1# International Business Department.
0086-755-8600 0713
Mobile :+86-138 2379 0397
1F and 4F block B,Jiada R&D Bldg, High-tech Park,Nanshan,Shenzhen,China
Post code:518057
CATALOGUE
Low Voltage Measuring Current Transformers BH-0.72Ⅰ
This model belongs to the indoor molded low voltage measuring current transformer. It is widely used in indoors and weather: the highest ambient temperature + 55 ° C, the annual average ambient temperature of 32 ° C, the maximum relative humidity of 99%, Highest altitude - From MSL to 2000 M above MSL, can be installed in the anti-pollution area, no Salt air and explosive gases.
Main Technical Data Sheet
No
|
Item |
CT |
1. |
Type |
Indoor |
2. |
Nominal Voltage |
400 V |
3. |
Rated Voltage |
416V |
4. |
Insulation Voltage |
600 V |
5 |
Frequency |
50 Hz |
6 |
Power Frequency Withstand Voltage |
3kV rms |
7 |
Impulse withstand Voltage |
6kV peak |
8 |
Accuracy Class |
0.5 |
9 |
Rated burden |
5 VA (for ≥ 100/5 A Ratings) & 2.5 VA(upto 50/5 A Ratings)
|
10 |
Limits of current error and phase displacement |
IEC 61869-2 |
11 |
Instrument Security Factor |
< 5 |
12 |
Primary current |
50A ,100A, 200A, 300A, 400A |
13 |
Secondary current |
5A |
14 |
Short-time withstand current/Duration |
25kA/1 Sec. |
15 |
Type of Insulation |
encased |
16 |
Class of Insulation |
A |
17 |
Temperature rise (max.) |
60K |
18 |
Sealable Terminal box |
to be provided
|
19 |
Foot Stand |
to be provided
|
Note: Upon request, we are happy to provide current transformers according to other technical specifications.
Other Features:
a). The ring type low voltage measuring current transformer shall be of the encased type (in which the current transformer core and winding are mechanically and electrically protected within an insulation, robust andstrong plastic case) suitable for operation in tropical climatic conditions and the dielectric strength shall not be less than that stipulated in the Technical Requirements. All CT be of Single Turn.
b). The internal diameter of the current transformers not less than the valuestipulated below:
Current Transformer Rating (Amp) |
Internal diameter of the CT (min.) to accommodate the PVC insulated Al Cable of sizes (sqmm) |
50/5 A |
50 |
100/5 A |
85 |
200/5 A |
120 |
300/5 A |
185 |
400/5 A |
240 |
c). Terminals shall be suitable for 2.5 sqmm cables. Double secondery terminals shall be provided for short circuiting the secondary winding before opening the measuring circuit.
d).The secondary terminals of the current transformer are mounted in a junction box with a seal and are designed with lead screws to prevent contact with unauthorized personnel.
Outline drawing
1# International Business Department.
0086-755-8600 0713
Mobile :+86-138 2379 0397
1F and 4F block B,Jiada R&D Bldg, High-tech Park,Nanshan,Shenzhen,China
Post code:518057