Disconnector
EHV Switchgeara
Disconnector 
CG has been a name to reckon with in the global electrical arena. We bring all our products with leading edge technology which supplement the existing CG range of switchgear products in order to complete the scope of the substation equipment such as outdoor off load disconnector.
We started manufacture and supply of the isolators from the year 2005 and within a short span of time we have made our presence felt worldwide. We are exporting disconnector products to almost 32 countries.
There are two types of Disconnectors. HCBD and HDBD.
- Accepted world-wide
- Self-alignment of contact assemblies at works, these are ready to erect at site
- Lifetime self lubricated sealed aluminum die cast bearings
- Designed and tested for Class M2 - mechanical operation test, as per IEC: 62271-102
- Reliable turn and twist type with sheet steel canopy
- Various options with individual pole/gang operation, motor and manual operations possible
- The full range is type tested in the NABAL accredited laboratories
Rated Voltage
Rated Current*
Rated short Time current
Rated peak Short Circuit current
Power Frequency Withstand Voltage r.m.s 1min.
Lighting impulse Withstand Voltage 1.2/50mS
Switching impulse Withstand Voltage 250/2500mS
To earth
Across isolating distance
To earth
Across isolating distance
To earth
Across isolating distance
kV
A
kA
kAp
kV
kV
kVp
kVp
kVp
kVp
72.5
1250 / 1600 / 2000
40
100
140
160
325
375
—
—
123
1250 / 1600 / 2000,
40
100
230
265
550
630
—
—
145
1250 / 1600 / 2000,
40
100
275
315
650
750
—
—
170
1250 / 1600 / 2000
40
100
325
375
750
860
—
—
245
1250 / 1600 / 2000
40/50
100/125
460
530
1050
1200
—
—
300
4000
40/50
100/125
380
435
1050
1050(+170)
850
700(+245)
420
2000 / 2500
40/50
100/125
520
610
1425
1425(+240)
1050
900(+345)
* higher current optional.
Horizontal Centre Break Disconnectors and Horizontal Double Break Disconnectors
Manual and motorized operating mechanisms can be provided. Mechanical interlocks between main circuits and earthing blades are standard. All disconnectors are fully type tested at laboratories like CPRI and ERDA as per IEC 60129 and IEC 62271-102 standards.
