Calatogue Disconnector, EHV

8/19/2019 Calatogue Disconnector, EHV

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www.siemens.com/energy

High Voltage Disconnectors

Answers for energy.

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High quality and reliability delivered.


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High-Voltage Disconnectorsavailable up to 800kV

Years of experience in high-voltage switching

technology go into the design and production of the

disconnectors that set an international trend. Customers

know Siemens as a powerful partner – a supplier

of attractive products and solutions at competitive

prices with high quality standard. We comply with

our customer’s demand for reliability, safety and cost-

effectiveness and serve them throughout the world.

Irrespective of your application our disconnectors

provide the best solution for your requirements every

time.

Siemens Ltd. has an integrated facility for design, testing

and manufacturing of disconnectors at Hyderabad. Larg-

est of its kind in India, this plant, manufacturers center

break, double break, pantograph and knee type discon-

nectors. The products range from 36kV upto 800kV for

various current ratings from 630A to 3150A* as well as

associated earth switches and drive mechanisms.

The disconnectors are supplied throughout India

covering almost all the switchyards/substations, power

stations, paper, sugar, cement, and petrochemical

Industries etc.

In the modern period, the switchyards are going for

unmanned stations and with the advent of digital relays,

the system is totally computerized and all actions are

being carried out away from the switchyard through

remote operation control, SCADA systems etc. Any failure

in operation on a command or maloperation can create

disastrous consequences like power loss, loss of equipment

or outages triggering even the grid failure.

Under these circumstances, this would call for a very reliable

& quality conscious product in disconnectors.

• Expertise in manufacturing disconnectors for varied

climatic conditions.

• Suggestions on possible interchangeability of

components/modifications at design stage itself to

optimize the resultant performance.

• Accessories like insulators, support structure and

terminal connectors can also be supplied as per the

customers requirements.

• Highly experienced service team for on-site supervision

of erection, commissioning and testing.

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Product Portfolio

Double Break Dicconnector can be installed in locations,

which have minimal overhead clearance, as blades swing

open to the side rather than lifting upwards. Double

break disconnectors are normally supplied with earth or

without earth switch based on the requirement and they

can be either with mechanical gang or with electrical

gang operation in order to ensure the smooth operation

of all the three poles simultaneoulsy.They are excellent

for installations, which have large amount of fault cur-

rent due to reverse loop contact design. The design of

two breaks per phase in series provides much greater linecharging or magnetizing current interrupting capability

with standard arcing horns.

Special Features in our Double Break Isolators:

Successfully type tested design meeting the

requirements of IEC 62271-102.

Successfully tested for short circuit level of 40kA,

50kA and 63kA.

Confirming to mechanical endurance of class M2

as per IEC requirements.

Horizontal Double Break Disconnector

Centre Break Disconnector can be installed in locations,

which have minimal overhead clearance, as blades swing

open to the side rather than lifting upwards. An economic

advantage of using Centre Break Disconnector is that it

requires only six insulators per Disconnector versus nine

insulators required for Double End Break Disconnector.Centre break disconnectors are normally supplied with

earth or without earth switch based on the requirement

and they can be either with mechanical gang or with

electrical gang operation in order to ensure the smooth

operation of all the three poles simultaneoulsy.

Horizontal Centre Break Disconnector

Special Features in our Centre Break Isolators:



Successfully tested for Short circuit level of 40kA,50kA.

Confirming to mechanical endurance of class M2

as per IEC requirements.

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Pantograph Disconnectors can be installed in locations

where coupling of buses/current transfer are required at

two different heights. Current transfer will take place from

the top-level bus to the bottom level bus through this type

of disconnector.

Pantograph disconnectors are normally supplied with one

earth switch and without earth switch based on the re-

quirement and they are usually electrically gang oper-

ated in order to ensure smooth opeartion of all the three

poles simultaneously.

Pantograph Disconnector

Horizontal Knee Type Disconnector

Special Features in our Pantograph Isolators:



Successfully tested for Short circuit level of 40kA.

Confirming to mechanical endurance of class M2 as

per IEC requirements.

A particular advantage of using Horizontal knee type

disconnector is reduced vertical dimension and these

disconnectors can be used for any conventional applica-

tion. The reliable and safe performance of our discon-nector is ensured through silver plated contacts, a special

mechanism to achieve the high contact pressure and

completely free rotating unit bearings. Our disconnectors

can withstand short circuit current rating upto 50kA/1sec

and the applicable standard is IEC 62271-102.

