1) The OMR is a ring main unit for 12/24kV secondary distribution networks that comes in 10 configurations and can be mounted on transformers or standalone.
2) It uses SF6 gas insulation and switching within a welded stainless steel tank to provide a sealed for life system with high reliability and safety.
3) Standard unit configurations include non-extensible, extensible, and combinations that can be customized and equipped with indicators, protection relays, and bushings.
Example of Substation Maintenance & Assessment Audits for Training - Niels In...Niels Inderbiethen
This is a good example of an audit which explores all the substation attributes, equipment & maintenance requirements and is usually the basis for creating a professional site specific Training Manual which I then finalize with the client and prepare the documentation for formal training of any new staff to the plant, together with Regulations & ORHVS training. This documentation can then also be forwarded to the SETA & SAQA for formalization and educational points allocation. It also forms a critical part of any plants record keeping requirements and plant maintenance inspections and complies with regulatory and annual legislation of any mandatory records of status and investigations of equipment. - Please note that this document is only published to showcase my work - any use, distribution, copying or any other sort of media use is prohibited as the contents are owned by Siemens and the equipment is covered by patents and the report is covered by copyrights. I appreciate your commitment to this understanding.
Medium Voltage Switchgear from RPS Switchgear provides protection of medium voltage power equipment, centralized control and circuits in industrial, commercial, and utility installations http://www.rpsswitchgear.eu
Autorecloser relays are widely implemented in the electric utilities Over Head Lines networks to improve power availability and to maintain system stability.
Site testing need to be performed before operation to ensure proper function of Autoreclosers.
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
Bus Bar protection Schemes,Simple Current differential scheme,Need for bus bar protection,requirement of bus bar protection,recommendations for providing bus bar protection,basics of busbar protection,Types of bus-bar protections,High speed differential protection
Example of Substation Maintenance & Assessment Audits for Training - Niels In...Niels Inderbiethen
This is a good example of an audit which explores all the substation attributes, equipment & maintenance requirements and is usually the basis for creating a professional site specific Training Manual which I then finalize with the client and prepare the documentation for formal training of any new staff to the plant, together with Regulations & ORHVS training. This documentation can then also be forwarded to the SETA & SAQA for formalization and educational points allocation. It also forms a critical part of any plants record keeping requirements and plant maintenance inspections and complies with regulatory and annual legislation of any mandatory records of status and investigations of equipment. - Please note that this document is only published to showcase my work - any use, distribution, copying or any other sort of media use is prohibited as the contents are owned by Siemens and the equipment is covered by patents and the report is covered by copyrights. I appreciate your commitment to this understanding.
Medium Voltage Switchgear from RPS Switchgear provides protection of medium voltage power equipment, centralized control and circuits in industrial, commercial, and utility installations http://www.rpsswitchgear.eu
Autorecloser relays are widely implemented in the electric utilities Over Head Lines networks to improve power availability and to maintain system stability.
Site testing need to be performed before operation to ensure proper function of Autoreclosers.
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
Bus Bar protection Schemes,Simple Current differential scheme,Need for bus bar protection,requirement of bus bar protection,recommendations for providing bus bar protection,basics of busbar protection,Types of bus-bar protections,High speed differential protection
Máy biến áp do tập đoàn LS sản xuất cũng thuộc nhóm sản phẩm cao cấp của thế giới, hiện đang được bán đại trà cho Mỹ, Nhật, Canada, Trung đông, Asia. Các tập đoàn công nghệ hàng đầu như Mitsubishi, Hitachi, Fuji, Siemens,….cũng đang là khách hàng của sản phẩm này trên phạm vi toàn cầu. Hiện LS cũng là một trong những nhà cung cấp Biến thế khô chính của Việt nam với các công trình tiêu biểu như :Royal City, Time City, Nam Á Bank, Air Cargo, Việt Thuận Thành Tower, Lim Tower, Thảo Điền Pearl, Petrovietnam Power Landmark, Petroland Quận 2, Diamond Island, The Era, Royal City, Cresent Mall, Petroland Tower tại Phú Mỹ Hưng, Dragon Hill Residence, Belleza, Khách sạn Continential, Khách sạn Rex, Khách sạn 5 sao Le Meriden, Phú Quốc Airport, Saigon Airport Plaza, Times City, Star City...
