 |
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
地址:深圳市南山区松坪山路5号嘉达研发大楼 (深圳)
珠海市香洲区金鼎科技五路创银科技园 (珠海)
江西省九江县沙城工业园创银科技园 (江西)
深圳市创银科技股份有限公司是一家专业从事高、中、低压各类互感器、电缆附件的技术生产型企业；集研发、生产、销售为一体的国家级高新技术企业。立志服务于智能电网配套企业。 
创银科技新闻动态 
智能配电专家 
诚聘精英，欢迎你的加入 
欢迎拨打咨询热线：0755-86000552