Disconnector for 220kV Substation
Introduciton;
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.
DESIGN AND CONSTRUCTION
1 The Isolator, Solid Link shall be designed and constructed in accordance with IEC 129 and IEC 60694.
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.
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 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.
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.
6 All steel parts shall be hot dip galvanized to BS 729. The minimum coating of galvanizing required is 80
microns.
7 The solid link shall be removable from the mounting by use of operating rod.
8 All current carrying parts of the isolator shall be made of high conductivity material.
9 The isolator shall be fitted with clamp connectors for Aluminium (ACSR) conductor of Aluminium
(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
TRI-LINKS
Lot 3-(a) 11kV with interrupters
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 NOTES
Suppliers 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, It istherefore imperative that schedule "B" is completed by the tenderer. Any deviations/modifications/alternatives specification must be listed in schedule "C.
33kV without interrupters
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 NOTES
Suppliers 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.
Our Services
FAQ
Introduciton;
These disconnectors are , no load switching devices which physically isolate the lines. They are designed for
horizontal outdoor application and can also be designed for vertical installation. For earthing and closing of
switchyard portions of the installation, the earthing switches are provided on disconnector. If required.
The following documents were referred to during the preparation of this specification. In case of conflict, thehorizontal outdoor application and can also be designed for vertical installation. For earthing and closing of
switchyard portions of the installation, the earthing switches are provided on disconnector. If required.
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.
DESIGN AND CONSTRUCTION
1 The Isolator, Solid Link shall be designed and constructed in accordance with IEC 129 and IEC 60694.
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.
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 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.
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.
6 All steel parts shall be hot dip galvanized to BS 729. The minimum coating of galvanizing required is 80
microns.
7 The solid link shall be removable from the mounting by use of operating rod.
8 All current carrying parts of the isolator shall be made of high conductivity material.
9 The isolator shall be fitted with clamp connectors for Aluminium (ACSR) conductor of Aluminium
(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/O | DETAIL | DATA | ||
| 1 | Description | Solid link assembly complete with link rated at 200A and mounting bracket to PIESA 002.(See Figure 1 to Figure 12 below) | ||
| 2 | System conditions of service a) nominal Voltage (Un) r.m.s | kV | 11 | |
| b) maximum system voltage (Um) r.m.s | KV | 12 | ||
| c) earthing | Effective & non effective | |||
| d) Frequency | Hz | 50 | ||
| 3 | Site conditions of service a) altitude | m | 1400 | |
| b) Operating Ambient temperature | °C | -1 to 40 | ||
| c) Humidity | % | 85 | ||
| 4 | Rating | |||
| a) Nominal voltage | kV | 11 | ||
| b) Rated current | Solid link | A | 200 | |
| Cut out base | A | 200 | ||
| 5 | Electrical components | |||
| a) Insulator material specification | Porcelain | |||
| Dielectric strength | ||||
| Lightning impulse withstand (1.2/50) | kV | 95 | ||
| Power frequency wet withstand voltage r.m.s | kV | 28 | ||
| 6 | Specific creepage distance | mm/kV | 25 | |
| 7 | General information to be provided with bid: Drawings and brochures showing outline and general arrangement | Yes/No | Yes |