Catalog cs switch disconnectors_dienhathe.vnDien Ha The
Khoa Học - Kỹ Thuật & Giải Trí: http://phongvan.org
Tài Liệu Khoa Học Kỹ Thuật: http://tailieukythuat.info
Thiết bị Điện Công Nghiệp - Điện Hạ Thế: http://dienhathe.vn
KB Electric may bien ap kho Ls nhap khau KoreaKB ELECTRIC
Chiết khấu cao do KB Electric cung cấp thông tin về nhãn hiệu máy biến áp khô LS nhập khẩu từ Hàn Quốc. Chuyên dùng cho các hệ tòa nhà, cao ốc, bênh viện, trường học, công nghiệp..
This document was prepared by Zenithar Team to show the product support portfolio in the electromechanical industry. For switchgears, for transformers, and for CT, PT solutions, Zenithar is a convenient partner to help the right product solutions.
The 7PG21 is a three phase unit differential protection used to detect in zone phase and earth faults. The relay is applied to overhead line and underground cable circuits as well as shorter circuits such as interconnectors.
Relays (and associated CTs) are installed at each end of the protected circuit and connected together with dedicated metallic pilot wires.
UNIT - 05 DISTRIBUTION LINES AND TRANSFORMER CENTREPremanandDesai
Code of practice for Distribution Lines and Transformer centre, types of transformer centres -
Pole mounted, plinth mounted, indoor and outdoor types. Determining the rating of
Distribution Transformer. Write Specifications of the Distribution Transformer. Draw the
SLD of a Transformer centre indicating the size of protective devices, Prepare the schedule of
equipments /Materials with specifications for a 11KV/415V,100 KVA transformer centre and
their estimates, 415 V LT line materials and specifications , method of calculating various LT
line materials (only). Prepare the schedule of materials (only) for 3 phase 4 wire LT line,
11 KV HT Line-materials and their specifications, method of calculating various HT line
materials and tapping structure, TOPO sheet and its use, Concept of combined estimates.
Prepare the schedule of materials (only) for 11 KV single circuit HT line for Rural
Electrification.
(Note: HT lines over head type only)
Underground Cable Accessories
Elastimold® offers the industry's most complete package for managing underground cable connections.
Broad Product Range..
Elastimold accessories, available from 5kV to 138kV, connect, ground, splice, terminate and protect underground cable.
Elastimold Innovation
Elastimold’s long, innovative history includes pioneering such products as extended and repair elbows, jacket seal elbows, and shrink-fit joints.
1. Outdoor Gas Insulated RMU
Catalogue
OMR-12 kV /17.5kV /24kV
2012/8
Wenzhou Rockwill Electric Co.,Ltd.
Best solution for your power!
2. General
OMR is a ring main unit for the secondary distribution network. OMR can be supplied in 10
different configurations suitable for mostswitching applications in 12/24 kV distribution
networks. The Unit can be mounted to the smallest distribution transformer or be sited in a free
standing format.
It is extendable and combined with Rockwell own developed technology concept, which is
flexible, modular compact switchgear, they represent a complete solution for 12/24 kV
secondary distribution networks. OMR have identical user interfaces.
OMR is a completely sealed system with a stainless steel tank containing all live parts and
switching functions.
A sealed steel tank with constant atmospheric conditions ensures a high level of reliability as
well as personnel safety and a virtually maintenance-free system.
The OMR concept offers a choice of either switch-fuse combination or circuit-breaker with
relay for protection of the transformer. OMR can be supplied with an integrated remote control
and monitoring unit.
This product is in conformity with the standards:
Iec62271-200, IEC60420, GB/T11022, GB3804,GB3906
Service environment
a) Air temperature:Maximum temperature: +45℃; Minimum temperature:-20℃
b) Humidity:Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level:Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
3. Enclosure
OMR use SF6–gas (Sulphur hexafluoride)
as insulation and quenching medium.
