High Voltage Disconnector Switch Isolaing Switch132kv

Center Break Isolator and double Break Isolator
These disconnectors are , no load switching deviceswhich physically isolate the lines. They are designed forhorizontal outdoor application and can also be designedfor vertical installation. For earthing and closing ofswitchyard portions of the installation, the earthingswitches are provided on disconnector. If required.The following documents were referred to during the preparation of this specification. In case of conflict, the provisions of this specification shall take precedence.
IEC 129:1975: Alternating Current Disconnectors (Isolators) and Earthing Switches
IEC 60694:2002: Common Specifications for High Voltage Switchgear and Controlgear
BS 729: Hot dip galvanized coating on iron and steel articles
IEC62271-102
Isolator (Disconnector) - a mechanical switching device which provides, in the open position, an isolating distance in accordance with Electrical Safety requirements.SERVICE CONDITIONS
The isolator shall be suitable for continuous operation outdoors in tropical areas at altitudes of up to 2200m above sea level, humidities of up to 90%, average ambient temperature of +30ºC with a minimum of -1ºC and a maximum of +40ºC and heavy saline conditions along the coast.4.2. DESIGN AND CONSTRUCTION
4.2.1 The Isolator, Solid link shall be designed and constructed in accordance with IEC 129 and IEC 60694.
4.2.2 The isolating link shall be of the vertical opening, designed for single phase manual operation. It shall be easily removed and replaced by using a portable operating rod.
4.2.3 The isolating link shall incorporate double porcelain insulators to suit voltage requirements and mounted on hot dipped galvanised steel under base suitable for vertical mounting.
4.2.4 The isolating link shall be arranged so that each unit is mounted independently on an angle bracket. It shall be supplied complete with the angle bracket and accessories suitable for mounting on 'U' type steel channel. The drawings to be submitted shall indicate all the applicable mounting positions.
4.2.5 The isolator shall be designed such that in fully open position, it shall provide adequate electrical isolation between the contacts on each phase. It shall conform to the requirement as single point isolation for safety.
4.2.6 All steel parts shall be hot dip galvanized to BS 729. The minimum coating of galvanizing required is 80 microns.
4.2.7 The solid link shall be removable from the mounting by use of operating rod.
4.2.8 All current carrying parts of the isolator shall be made of high conductivity material.
4.2.9 The isolator shall be fitted with clamp connectors for Aluminium (ACSR) conductor ofAluminium (ACSR)conductor of up to 18.2mm diameter.The rating of the complete isolator shall be as follows: -
Rated voltage
36 kV
Rated frequency
50 Hz
Rated lightning impulse withstand voltage
200 kV
Rated power frequency withstand voltage, dry
95 kV
Rated normal current
400 Amps
Rated short time withstand current for 3 sec, min.
18.0 kA
Minimum creepage distance of insulators
900 mm
SOLID LINKS 11KV
N/ODETAILDATA1DescriptionSolid link assembly complete with link
rated at 200A and mounting bracket to PIESA 002. (See Figure 1 to Figure 12 below)2System conditions of servicea) nominal Voltage (Un) r.m.skV11b) maximum system voltage (Um) r.m.sKV12c) earthingEffective & non effectived) FrequencyHz503Site conditions of service
a) altitude
m
1400b) Operating Ambient temperature°C-1 to 40c) Humidity%854Ratinga) Nominal voltagekV11b) Rated currentSolid link
A
200
Cut out base
A
2005Electrical componentsa) Insulator material specificationPorcelainDielectric strengthLightning impulse withstand (1.2/50)kV95Power frequency wet withstand voltage
r.m.skV286Specific creepage distancemm/kV257General information to be provided
with bid:
Drawings and brochures showing outline and general arrangementYes/NoYesb) Detailed drawings of all items
showing critical tolerances to be provided with bidYes/NoYes8Previous Type test report/certificate on
complete solid link assembly to be provided with bid
Yes/No
Yes10Routine tests (acceptance tests on
sample
Product) to be provided on deliveryYes/NoYes11Applicable standardPIESA 00212Other applicable standardsNRS 035
SABS IEC 60282-2
SABS IEC 60186
BS 137 part 2TRI-LINKSLot 3-(a) 11kV with interrupters
N/ODETAILDATA1TYPE11kV pre-assembled gang
