High Voltage 15 Kv Disconnect Isolator Switch /Disconnector Switch

• Customization: Available
• Type: High-voltage
• Structure: Three-column Disconnector
• Model NO.: IS-
• 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: IEC IEEE
• Brand: Oei Power
• 11kv Knife Switch: 200A 400A 630A 1000A 1250A
• Material: Porcelain,Copper
• Rated Short-Time Withstand Current: 30ka, 40ka, 50ka, 63ka
• Raled Peak Withstand Current: 104ka, 125ka, 160ka
• Transport Package: Wooden Case
• Specification: IEC IEEE
• Trademark: OEI Power
• Origin: China Nanyang
• HS Code: 8535309000
• Production Capacity: 7000
• Package Size: 150.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 50.000kg

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.

1. Scope

Type IST off-load switchs are suitable for use in tropical zone, with a maximum ambient temperature of approximately 40 degrees Centigrade and an average temperature of approximately 28 degrees Centigrade with high humidity and heavy rainfall. The preferred operational altitude is up to 1800 m above sea level.

1. Electrical System

Type IST off-load isolator switch are designed for continuous operation on a 3-phase 3-wire 11, 15,22,24,27and 33,36kV,50/60Hz distribution system with the star-point of the source-point transformer earthed through an Arc Suppression Coil or Earthing Resistor.

1. Standards
   1. Type IST off-load isolator switch are complied with relevant requirements of the following standards together with all current amendments;

1.  IEC62271-102:2003 :High-voltage alternating-current disconnectors and earthing switches
2.       IEC60129:1984    :Alternating current disconnectors and earth switches
3.       IEC 60265-1:1998  :High voltage switches - Part 1:Switches for rated

                       voltage above 1kV and less than 52kV

1.       IEC 60694: 1996   :Common specifications for high-voltage switchgear and

                       controlgear standards

1.       IEC 60815:1986    :Guide for the selection of insulators in respect of

                        polluted conditions

1.       BS EN ISO 1461     :Hot dip galvanized coatings on fabricated iron and

                                steel articles- Specifications and test methods
4.0                     Construction
4.1                     General
4.1.1                Type IST off-load isolator switchs  are the vertical/Horizontal  mounting
Type for mounting on a single or H-pole structure for overhead
lines or feeders from the energized sections.
         
4.1.2                Type IST off-load isolator switchs are compatible and ready for
installation on tubular steel poles and spun concrete poles.
 4.1.3    The design are of an air insulated "rocking insulator"
type with two fixed insulator posts and one moving
insulator post per phase.
        
4.1.4     All steel and iron parts shall be galvanized to protect from corrosion as
per BS EN ISO 1461
 
            4.1.5    Type IST off-load isolator switchs are  equipped with a single operating mechanism and suitable coupling bars that shall operate all phases simultaneously and that independent operations of each
                       pole,irrespective of the state of the other poles,is not permitted 
SPECIFICATIONS

	i.                    Rated Voltage	12kV		24KV	36KV
	ii.                  Rated Continuous Current Carrying     Capacity	Not Less Than 400A Up to 630A
	iii.                Rated Short-Time Withstand Current (rms)	12KV		24KV	36KV
		>=20KA / 3 sec			>=25KA/ 3 sec
iv.                 Lightning Impulse Withstand Voltage (peak) -To earth and between poles                        min                        max		12KV	24KV		36KV
		60KV      75KV	95KV      125KV		145KV       170KV
-Across the isolating distance   min                            max		70KV      85KV	110KV      145KV		165KV       195KV
v.                   Power Frequency Withstand Voltage(r.m.s)      -To earth and between poles		12KV	24KV		36KV
		28KV	50KV		70KV
-Across the isolating distance		32KV	60KV		80KV
vi.                 Average Ambient Temperature     (Maximum)		28ºC (40ºC)

i.                    Humidity Range	0-100%
ii.                  Preferred Altitude Requirement	Up to 1,800m
iii.                Insulators Total Creepage Distance (mm)                        Min                       Max	12KV	24KV	36KV
	192	384	576
	465	600	900