33 Kv off-Load Isolator Without Earth Blade

• Customization: Available
• Type: High-voltage
• Structure: Three-column Disconnector
• Installation: Outdoor High-voltage
• Operation: Manual
• Grounding Mode: Grounding
• Movement Mode: Horizontal Rotary Type
• Number of Poles: Three Pole
• Grounding: Single Ground
• Series: Three
• Run: Turn the Horizontal
• Common Model: Ist
• Structure of Operating: Manual
• Certification: ISO, IEC IEEE
• Brand: Oei Power
• 12: Kv
• 24: Kv
• 36: Kv
• Transport Package: Wooden Case
• Specification: IEC IEEE
• Trademark: OEI Power
• Origin: China Nanyang
• HS Code: 8535309000
• Production Capacity: 7000

Product Description

Center Break Isolator and double Break Isolator

 

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, 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 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 expulsion interrupters
2	Mounting configuration		Horizontal
3	Mode of operation		Manually operated pole mounted linking rod and handle with locking 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 is therefore 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 expulsion interrupters
2	Mounting configuration		Horizontal
3	Mode of operation		Manually operated pole mounted linking rod and handle with locking 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.
 
 
 

 

 
 
 
 
11kV without interrupters
 
 
 
 

N/O	DETAIL		DATA
1	TYPE		11kV pre-assembled gang operated overhead line switch without expulsion interrupters (non-load break switch)
2	Mounting configuration		Horizontal
3	Mode of operation		Manually operated pole mounted linking rod and handle with locking 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
 

 

 
 
 
 
 
33kV without interrupters
 
 

N/O	DETAIL		DATA
1	TYPE		33kV pre-assembled gang operated overhead line switch without expulsion interrupters (non-load break switch)
2	Mounting configuration		Horizontal
3	Mode of operation		Manually operated pole mounted linking rod and handle with locking 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.