| b) Detailed drawings of all items showing critical tolerances to be provided with bid | Yes/No | Yes | |
| 8 | Previous Type test report/certificate on complete solid link assembly to be provided with bid | Yes/No | Yes |
| 10 | Routine tests (acceptance tests on sample Product) to be provided on delivery | Yes/No | Yes |
| 11 | Applicable standard | PIESA 002 | |
| 12 | Other applicable standards | NRS 035 SABS IEC 60282-2 SABS IEC 60186 BS 137 part 2 |
TRI-LINKS
Lot 3-(a) 11kV with interrupters
| N/O | DETAIL | DATA | |
| 1 | TYPE | 11kV pre-assembled gang operated overhead line load break switch complete with expulsioninterrupters | |
| 2 | Mounting configuration | Horizontal | |
| 3 | Mode of operation | Manually operated pole mounted linking rod and handle withlocking facilities | |
| a) nominal Voltage (Un) r.m.s | kV | 11 | |
| b) maximum voltage (Um) r.m.s | KV | 12 | |
| c) earthing | Effective & non effective | ||
| d) Frequency | Hz | 50 | |
| e) rated current | Amp | 400 | |
| f) Fault closing capacity | kA | 12.5 | |
| 4 | Site conditions of service a) altitude | metres | 1400 |
| b) Operating Ambient temperature | °C | -1 to +40 | |
| c) Relative humidity | % | 85 | |
| 5 | Electrical components | ||
| a) Insulator material specification | High Temperature Vulcanised Silicon rubber | ||
| b) Cross arm and operating controls materials | Hot dip galvanized steel to SAN760 | ||
| Dielectric strength | |||
| Lightning impulse withstand (1.2/50) | kV | 95 |
| Power frequency wet withstand voltage r.m.s | KV | 28 | |
| Short time current rating -1sec | kA | 12.5 | |
| 6 | creepage distance | mm/kV | 25 |
| 7 | General information to be provided with bid: Drawings and brochures showing Outline and general arrangement | Yes/No | Yes |
| 8 | Previous Type test report/certificate on complete assembly to be provided with bid | Yes/No | Yes. |
| 9 | Routine tests (acceptance tests on sample Product) to be provided on delivery. | Yes/No | Yes |
| 10 | Applicable standards | IEC62271 |
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 NOTES
Suppliers 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, It istherefore imperative that schedule "B" is completed by the tenderer. Any deviations/modifications/alternatives specification must be listed in schedule "C.
33kV with interrupters
| N/O | DETAIL | DATA | |
| 1 | TYPE | 33kV pre-assembled gang operated overhead line load break switch complete with expulsioninterrupters | |
| 2 | Mounting configuration | Horizontal | |
| 3 | Mode of operation | Manually operated pole mounted linking rod and handle withlocking facilities | |
| a) nominal Voltage (Un) r.m.s | kV | 33 | |
| b) maximum voltage (Um) r.m.s | KV | 36 | |
| c) earthing | Effective & non effective | ||
| d) Frequency | Hz | 50 | |
| e) rated current | Amp | 200 | |
| f) Fault closing capacity | kA | 12.5 | |
| 4 | Site conditions of service a) altitude | metres | 1400 |
| b) Operating Ambient temperature | °C | -1 to +40 | |
| c) Relative humidity | % | 85 | |
| 5 | Electrical components | ||
| a) Insulator material specification | High Temperature Vulcanised Silicon rubber | ||
| b) Cross arm and operating controls materials | Hot dip galvanized steel to SAN760 | ||
| Dielectric strength | |||
| Lightning impulse withstand (1.2/50) | kV | 170 | |
| Power frequency wet withstand voltage r.m.s | KV | 70 | |
| Short time current rating -1sec | kA | 12.5 | |
| 6 | creepage distance | mm/kV | 25 |
| 7 | General information to be provided with bid: |
| Drawings and brochures showing Outline and general arrangement | Yes/No | Yes | |
| 8 | Previous Type test report/certificate on complete assembly to be provided with bid | Yes/No | Yes |
| 9 | Routine tests (acceptance tests on sample Product) to be provided on delivery | Yes/No | Yes |
| 10 | Applicable standards | IEC62271 |
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 NOTES
Suppliers 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.