operated overhead line load break switch complete with expulsion interrupters2Mounting configurationHorizontal3Mode of operationManually operated pole
mounted linking rod and handle with locking facilitiesa) nominal Voltage (Un) r.m.skV11b) maximum voltage (Um) r.m.sKV12c) earthingEffective & non effectived) FrequencyHz50e) rated currentAmp400f) Fault closing capacitykA12.54Site conditions of service
a) altitude
metres
1400b) Operating Ambient temperature
°C
-1 to +40c) Relative humidity%855Electrical componentsa) Insulator material specificationHigh Temperature Vulcanised
Silicon rubberb) Cross arm and operating controls materialsHot dip galvanized steel to
SAN760Dielectric strengthLightning impulse withstand (1.2/50)kV95Power frequency wet withstand voltage r.m.sKV28Short time current rating -1seckA12.56creepage distancemm/kV257General information to be provided with bid:
Drawings and brochures showing
Outline and general arrangement
Yes/No
Yes8Previous Type test report/certificate on complete
assembly to be provided with bidYes/NoYes.9Routine tests (acceptance tests on sampleProduct) to be provided on delivery.Yes/NoYes10Applicable standardsIEC62271FURTHER REQUIREMENTS:Water shall not be able to accumulate on any part of the equipment nor shall any feature introduce moisture into any component.
The design shall incorporate all reasonable precautions and provisions for the safety of personnel concerned with the operation and maintenance of the same.
The current path shall be such that load current shall only flow through high conductive materials such as copper and its alloys. Load current shall not be permitted to flow through ferrous components, springs, or spring-loaded mechanisms.
All load current paths shall be so designed that the relevant parts of the switch are capable of carrying the specified rated current without exceeding the permitted temperature rise.SUPPLIMENTARY NOTESSuppliers should give sufficient information including drawings (which must be brief, clear and to the point) on how their switch designs addresses these requirements. Further, Suppliers may offer better alternatives that are of cost benefits to customer, 33kV with interrupters
N/ODETAILDATA1TYPE33kV pre-assembled gang
operated overhead line load break switch complete with expulsion interrupters2Mounting configurationHorizontal3Mode of operationManually operated pole
mounted linking rod and handle with locking facilitiesa) nominal Voltage (Un) r.m.skV33b) maximum voltage (Um) r.m.sKV36c) earthingEffective & non effectived) FrequencyHz50e) rated currentAmp200f) Fault closing capacitykA12.54Site conditions of service
a) altitude
metres
1400b) Operating Ambient temperature
°C
-1 to +40c) Relative humidity%855Electrical componentsa) Insulator material specificationHigh Temperature Vulcanised
Silicon rubberb) Cross arm and operating controls materialsHot dip galvanized steel to
SAN760Dielectric strengthLightning impulse withstand (1.2/50)kV170Power frequency wet withstand voltage r.m.sKV70Short time current rating -1seckA12.56creepage distancemm/kV257General information to be provided with bid:Drawings and brochures showing
Outline and general arrangement
Yes/No
Yes8Previous Type test report/certificate on complete
assembly to be provided with bidYes/NoYes9Routine tests (acceptance tests on sampleProduct) to be provided on deliveryYes/NoYes10Applicable standardsIEC62271FURTHER REQUIREMENTS:Water shall not be able to accumulate on any part of the equipment nor shall any feature introduce moisture into any component.
The design shall incorporate all reasonable precautions and provisions for the safety of personnel concerned with the operation and maintenance of the same.
The current path shall be such that load current shall only flow through high conductive materials such as copper and its alloys. Load current shall not be permitted to flow through ferrous components, springs, or spring-loaded mechanisms.
All load current paths shall be so designed that the relevant parts of the switch are capable of carrying the specified rated current without exceeding the permitted temperature rise.SUPPLIMENTARY NOTESSuppliers should give sufficient information including drawings (which must be brief, clear and to the point) on how their switch designs addresses these requirements. Further, Suppliers may offer better alternatives that are of cost benefits to custoemr.
