field of design and
manufacturing of instrument transformers.
During the last 25 years, the company has,
with in-house technology, developed, many
products as per the requirements of the indoor
Switchgear industry and conforming to Indian
and International standards.
PRAGATI is one of the leading manufacturers of
Epoxy Resin Cast Indoor medium voltage
Instrument Transformers and oil cooled
Transformers upto 132 kV in India. They are
manufactured in two modern factories, one at
Thane and another at Navi Mumbai.
Qualified and experienced engineers are
working in sales, Design, Production &Testing.
Products are type tested at recognized
institutes such as CPRI / ERDA etc.
PRAGATI - the name stands for a whole range of
products, high product quality and short delivery
periods.
PRAGATI’s major customers in India include
Switchgear manufacturers such as Siemens,
ABB, BHEL, Altome, and power utilities Such as
Tata Power, CESC, BSES, BEST etc.
! Epoxy Resin Cast - Indoor - Current
&Voltage transformers upto 33kV.
Range : All types upto and including 33kV
in three main types such as Wound-Primary,
Bar-Primary and window type.
! High Current Ring type Current Transformers
Range : Upto 20,000A (22kV system voltage
for Generator Bus-ducts).
! High Current CTs with split core arrangement
for furnace duty.
Range :Upto 60,000A
! All types of Low Voltage Current & Voltage
Transfor mers (Indoor & Outdoor),
Summation Current Transformers and Core
balance CurrentTransformers.
! Epoxy Resin Cast Coil, Dry Type Transformers
upto 22kV & 250kVA for applications such as
neutral grounding transformer, Earthing
transformers, Control transformers etc.
! DC Current & Voltage transformers upto
50,000A and 3000Volts.
! High Voltage Tester (HVT) from 2.5kV to
300kV.
! Outdoor Oil Cooled Current & Voltage
Transformer.
Range : All types upto & including 132kV in
Live Tank & Dead Tank for Current
Transformers & Dead Tank for Voltage
Transformer.
! Outdoor Combined CT VT unit upto 33kV and
Residual voltageTransformer upto 33kV.
! Indoor & Outdoor metering cubicles upto 33kV.
! Special Designs : The company undertakes
design and development of any type of
instrument transformers upto 36kV system
voltage, tailor-made to suit the special
electrical and dimensional specification
required by the customer.
Standards :IS, IEC, ANSI, BS, DIN
7
1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21 22 23 24 25 26
27 28
20. PRAGATI manufactures all type of Indoor / Outdoor low tension current and voltage transformers
and have supplied large nos.of L.T.instrument transformers from 1975 to all the major O.E.Ms.The
company undertakes the design and development of all types of LT current transformers and
voltage transformers to suit the special electrical and dimensional specification required by the
customer.
Types of Low Tension Indoor CTs :
1. Tape wound Ring type current transformers
with / without mounting arrangement.
2. Tape wound / Resin cast, wound primary
current transformers (WPL).
3. Resin cast Bar Primary Current
Transformers.
4. Bushing Cts.
5. Universal Auxiliary Transformer
(Multi Ratio CT).
6. Interposing Current Transformer.
Types of Low Tension Indoor VTs :
1. Tape wound / Resin cast voltage
Transformer.
2. Interposing Voltage Transformer.
3. Isolation Voltage Transformer.
Special Purpose Low Tension Indoor CTs
and VTs :
1. Summation Current Transformer.
2. Core balance Current Transformer (for earth
fault protection).
3. Precision Grade CTs and VTs.
4. Furnace Current Transformers (Split core
Type).
5. D.C. Current Transformer for measurement
purpose.
Types of Low Tension Outdoor Cts :
1. Cycloeliphatic resin cast wound primary Cts
for metering and protection.
2. Cycloeliphatic resin cast bar primary CTs for
metering and protection.
Tape Insulated Cts
Voltage Transformers
Windows Ct’s
LOW TENSION INSTRUMENT TRANSFORMER
24
21. LOW TENSION INSTRUMENT TRANSFORMER
SUMMATION CURRENT TRANSFORMERS :
Summation current Transformers are in
association with feeder current Transformers
which may not have the same ratio.Each feeder is
provided with its own current transformer, and
their secondary windings are connected to the
appropriate primary winding of the summation
current transformer. The summation current
transformer has a single secondary winding
which is connected to the burden. It is essential
that the summation current transformers
are used on the currents of the same frequency
and phase.
