電機綜合保護測控裝置
CH-EP420系列
CH-EP420系列數(shù)字式電動機保護器
|
Display |
Description |
Remark |
 |
Over Current Trip |
Operate within predefined time. |
 |
Under Current Trip |
Operate within 3 seconds. |
 |
Open Phase Trip |
Operate within 1.5 seconds when the unbalance rate is over 70%. |
 |
Unbalance Trip |
Operate within 3 seconds. |
 |
Lock Trip |
Operate within 0.5 seconds. |
 |
Stall Trip |
Operate within 3 seconds. |
 |
Reverse Phase Trip |
Operate within 0.1 second. |
 |
Ground Fault Trip |
Operate within predefined time. |
 |
Instantaneous Trip |
Operate within 0.05 seconds. |
 |
Elapsed Time (No Trip) |
The operation time is reset when the Reset key is pressed. |
 |
Communication Fault between Body and Display (Press the ENTER/RESET key to return to the normal mode) |
|
|
for the Motor |
|
External CT |
Motor Output (Less than kW) |
||||
|
Current Selection S/W |
Wire Tunnel |
CT ratio |
220V |
380V |
440V |
||
|
0.7A or less |
0.5~10A |
4 times |
0.25 |
- |
0.1 |
0.18 | 0.2 |
|
0.7~1.6A |
Twice |
0.5 |
- | 0.25 | 0.55 | 0.6 | |
|
1.6~8A |
Once |
1 | - | 1.5 | 3 | 3.7 | |
|
7~100A |
5~100A |
Once |
1 | - | 25 | 45 | 55 |
|
90~120A |
0.5~10A |
Once |
30 |
SCT-150 |
30 | 55 | 55 |
|
120A~160A |
Once |
40 |
SCT-200 |
45 | 75 | 90 | |
|
160~240A |
Once |
60 |
SCT-300 |
55 | 110 | 132 | |
|
240~320A |
Once |
80 |
SCT-400 |
90 | 160 | 160 | |
|
320~400A |
Once |
100 |
500 : 5 |
110 | 200 | 200 | |
|
400~480A |
Once |
120 |
600 : 5 |
132 | 250 | 250 | |
|
480~640A |
Once |
160 |
800 : 5 |
160 | 320 | 320 | |
|
Analog (DC 4~20mA) Output / Communication 1) The biggest current out of measured 3-phase currents is converted into DC 4mA~20mA and the current measured remotely by digital meter can be displayed. 2) When there is no current, 4mA is sent. If the current goes beyond the predefined value,20mA is sent.
Note) The allowable burden is less than 500?. Considering the receiver resistance (usually 250?) and track resistance), the shielding cable should be used. |
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