Main Technical Data Sheet
|
No
|
Item
|
CT
|
VT
|
|
1.
|
Rated System
Voltage
|
33 kV
|
|
2.
|
Max. System Voltage
|
36 kV
|
|
3.
|
Impulse Withstand
Voltage BIL
|
170 kV
|
|
4.
|
Power
Frequency Test Voltage (r.m.s.) 1 minute (Primary)
|
70 kV
|
|
Power
Frequency Test Voltage (r.m.s.) 1 minute (Secondary)
|
3
kV
|
|
5
|
Method of earthed
|
Effectively earthed
|
|
6
|
Ratio
|
5/5A、10/5A、15/5A
25/5A、30/5A、50/5A
75/5A、100/5A、200/5A
300/5A、400/5A
|
33/√3/0.11/√3 kV
|
|
7
|
Rated Frequency
|
50 Hz
|
|
8
|
Rated Continuous
Thermal Current
|
120%(1.2)
|
/
|
|
9
|
Rated
Short time current (Ith) (thermal 1 second)
|
40×Ipr
|
/
|
|
10
|
Rated Dynamic
Current (Idyn)
|
2.5×Ith
|
/
|
|
11
|
Rated Voltage
Factor
|
/
|
1.2Un/Continuous
|
|
12
|
Standard connection
|
/
|
Y-Y
|
|
13
|
No. of Secondary
Winding
|
1
|
1
|
|
14
|
Rated Output(VA)
|
10
|
15
|
|
15
|
Accuracy Class
|
0.2 Metering
|
0.2 Metering
|
|
16
|
Instrument Security
Factor (FS)
|
5
|
/
|
|
17
|
Creepage Distance
|
1150mm
|
|
18
|
No. of CTs and VTs
|
3VT+3CT
|
|
19
|
Type
|
Outdoor Pole mounted Dry Type.
|
|
20.
|
Applicable Standard
|
IEC: 61869-1&2 (Latest Edition)
|
IEC: 61869-1&3 (Latest Edition)
|
Note:Upon request we
are glad to offer transformers according to other technical specs
Other Features:
a).
The integrated unit is hot vacuum
cast in an insulating resin, to achieve a discharge free high voltage
insulation. The epoxy resin used in the outdoor environment has a whole
full-casing design
b). Secondary terminals are covered by stainless steel
metal to seal.
c).A
secondary shorting switch strap provided in the junction box.
d). The lid of the secondary terminal box of the transformers
( metering unit) are provided with sealing facilities by using sealing screws
to prevent access to the unauthorized persons.
e).
Lifting
tackles are provided for convenient and safe handing of the combined
transformers.
f).
External terminals for connection to overhead line
(primary side) suitable for a range of stranded copper or aluminum conductors
of 20 sq mm to 100 sq mm.
Outline drawing:

Wiring diagram: