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Allen-Bradley 193-EEGE is a high-performance electronic overload relay launched by Rockwell Automation, designed to provide comprehensive overload protection and monitoring functions for three-phase asynchronous motors. By accurately detecting motor current, temperature and other parameters, this relay realizes multiple protections such as overload, phase loss, locked rotor, and ground fault. It also supports remote communication and status monitoring, making it suitable for industrial scenarios requiring high-reliability motor protection, such as motor control circuits of pumps, fans, compressors and other equipment. It effectively extends motor service life and reduces production downtime caused by faults.
- Rated Current Range：The protection current range of 0.4A~60A can be set via DIP switches, supporting direct access or expansion to larger currents (maximum 600A) through current transformers (50:5, 100:5).
- Protection Functions：
- Overload protection: Inverse time characteristic (compliant with IEC 60947-4-1 standard), operating time can be set (10~30 seconds at 5×Iₑ).
- Phase loss protection: Triggered when phase current imbalance ＞30%, operating time ≤2 seconds.
- Locked rotor protection: Triggered when current ＞6×Iₑ, operating time ≤0.5 seconds.
- Ground fault protection: Triggered when ground current ＞50mA (external current transformer required).
- Over-temperature protection: Built-in ambient temperature compensation (-20℃~70℃), automatically corrects protection thresholds.
- Communication Interface：Integrated DeviceNet communication port, supports remote monitoring and parameter setting, communication rate 125kbps~500kbps.
- Power Supply：100V~240V AC wide voltage supply, frequency 50/60Hz, power consumption ≤8VA.
- Output Contacts：1 set of normally closed protection contacts (AC 250V/5A, DC 30V/5A), 1 set of normally open alarm contacts (same specification).
- Operating Environment：Operating temperature -20℃~70℃, storage temperature -40℃~85℃, relative humidity 5%~95% (non-condensing), protection class IP20 (installed in control cabinet).
- Mechanical Specifications：Width×height×depth approximately 70mm×100mm×120mm, DIN rail or panel mounted, compatible with 140M series circuit breakers.
- Certification Standards：UL 508, CSA C22.2 No.14, CE certified, compliant with IEC 60947-4-1 motor protection standard.
- Precise Protection Control：Adopts microprocessor control with current detection accuracy of ±2%, significantly improving protection accuracy compared to thermal relays (±10%), avoiding false actions or insufficient protection.
- Multi-Dimensional Fault Protection：Covers common motor faults such as overload, phase loss, locked rotor and ground fault; implements progressive intervention through hierarchical protection logic (warning→alarm→trip), reducing unnecessary downtime.
- Intelligent Communication Integration：DeviceNet communication enables real-time interaction with PLC and HMI systems, allowing remote reading of motor current, temperature, fault records and other data, facilitating predictive maintenance.
- Flexible Parameter Configuration：Sets protection thresholds, action time and other parameters via DIP switches or software (RSNetWorx); supports self-tuning function (automatically identifies motor rated current), simplifying debugging.
- Wide Adaptability：0.4A~600A current range adapts to motor protection needs from small water pumps (0.5kW) to large compressors (300kW), reducing types of spare parts.
- Water Treatment Industry：In control circuits of centrifugal pumps and submersible pumps in water plants, detects overload and phase loss faults, preventing motor burnout caused by pipeline blockage or impeller jamming.
- HVAC Systems：Protects fan motors of air conditioning units; combines with communication functions to enable building management systems (BMS) to centrally monitor fan operation status and handle overload alarms in time.
- Manufacturing Production Lines：Protects drive motors of conveyors and mixers; quickly cuts off power when material jamming (locked rotor) occurs, avoiding overheating damage to motor windings.
- Petrochemical Industry：In oil pump and compressor motor circuits, resists on-site vibration and temperature fluctuations, stably executes overload protection, meeting safety requirements of explosive areas (with explosion-proof enclosure).
- Agricultural Irrigation：Adapts to motor control of irrigation pumps; timely acts on phase loss caused by unstable voltage, ensuring continuous operation of irrigation systems.
- Ensure correct phase sequence of three-phase current transformers during wiring; current incoming direction must match relay markings, otherwise protection false actions may occur.
- The self-tuning function must be executed under motor no-load condition; the motor will run briefly (about 10 seconds) during tuning, ensuring on-site safety.
- When used with contactors, relay output contacts should connect to contactor coils; avoid direct control of high-current loads to prevent contact burning.
- Regularly (semi-annually recommended) check protection parameters and fault records via communication software; clean dust on the relay surface to ensure good heat dissipation.
- For ground fault protection, correctly install zero-sequence current transformers; the transformer must enclose three phase lines and neutral line of the motor power supply to avoid protection failure due to missing wires.
The structure and details of the product：
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