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Ratings and Performance

(1) Vacuum Circuit Breaker

(2) Current Transformer

(3) Voltage Transformer

(4) Isolable Voltage

Transformer

(5) Main Busbar

(6) Reserve Busbar(7) Earth Busbar

(8) Earth Switch

* Higher insulation capability for site installation above 1000m is available upon request.

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DesignConcept36kV HV36 single/double busbar air insulated metal-clad vacuum switchgear is designed and

manufactured to provide :

Maximum safety and reliability

A minimum of maintenance, with all parts easily accessible

Easy installation

Asimplebutexibledesign

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ApplicableStandardsHV36 switchgear complies with the f ollowing international standards :

IEC 60298, 60694, 62271-100

IEC 60932, 60529, 60044

TopRank operates an ISO 9001:2000 series Quality System registered with the Standards

andIndustrialResearchInstituteofMalaysia(SIRIM),undercerticationofUKASQuality

Management.

KeyFeaturesMetal Clad construction

Horizontal Isolation, Horizontal Draw Out

Interlocked for safety

Integral fault-make earth switch

Simple Installation

Extensible

Minimal Maintenance

ConstructionGeneralThe housing is made of epoxy powder coated mild sheet steel, which is cut and folded on

numerically controlled machines. The housing parts are riveted/bolted together to form a rigid

enclosure with fully segregated :

Low Voltage Compartment

Circuit Breaker Compartment

Main Busbar Compartment

Reserved Busbar Compartment

CT / Cable / Earth Switch / PT Compartment

The degree of protection provided for enclosure is IP 4X higher

rating up to IP 43 is available upon request. To prove its suitability

for service in severe climatic conditions, the switchgear has been

subjected to climatic aging tests according to IEC 60932 and proven

to Class2.

Low Voltage CompartmentControl switches are mounted in low voltage compartment at the front of the cubicle. However,

low voltage compartment with additional height can be supplied to accommodate more complex

protection and control schemes.

Circuit Breaker CompartmentThemainandreservebusbarandcircuitspoutsarettedwithautomaticsafetyshutters.The

shutters are pad lockable in the closed position and both sets of shutters can be latched open for

testing or maintenance purposes. The manual latch is automatically cancelled when the circuit

breaker is inserted into the compartment.

Busbar CompartmentBusbar are of unit length and made o f high conductivity hard drawn, tubular copper bar. Thebusbars are supported on epoxy spouts, which extend the supply to circuit breaker terminal through

isolating contacts.

Althoughclassiedasair-insulated,thebusbarsarecoveredbymeansofheatshrunksleeves

throughout their length and the busbar joint are covered with epoxy insulating covers incorporated

withalayerofremovable/exibleepoxycompound.

DesignFlexibility

Designed&ManufacturedbasedonCustomersRequirements

HV36 has passed all the mandatory tests

stated in IEC standard. In addition, it

has also passed the stringent tests like

electrical endurance class E2 (list1) in

accordance to the latest IEC 62271-100

(previously known as IEC 60056) and

internal arc fault test for the operators

safety.

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