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 NOTES
Suppliers 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 interrupters
| N/O | DETAIL | DATA | |
| 1 | TYPE | 11kV pre-assembled gang operated overhead line switch withoutexpulsion interrupters (non-load breakswitch) | |
| 2 | Mounting configuration | Horizontal | |
| 3 | Mode of operation | Manually operated pole mounted linking rod and handle withlocking facilities | |
| a) nominal Voltage (Un) r.m.s | kV | 11 | |
| b) maximum voltage (Um) r.m.s | KV | 12 | |
| c) earthing | Effective & non effective | ||
| d) Frequency | Hz | 50 | |
| e) rated current | Amp | 400 | |
| 4 | Site conditions of service a) altitude | metres | 1400 |
| b) Operating Ambient temperature | °C | -1 to +40 | |
| c) Relative humidity | % | 85 | |
| 5 | Electrical components | ||
| a) Insulator material specification | High Temperature Vulcanised Silicon rubber | ||
| b) Cross arm and operating controls materials | Hot dip galvanized steel to SAN760 | ||
| Dielectric strength | |||
| Lightning impulse withstand (1.2/50) | kV | 95 | |
| Power frequency wet withstand voltage r.m.s | KV | 28 | |
| Short time current rating -1sec | kA | 12.5 | |
| 6 | creepage distance | mm/kV | 25 |
| 7 | General information to be provided with bid: |
| Drawing and brochures showing Outline and general arrangement | Yes/No | Yes | |
| 8 | Previous Type test report/certificate on complete assembly to be provided with bid | Yes/No | Yes |
| 9 | Routine tests (acceptance tests on sample Product) to be provided on delivery | Yes/No | Yes |
| 10 | Applicable standards | IEC62271 |
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 NOTES
Suppliers 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
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 NOTES
Suppliers 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
33kV without interrupters
| N/O | DETAIL | DATA | |
| 1 | TYPE | 33kV pre-assembled gang operated overhead line switch withoutexpulsion interrupters (non-load breakswitch) | |
| 2 | Mounting configuration | Horizontal | |
| 3 | Mode of operation | Manually operated pole mounted linking rod and handle withlocking facilities | |
| a) nominal Voltage (Un) r.m.s | kV | 33 | |
| b) maximum voltage (Um) r.m.s | KV | 36 | |
| c) earthing | Effective & non effective | ||
| d) Frequency | Hz | 50 | |
| e) rated current | Amp | 200 | |
| 4 | Site conditions of service a) altitude | metres | 1400 |
| b) Operating Ambient temperature | °C | -1 to +40 | |
| c) Relative humidity | % | 85 | |
| 5 | Electrical components | ||
| a) Insulator material specification | High Temperature Vulcanised Silicon rubber | ||
| b) Cross arm and operating controls materials | Hot dip galvanized steel to SAN760 | ||
| Dielectric strength | |||
| Lightning impulse withstand (1.2/50) | kV | 170 | |
| Power frequency wet withstand voltage r.m.s | KV | 70 | |
| Short time current rating -1sec | kA | 12.5 | |
| 6 | creepage distance | mm/kV | 25 |
| 7 | General information to be provided with bid: |
| Drawing and brochures showing Outline and general arrangement | Yes/No | Yes | |
| 8 | Previous Type test report/certificate on complete assembly to be provided with bid | Yes/No | Yes |
| 9 | Routine tests (acceptance tests on sample Product) to be provided on delivery | Yes/No | Yes |
| 10 | Applicable standards | IEC62271 |
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 NOTES
Suppliers 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.
Our Services
1. | Pre sale service |
a. | make technical solution |
b. | send quotation, technical data sheet and drawing |
c. | prepare power transmission plan, testing plan,and shipment plan |
2. | In sale service |
a. | supervise the manufacturing schedule totally in accordance with the plan |
b. | send photos to customer during every manufacturing process(hold point) |
c. | inform the customer one week before testinng. |
3. | After sale service |
a. | installation and commissioning, training the workers |
b. | quick response within 12 hours any time |
c. | provide 12 months gurantee period normally. |
FAQ
1. Q: | What is your delivery time ? |
A: | Depend on the type of transformer. |
2. Q: | What is your payment term? |
A: | 30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it. |
3. Q: | What kind of starndard you follow? |
A: | IEC, ANSI, CSA, GB, etc |
4. Q: | What kind of supporting documentation you can provide normally |
A: | Quotation,outline drawing,manufacturing plan, quality control plan |
5. Q: | What is your normal wanrranty period? |
A: | 12 months after transformer operation. |
6. Q: | Can u do installation and commissioningin user's site? |
A: | Yes, we can send our installation team to user's country for service. |
7. Q: | Do you have any experience in this kind of transformer? |
A: | Yes, we can provide reference list for check. |
8. Q: | Are you manufacturer or trading company? |
A: | Manufacturer with own import & export company. |
Our advantages:
Quality Assurance
--From the very beginning, VILLE ensures quality in every step to achieve the best quality.
Experience Sharing
--With more than 30 years' experience in power industry, VILLE brings you an optimized solution.
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please trust both of us will create a brilliant future!