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1lkv 33kv off-Load Isolator
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1lkv 33kv off-Load Isolator

Quantity:
  • IST-12/400
  • Three-column Disconnector
  • Manual
  • Horizontal Rotary Type
  • Single Ground
  • Turn the Horizontal
  • Manual
  • Oei Power
  • IEC62271-102
  • 8535309000
  • High-voltage
  • Outdoor High-voltage
  • Grounding
  • Three Pole
  • Three
  • Ist
  • IEC IEEE
  • OEIpower
  • China Nanyang

Product Description


 
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.
S.No DESCRIPTION UNITS BIDDER OFFERED VALUE
1. Rated Voltage KV 12 KV
2. Frequency Hz 50 Hz
3 Rated continuous current A 630
4 Impulse withstand voltage to ground KV 95
5 Impulse withstand voltage across gaps KV 110
6 Dry one-minute power frequency withstand voltage to ground KV 35
 
7 Dry one minute power frequency withstand voltage across gap KV 45
8 Wet one minute power frequency withstand voltage to ground       KV 30
9 Limits of radio interference 10KV  and 1000 K.C/Sec
250  uV
10 Temperature rise at rated current (max.)       
30oC at 50oC ambient
11 Dimensions and mechanical ,Electrical
values Of Polymer Insulator


12 Leaking distance  mm        508 (minimum)
13 Dry arcing distance     mm 210 (minimum)
14 Cantilever strength      kg 400  
15 Tensile strength kg 1000
16 Compressive strength  kg 5400
17 Tensile proof test load       kg 700
18 Dry power frequency flashover       KV 85 
19 Wet power frequency flashover       KV 55 
20 Dry one-minute power frequency withstand KV 70
21 Wet one-minute power frequency withstand KV 45
22 Impulse flash over positive       KV 115 
23 Impulse flashover negative       KV 140
24 Power frequency puncture voltage  KV 150  

ORIENT ELECTRIC
OEIpower is able to lead turn-key projects and also cooperate in specific parts of engineering projects.

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