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Address
Room 593, Building A, No. 9 Fengxiang East Street, Yangsong Town, Huairou District, Beijing
Beijing Eklens Electric Co., Ltd
Room 593, Building A, No. 9 Fengxiang East Street, Yangsong Town, Huairou District, Beijing
Backboard installation of PLCHigh reliability PLC protector is an intelligent protector based on PLC technology, which integrates relay protection, comprehensive measurement and control, data communication and other functions. Installed in explosion-proof cabinets, it is suitable for mining equipment such as feeding switches, starters, mobile transformer low-voltage heads, dual machine dual speed switches, etc. with voltage levels of 380V, 660V, 1140V, 3300V, and various rated currents.
Backboard installation of PLCThe highly reliable PLC protector has protection functions such as overvoltage, undervoltage, overload, short circuit, leakage, three-phase imbalance, and overtemperature. It can monitor the insulation resistance of the power grid, simulate leakage and short circuit tests, calculate zero sequence direction angle, total active power, and power factor, and comes with 8 DI, 6 DO, and 1 voltage type AI.
Technical Specifications
Input/output channel |
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Communication channel |
three-phase voltage (Ua、Ub、Uc) |
0~14VAC, 精度1%F.S. |
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three-phase current (Ia、Ib、Ic) |
0~14VAC, Rated at 1VAC, with an accuracy of 1% (1% below rated value and 1% above rated value) |
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Zero sequence voltage (U0) |
0~100VAC, 精度1%F.S. |
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Zero sequence current (I0) |
0~500 μ A or 0~1.5VAC, accuracy 1% F.S |
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System voltage (Usys) |
0~14VAC, 精度1%F.S. |
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signal frequency |
47~53Hz, The above accuracy (1% F.S.) is the accuracy at a signal frequency of 50Hz, and the worst accuracy in other frequency ranges is 6% F.S |
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Zero sequence power factor angle |
0~359 °, accuracy ≤ 3 ° |
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DI channel |
number of channels |
8 |
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performance metrics |
8-way DI (source or drain type, 24VDC) |
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DO channel |
number of channels |
6 |
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performance metrics |
6-way normally open, contact capacity 3A, resistive load |
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AI channel |
1 way AI |
0~10VDC voltage signal input, accuracy 1% F.S |
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1st resistance measurement R2 |
0~300K Ω, accuracy 3% F.S |
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1-channel leakage resistor Detecting RL |
Measurement range: 0~1MΩ |
0~100K Ω, accuracy:<3% |
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100k~1M Ω, accuracy:<5% | ||||
calculation parameters |
active power |
Three phase total active power P, accuracy 2% F.S |
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power factor |
COSφ, Accuracy 2% F.S |
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Technical Specifications
Power Specifications |
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system power |
input voltage |
87VAC~264VAC |
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power consumption |
15W |
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output power supply |
Additional DC detection: 44VDC/1mA |
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VO+、VO-:24VDC(2W) |
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earth leakage protection
Judgment criteria |
Rated operating voltage of main circuit (V) |
Leakage action resistance setting value (K Ω) |
Leakage lockout action resistance setting value (K Ω) |
Action time of 1K Ω resistor quick break module |
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The main switch is equipped with additional DC detection, The switch is used for zero sequence power directional detection (amplitude detection is also optional) |
380 |
3.5 |
7 |
≤30ms (Can be delayed) |
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660 |
11 |
22 |
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1140 |
20 |
40 |
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Explanation: When the insulation resistance rises to 1.5 times the blocking resistance, the switch automatically releases the blocking |
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