Main Technical Data Sheet
|
No
|
Item
|
CT
|
|
1.
|
Highest voltage for equipment
|
0.72KV
|
|
2.
|
Rated power-frequency with-stand voltage:
|
3 KV
|
|
3.
|
Rated
primary currents
|
300-3000A
|
|
4.
|
Rated secondary current:
|
5A,1A
|
|
5
|
The rated insulation voltage
|
800 V
|
|
6
|
Rated frequency
|
50Hz,60Hz
|
|
7
|
Accuracy class
according
|
0.2S,0.2,0.5,1
|
|
8
|
Rated output
|
1VA,2.5VA,3.75VA,5VA7.5VA,10VA,15VA
|
|
9
|
Power factor
|
0.8
|
|
10
|
Limits of current error
and phase displacement
|
IEC 61869-1&2
|
|
11
|
Extended
current ratings
|
1.2
|
|
12
|
Instrument security factor
|
5,10
|
|
13
|
The maximum ambient air temperature
|
50°C
|
|
14
|
average value measured over a period of 24 hr
|
35°C
|
|
15
|
The minimum ambient air temperature
|
-5°C
|
|
16
|
Maximum
temperature difference between day and night
|
25°C
|
|
17
|
The installation altitude
|
1000m
|
Note: Upon request, we are happy to provide current
transformers according to other technical specifications.
Other Features:
a). Secondary terminals have two pinch screws for each terminal. Each
terminal shall ensure good contact pressure on two exposed tips of secondary
wire of 4mm2. The screws shall withstand the tightening torque of at least 4.0
Nm. The screws made of nickel plated or passivated brass.
b). Secondary terminals have
protective terminals cover provided. for
the cover sealing.
Terminals marked as per IEC Standard 61869-1,2. The
polarity markings P1, P2 and terminals markings S1 and S2 shall be placed on
the top surface of CT and be clear and readable. When installed on a bar - P1
from the left, S1 on top.
c). The CT must have the casing
made of double insulation thermoplastic material.
d). The casing must be heat
and impact resistant
e). The casing must be of
self-extinguishing classes HB40 and V-0 according to IEC 60695-11-10.
Outline drawing
Figure 3 1500-3000/5A