CORE BALANCE CURRENTTRANSFORMER:
( CBCT ).
The core balance current transformers are used
for sensitive earth fault protection. Generally it is
sufficient to incorporate insulation monitoring for
signaling appearance of earth faults. The
operating staff in such cases will be able to take
the measures to switch the load over to other
feeders and switch out the fault circuits for
repairs.
INTERPOSING CURRENT TRANSFORMERS :
A current transformer which is intended to amend
the ratio of a main transformer by having its
primary winding connected to the secondary
winding of the main transformer and its
secondary winding connected to the burden.
APPLICATION OF SOME SPECIAL PURPOSE CURRENT TRANSFORMERS.
Windows Ct’s
Windows Ct’s
Core Balance Ct’s
Window type C.T.’s
Busbar type C.T.’s
Summation / Auxiliary C.T.
Window type Ct’s Summation C.T.
Core Balance C.T.
25
22. INTRODUCTION
Every electrical apparatus or machine is provided
with insulation between live part and earth or
between two different sections of live parts. This
insulation is required to be tested at high voltage
values recommended by applicable relevant
standards.
The standard specification for various electrical
apparatus specifies Power Frequency Voltage
withstand test at different levels depending upon
working voltage of electrical apparatus. It is
observed from the various standards for electrical
equipments that the minimum power frequency
voltage withstand test level for electrical
insulation is 3kV for one minute.
We have, therefore, standardized on
manufacture of Pragati High Voltage Breakdown
Testers with rated voltage of 5kV.
High Voltage Test Sets of higher voltage upto
300kV are also manufactured against specific
requirement. The standard voltages are 10kV,
15kV, 20kV, 25kV, 30kV, 50kV, 100kV, 150kV,
200kV & 300kV. The test sets upto 30kV are
manufactured in Air Cooled design while the sets
of 50kV & above are manufactured in Oil Cooled
design.The output of these high voltage testers is
single phase 50/60Hz.The standard H.T. current
rating of air-cooled design as also of oil cooled
design upto 150kV is 100mA for 30 minutes. For
voltage ranges above 150kV the H. T. current is
100mA for 30 minutes.
CONSTRUCTION
Pragati make 5kV A.C. (With 2.5kV tap) High
Voltage Breakdown Tester is portable, sturdy &
plug in to start type construction & requires
minimum table space. It broadly consists of 3
main sections
1.HighVoltageTransformer
2.VariableVoltage Source
3.Control Circuit
1. HighVoltageTransformers:
The High Voltage transformer is single
phase, single pole type & is of double
wound resin moulded construction. The
H. T. winding is provided with graded
insulation such that one end is insulated for
3kV insulation and is earthed through a
c u r r e n t s e n s i n g t r a n s fo r m e r s &
milliammeter whereas other end is
insulated for rated voltage & the same
brought out through H. T. cable & spring
loaded Prod.
2. VariableVoltage Source:
Variable Voltage supply is provided through
a Dimmerstat (Variable auto-transformer)
having a suitable rating corresponding to
the rating of H. V. transformer. Dimmerstat is
rated for 230 Volts A. C. input & 0-270V
output. Limit switch at zero position end of
Dimmerstat winding is provided to facilitate
the H. T. winding to energize only when
Dimmerstat is at zero position.
3. Control Circuit & Other Features:
! Manually operated control transformer
(Variable auto-transformer) with zero
interlock facility.
! 72mm sq. Double range (0-2.5kV/0-5kV)
moving coil rectifier type voltmeter of
class 1.5, provided to read NO LOAD H. T.
voltage.
! 72mm sq. (0-100mA) moving coil rectifier
type A. C. milliammeter of class 1.5,
provide in the earth end of the H. T.
winding to read H.T.Current.
! Automatic tripping circuit is provided for
H. V.TESTER
Oil Cool High Voltage Transformers
2.5 kV - 5 kV Test Set
26
23. isolation of supply, in the event of failure of
the object under test. Rotary switch with
four different settings of 5, 10, 50 &
100mA is provided on front panel with
LED indication.
! M.C.B. for short circuit protection of H.T.
transformer & auto transformer.
! H.T. ON push button, Mains ON & H.T.
transformer & auto transformer
! Range selection switch to select 2.5kV or
5kV range with Led indication.