Note: Further information will be provided on specific

request from customer

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Operating Mechanisms

Motor Operating Mechanism

Motor coupled with a reduction worm gear toincrease the output torque.

Electrical interlock between breaker and

disconnector.

Robust mechanical interlock between disconnector

and earth switch.

Local/remote control facility.

Single phase preventer and overload protection

device.

Pole discrepancy relay in case of individual pole

operation. Local manual operation in case of emergency

operation.

Manual Operating Mechanism

Hand lever operated or through reduction gear

depending on customer’s requirement.

Electro-Mechanical interlock.

Provision for padlock.

Snap action for auxiliary contacts for customer’s

use.

Snap action auxiliary switches with silver-plated

contacts for customer’s use.

Provision for padlock.

Motor rated for 415Volts, 3 phase AC or

220V/110V DC to meet the customers’

requirement.

Siemens Disconnectors come with two types of operating mechanism depending on

the customer’s requirement

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Product Range & Technical Data

Horizontal Centre Break Disconnector

Technical Particulars Unit Rated Values

Rated voltage (kV) [kV] 36 72.5 123 145 245 420

Rated frequency [Hz] 50 50 50 50 50 50

Rated current [A] 3150 3150 3150 3150 3150 3150*

Rated short circuit withstand value [kA] 25 40 40 40 40 40/50

Rated short circuit duration S 3 3 3 3 3 3/1

Rated PF withstand voltage across isolating distance [kVr] 80 160 265 315 530 610

Rated PF withstand voltage between live terminals

and ground

[kVr] 70 140 230 275 460 520

Lightning Impulse withstand across Isolating

distance

[kVp] 195 375 630 750 1200 1425

Lightning Impulse withstand between live terminals

and ground

[kVp] 170 325 550 650 1050 1665

Switching Impulse withstand across Isolating

distance

[kVp] - - - - - 1245

Switching Impulse withstand across between live

terminals and ground

[kVp] - - - - - 1050

Horizontal Double Break Disconnector


Rated voltage (kV) [kV] 36 72.5 123 145 245 420

Rated frequency [Hz] 50 50 50 50 50 50

Rated current [A] 3150 3150 3150 3150 3150 3150*

Rated short circuit withstand value [kA] 25 40 40 40/50 40/50 40/50/63

Rated short circuit duration S 3 3 3 3/1 3/1 3/1/1

Rated PF withstand voltage across isolating distance [kVr] 80 160 265 315 530 610


and ground

[kVr] 70 140 230 275 460 520


distance

[kVp] 195 375 630 750 1200 1425


and ground

[kVp] 170 325 550 650 1050 1665


distance

[kVp] - - - - - 1245



[kVp] - - - - - 1050

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Pantograph Disconnector


Rated voltage (kV) [kV] - - - - 245 420

Rated frequency [Hz] - - - - 50 50

Rated current [A] - - - - 3150 3150*

Rated short circuit withstand value [kA] - - - - 40 40

Rated short circuit duration S - - - - 3 3

Rated PF withstand voltage across isolating distance [kVr] - - - - 530 610


and ground

[kVr] - - - - 460 520


distance

[kVp] - - - - 1200 1425


and ground

[kVp] - - - - 1050 1665


distance

[kVp] - - - - - 1245



[kVp] - - - - - 1050

Horizontal Knee Type Disconnector


Rated voltage (kV) [kV] - - - - - 800

Rated frequency [Hz] - - - - - 50

Rated current [A] - - - - - 3150*

Rated short circuit withstand value [kA] - - - - - 50

Rated short circuit duration S - - - - - 1

Rated PF withstand voltage across isolating distance [kVr] - - - - - 1150


and ground

[kVr] - - - - - 830


distance

[kVp] - - - - - 2100(+455)


and ground

[kVp] - - - - - 2100


distance

[kVp] - - - - - 1175(+650)



[kVp] - - - - - 1550

* The rating of disconnector for 4500A is available against specific request.

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Siemens Ltd.

Plot No 89 and 90, IDA -Gandhinagar,Balanagar(Post), Hyderabad-500037,Andhra Pradesh,IndiaFax:+91 40 23079992

www.siemens.com/energy

XX-XX-XXX-XXX

Product upgradation is a continuous process. Hence, data inthis catalog is subject to change without prior notice. For thelatest information, please get in touch with our Sales Offices.

A worldwide 24 hours service is available, which immediately

sends out service personnel and/or delivers spare parts as needed.

Customer Support Center:-

Toll free Phone no. in India: 1800 2667 480

Email: [email protected]

Calatogue Disconnector, EHV

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