The SF6 is contained in a welded stainless
steel tank, which is sealed for life.
The pressure system is defined as a sealed
for life system with an operating life time
exceeding 30 years. The leakage rate is less
than 0,1% per year.
In order to ensure a reliable and tight welding,
all welding work is carried out by computer
controlled robots.
Electrical and mechanical bushings
penetrating the tank are clamped and sealed
to the tank by high quality O-rings.
The mechanical bushing has in addition a
rotating shaft which connects the shaft of the
switch to the corresponding shaft of the
mechanism. The rotating shaft is sealed by a
double set of gas seals.
All SF6-tanks have to pass a leakage test
before gas fill-
ing. Leakage test and gas filling are done
inside a vacuum chamber. The first step in
the leakage test is to evacuate all air inside
both SF6-tank and vacuum chamber
simultaneously. Then the SF6-tank is filled
with Helium. Due to the character-istics of
Helium this test will detect all possible
leakages. If the SF6-tank passes this test, the
Helium will be evacuated and replaced by
SF6.
The SF6-tank has a degree of protection of
IP67 and can be immersed into water and still
maintain all functions in a satis-factory way.
5. Standard UNIT configures
Extensible Standard Unit C Extensible Standard Unit V
Extensible Standard Unit F eqv unit DF Extensible Standard Unit M
Note:
1, All the standard is optional to be equipped with Indicator, PT, Relay protection.
2, Extension bushing can be used for cable feeder or cable incoming.
Standard Combination configures
Left extensible Combination CC Left extensible Combination CV
6. Standard Combination configures
Non-extensible combination CCV Non-extensible combination CCB
Extensible Combination CC Extensible Combination CV
Extensible combination CCV Extensible combination CCB
Note:
1, All the standard is optional to be equipped with Indicator, PT, Relay protection.
2, Extension bushing can be used for cable feeder or cable incoming.
3, Extensible combination is provided by united with suitable unit.,
For example: CCV+F+CCB+M+….; Customized make is acceptable.
8. Main technical specifications
No Item Unit Load Break Switch Circuit Breaker
1 Rated voltage kV 12/17.5 24 12/17.5 24
2 Rated current A 630
3 Rated frequency Hz 50/60
4 1min Power frequency withstand
voltage
kV
45 55 45 55
5 Lightning impulse withstand voltage kV 95 125/150 95 125/150
6 Rated transfer current A 1700 1400
7 Rated active load and close circuit
breaking current
A 630
8 Rated cable charge breaking current A 50&10
9 Rated short circuit breaking current kA 20 16
10 Rated short circuit making current
(peak)
kA 63 50 63 50
11 Short time (2s) withstand current, load
switch/earth
kA 25/20 20/20 25/20 20/20
12 Rated withstand current (peak) kA 63 50 63 50
13
Mechanism life
Tim
es
3000 10000 3000
9. Protection Relays:
RP260 relay is intended to be used for the
selective short-circuit and earth-fault
protection of feeders in second-ary
distribution networks and for protection of
transformers in utilities and industries. This
relay has dual mode of earth-fault
measurement - internal vector summation or
external CBCT input. Functions are easy to
set up by using the dip-switches.
Cable bushings and cable clips:
The connection of the HV-cables is made by
cable bushings. The bushings are made of
cast resin epoxy with moulded-in conductors.
In addition, a screen is moulded in to control
the electrical field and is also used as the
main capacitor supply-ing the voltage
indicating systems.
Up-to-date production facilities and highly
advanced robots and test equipment ensure
the high quality required for each single
device.
A very high number of units have been
installed worldwide
in distribution networks, power stations and
industrial com-plexes.
Used together with full-screened connectors,
an ideal solution for areas with humidity or
condensation problems is achieved. .
Fault passage indicator
A fault passage indicator may be delivered as
an option to the OMR switchgear. The
indicator is usually placed in the front panel of
the switchgear. It makes it possible to de-tect
any faults, including short circuits, earth-faults
and short current direction, and makes it
easier to locate any fault.