● Auxiliary power supply type is optional, AC220V or AC380V
● Rated Voltage: AC220V / 380V / 660V, 50Hz / 60Hz
● Optional leakage protection, RS485 communication, analog output, etc.
● 2-63rd harmonic; 2 MODBUS-RTU communication
● 10 programmable DI inputs
● 6 programmable DO outputs
General
ARD3M intelligent motor protector (hereinafter referred to as the protector) is suitable for low-voltage motor circuits with rated voltage up to 660V and integrates protection, measurement, control, communication, operation and maintenance. Its perfect protection function ensures the safe operation of the motor, with logic programmable function, can meet a variety of control methods. Different communication modules can be selected to meet the needs of field communication.
Function
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Protection Type (Default Active Period) |
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Whole Course: Overvoltage, undervoltage, voltage imbalance, phase sequence, external fault, overflow protection, starting times, fault times, running time, PTC/NTC temperature protection, insulation monitoring |
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When Starting: Reverse time overload, blocking, phase break, leakage, grounding, starting timeout, short circuit, overflow protection, Overvoltage, undervoltage, voltage imbalance, phase sequence, external fault, number of starts, number of faults, running time, PTC/NTC temperature protection, fixed time overload, insulation monitoring |
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In Operation: Reverse time-limit overload, blocking, phase break, current imbalance, leakage, grounding, constant time-limit overload, under load, short circuit, overflow protection, overvoltage, undervoltage, voltage unbalance, phase sequence, underpower, overpower, external fault, PTC/NTC temperature protection, number of starts, number of faults, running time, insulation monitoring |
Dimension
Front Panel
Wiring
Installation Dimension
FIG. 1 Composition of products with 100A and below specifications
FIG. 2 Composition of 250A and 800A
FIG. 3 Assembly diagram of main body and optional communication module
When install the meter, loosen the locking screw of the fixing bracket, remove the fixing bracket, insert the instrument into the mounting hole, install the fixing bracket and tighten the screw to make the instrument be firmly installed without loosening. Shape for clamp reed squeeze installation.
Matched Transformer
The current transformer with the current specification of the protector is 100A, with the standard secondary connection line length of 1m±10cm. If other lengths are needed, please contact the manufacturer, for example, 3m and 5m lines are optional.The secondary lines of yellow, blue, red and black correspond to to the correlation of current A, B, C and the common end of the transformer. A protector is equipped with A set of transformer.
The current specification of the protector is the current transformer matched at 250A. There is no secondary connection wire. One protector is equipped with three transformers.
The protectors with current specifications of 100A and below are equipped with leakage current transformers with specifications of L-45.250A and current protector with specifications L-80 leakage current transformer; 800A and current specification protector with L-150 leakage current transformer. The leakage transformer is equipped with a secondary wire of 2m±10cm. If other lengths are needed, please contact the manufacturer.
Typical Connection
