current Transformer
Product Details
1General Description:
LVBQ-220 SF6 current transformer is applied for measurement and protection of electric power distribution and transmission with voltage 220KV, 50Hz.
2Main Features:
This product is inverted style, which consists of body, post bushing, base. And the body lays the top of the product. A rupture wedge is fixed on the top; primary winding and secondary
winding are all installed on the shell of the body; the body has the same electrical potential with primary circuit, the shell insulates through post bushing; primary winding crosses through the
centre of secondary winding, the two winding are insulated by SF6 gas. Secondary winding is fixed in the body through insulating barrel. The incoming line connects with secondary wiring terminal
in base through the metal shielding pipe in post bushing, which is applied for connecting measuring and protective load by users. The change of current could realize through primary line device
series-parallel connecting from outside or changing at secondary line terminal. There are adsorbent, patching panel, FS6 pointer density controller with temperature compensating device on the
base. Main merit: advanced technology, good insulation capability, easy maintenance, safe function.
3Main technical Data:
|
No.
|
Item
|
Unit
|
Data
|
|
1
|
Max voltage of device
|
KV
|
252
|
|
2
|
Rated voltage
|
kV
|
220
|
|
3
|
Rated frequency
|
Hz
|
50
|
|
4
|
Rated short time power frequency withstand voltage(1min rms)
|
KV
|
395
|
|
5
|
Rated lighting impulse withstand voltage(peak)(all wave 1.2/50s)
|
KV
|
950
|
|
6
|
Rated lighting impulse withstand voltage(peak)( wave25s)
|
KV
|
1093
|
|
7
|
Rated short time thermal current(rms)
|
KA
|
31.5-50
|
|
8
|
Rated peak withstand current(peak)
|
KA
|
80-125
|
|
9
|
Partial discharging quantity
|
pC
|
5
|
|
10
|
SF6 gas rated press(20)
|
MPa
|
0.4
|
|
11
|
SF6 gas refilling press(20)
|
MPa
|
0.38
|
|
12
|
Seismic level
|
Degree
|
8
|
|
13
|
Min creepage ratio
|
mm/KV
|
25
|
|
14
|
Mechanical strength (3 direction)
|
N
|
2000
|
|
15
|
Secondary winding No.
|
|
4-8
|
|
16
|
Rated output quantity
|
VA
|
20-80
|
|
17
|
Measure winding exact degree
|
|
0.20.50.2s0.5s
|
|
18
|
Protect winding exact degree
|
|
5P/10P
|
|
19
|
Measure meter safety index
|
|
Fs5/Fs10
|
|
20
|
|
|
101520
|
|
21
|
SF6 gas leakage per year
|
|
- Country:Hong Kong
- telephone:852-852-25200017
| LVBQ-220 SF6 current transformer is applied for measurement and protection of electric power distribution and transmission |
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