11kV without interruptersN/ODETAILDATA1TYPE11kV pre-assembled gang
operated overhead line switch without expulsion interrupters (non-load break switch)2Mounting configurationHorizontal3Mode of operationManually operated pole
mounted linking rod and handle with locking facilitiesa) nominal Voltage (Un) r.m.skV11b) maximum voltage (Um) r.m.sKV12c) earthingEffective & non effectived) FrequencyHz50e) rated currentAmp4004Site conditions of service
a) altitude
metres
1400b) Operating Ambient temperature
°C
-1 to +40c) Relative humidity%855Electrical componentsa) Insulator material specificationHigh Temperature Vulcanised
Silicon rubberb) Cross arm and operating controls materialsHot dip galvanized steel to
SAN760Dielectric strengthLightning impulse withstand (1.2/50)kV95Power frequency wet withstand voltage r.m.sKV28Short time current rating -1seckA12.56creepage distancemm/kV257General information to be provided with bid:Drawing and brochures showing
Outline and general arrangement
Yes/No
Yes8Previous Type test report/certificate on complete
assembly to be provided with bidYes/NoYes9Routine tests (acceptance tests on sampleProduct) to be provided on deliveryYes/NoYes10Applicable standardsIEC62271FURTHER REQUIREMENTS:Water shall not be able to accumulate on any part of the equipment nor shall any feature introduce moisture into any component.
The design shall incorporate all reasonable precautions and provisions for the safety of personnel concerned with the operation and maintenance of the same.
The current path shall be such that load current shall only flow through high conductive materials such as copper and its alloys. Load current shall not be permitted to flow through ferrous components, springs, or spring-loaded mechanisms.
All load current paths shall be so designed that the relevant parts of the switch are capable of carrying the specified rated current without exceeding the permitted temperature rise.SUPPLIMENTARY NOTESSuppliers should give sufficient information including drawings (which must be brief, clear and to the point) on how their switch designs addresses these requirements. Further, Suppliers may offer better alternatives that are of cost benefits to33kV without interruptersN/ODETAILDATA1TYPE33kV pre-assembled gang
operated overhead line switch without expulsion interrupters (non-load break switch)2Mounting configurationHorizontal3Mode of operationManually operated pole
mounted linking rod and handle with locking facilitiesa) nominal Voltage (Un) r.m.skV33b) maximum voltage (Um) r.m.sKV36c) earthingEffective & non effectived) FrequencyHz50e) rated currentAmp2004Site conditions of service
a) altitude
metres
1400b) Operating Ambient temperature
°C
-1 to +40c) Relative humidity%855Electrical componentsa) Insulator material specificationHigh Temperature Vulcanised
Silicon rubberb) Cross arm and operating controls materialsHot dip galvanized steel to
SAN760Dielectric strengthLightning impulse withstand (1.2/50)kV170Power frequency wet withstand voltage r.m.sKV70Short time current rating -1seckA12.56creepage distancemm/kV257General information to be provided with bid:Drawing and brochures showing
Outline and general arrangement
Yes/No
Yes8Previous Type test report/certificate on complete
assembly to be provided with bidYes/NoYes9Routine tests (acceptance tests on sampleProduct) to be provided on deliveryYes/NoYes10Applicable standardsIEC62271
FURTHER REQUIREMENTS:Water shall not be able to accumulate on any part of the equipment nor shall any feature introduce moisture into any component.
The design shall incorporate all reasonable precautions and provisions for the safety of personnel concerned with the operation and maintenance of the same.
The current path shall be such that load current shall only flow through high conductive materials such as copper and its alloys. Load current shall not be permitted to flow through ferrous components, springs, or spring-loaded mechanisms.
All load current paths shall be so designed that the relevant parts of the switch are capable of carrying the specified rated current without exceeding the permitted temperature rise.SUPPLIMENTARY NOTESSuppliers should give sufficient information including drawings (which must be brief, clear and to the point) on how their switch designs addresses these requirements. Further, Suppliers may offer better alternatives that are of cost benefits to.