! Two spring loaded test prods with 1 metre
long cable for safe & easy connection of high
voltage to test object.(Upto 5kV)
! Portable model with minimum table space.
! Two terminals are brought out on back of H. V.
tester for connecting external delayed NC
contact of timer.
H. V.TESTER
1. MINIATURE CIRCUIT BREAKER
2. DIMMERSTAT
3. AUXILIARY TRANSFORMER
4. VOLTAGE RANGE INDICATOR
5. KILO VOLT METER
6. RANGE SELECTOR SWITCH
7. MAIN ‘NO’ LED YELLOW
8. H. T. ON LED RED
9. H. T. ON PUSH BUTTON
10. MAIN RELAY COIL
11. MAIN RELAY
12. HIGH VOLTAGE TRANSFORMER
13. MILLIAMMETER
14. TIMER CONNECTION LINK
15. TRIPPING ADJUSTMENT POT
16. TRIPPING C, Tr.
17. TRIPPING SELECTOR SWITCH
18. TRIPPING INDICATOR
19. EARTH TEST PROD BLACK
20. H. T. TEST PROD RED
21. D’STAT ZERO MICRO SWITCH
22. RECTIFIER
23. TRIPPING RELAY
24. BLEEDER RESISTANCE
CIRCUIT DIAGRAM :
DIMESIONAL DRAWING :
10kV - 30kV TEST SET
500±10
400±5
550 ±10
260 ±5
445±10
2.5kV - 5kV TEST SET
DIMENSIONAL DRAWING :
380
355
210
335
290
TEST
PRODS
NOTE : DIMENSIONS MARKED THIS (’) &
CONSTRUCTION ARE SUBJECT TO
CHANGE IN VOLTAGE & CURRENT RATING
150kV OIL COOLED HIGH VOLTAGE TRANSFORMER
685±6
835 ±6
1890±50*
80
Ø418 *
Ø30
800
1200
750 800
PRIMARY TERMINAL
PRESS
EARTH
SECONDARY TERMINAL BOX
CIRCUITDIAGRAMFOR2.5-5kVH.V.TESTERONLY
21
24
4
14
7
15
10
kV
31
BODY OF
H.V. TESTER
N
23 17
9
16 12
20
19
8
27
24. INDOOR AND OUT DOOR METERING CUBICLES
“Pragati” manufactures INDOOR AND OUT DOOR METERING
CUBICLES rating from 11 KV to 33 KV. The modern Plant
situated at THANE is equipped with full range of testing
equipments and Plant & machinery to manufacture Metering
Cubicles. “PRAGATI” had supplied good numbers of Metering
Cubicles (Both INDOOR & OUT DOOR) to various OEMS in the
country. These Metering Cubicles are working satisfactorily
under different service conditions at the sites.
APPLICATION: Direct measurement of CURRENT / VOLTAGE
in High voltage system is not possible because of insulation
problem of measuring instruments. It is not possible to use direct
CURRENT / VOLTAGE for the system protection purpose due to
its high value and high insulation problem of protective relays.
The Out door type Metering Cubicles are suitable to install on
structure without any Room or Shade. The cubicle is completely
Weather & Dust proof.
The INDOOR & OUTDOOR type Cubicles are Pilfer Resistant
because of its constructional features and its sealing and locking
arrangements. Also the ELECTRONICS LOCK can be provided
to METER Chamber on Special Demand.
The CTs and PTs we are using in the Metering Cubicles are our
own products. PRAGATI was established in 1975, by electrical
engineers having rich experience in the field of design and
manufacturing of Instrument Transformers.
PRAGATI is one of the leading manufacturers of EPOXY RESIN
CAST INDOOR Instrument Transformers (CTs & PTs) in India
100
10
25
75
350350 350 440
785
1405
965
11
8 8
11
SECTIONAL SIDE VIEW
6
7
120
10
12
45
470 350 350 350
775 655
1430
1520
8
4
5
1
2
3
1685
1750
45
ELEVATION
(WITHOUT OPENING)
1490
SECTIONAL PLAN
100
380380
SIDE VIEW
1490 9 3030
1314 1025
75
85.5
PADLOCKING
ARRANGEMENT
LOUVERS
1750
ELEVATION
820 700
75
LOUVERS
28
