| Brand | Rw Energy |
| Model NO. | 0 to 800Amp Motor Protection Controller |
| Rated frequency | 50/60Hz |
| Series | ARD3 |
General
ARD3 smart motor protectors can protect motors from many faults during the motor running and display the running state clearly and intuitively through LCD.The protector has RS485 remote communication interface and DC4-20mA analog output, which is convenient to form a network system together with control machines like PLC and PC.
Feature
U, I, P, S, PF, F, EP, Leakage, PTC/NTC
16 protect function
Start control function
9 programmable DI
5 programmable DO
Modbus-RTU or Profibus-DP communication
1 DC4-20mA analog output
20 fault record
Anti-shaking function
Parameters
Technical parameters |
Technical indicators |
|
Protector auxiliary power supply |
AC85-265V/DC100-350V,power comsumption 15VA |
|
Rated working voltage of the motor |
AC380V / 660V, 50Hz / 60Hz |
|
Rated operating current of the motor |
1 (0.1A-5000A) |
Small special current transformers |
5 (0.1A-5000A) |
||
25（6.3A-25A） |
||
100（25A-100A） |
||
250（63A-250A） |
Special current transformers |
|
800（250A-800A） |
||
Relay output contact capacity |
Impedance load |
AC250V、10A |
Relay output contactor, |
5 channels,AC 250V 6A |
|
Switching input |
9 channels,opto-coupler isolation |
|
Communication |
RS485 Modbus_RTU, Profibus_DP |
|
Environment |
Working temperature |
-10ºC～55ºC |
Storage temperature |
-25ºC～70ºC |
|
Relative humidity |
≤95﹪No condensation, no corrosive gas |
|
Altitude |
≤2000m |
|
Pollution levels |
Class 2 |
|
Protection grade |
Main body IP20, split display module IP54 (installed on the cabinet panel) |
|
Installation category |
Level III |
|
Dimensions
Typical Connection
For current levels of 250A and above (such as 800A), a dedicated external current transformer (CT) should be used in conjunction, and ARD3 ensures measurement and protection accuracy through a high-precision sampling circuit.
In addition to basic protection, ARD3 also has energy metering (EP), power factor, voltage/current harmonic monitoring, 20 fault records, anti shake algorithm, and supports 9 DI/5 DO channels, suitable for intelligent distribution scenarios.
The main protection level is IP20, and the split display module can reach IP54 (can be installed on cabinet doors), suitable for industrial environments ranging from -10 ° C to+55 ° C and altitude ≤ 2000m.
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