JinZhi Technology LPC-3531 Low Voltage Motor Comprehensive Protection and Control Device

1. Product Purpose and Features
Both LPC-3531/3532 are comprehensive protection and control devices for low-voltage motors, providing various start and
stop control functions, protection, and monitoring functions for low-voltage motors (380V). Among them, the LPC3531 device's current acquisition is configured with standard CTs (as secondary
CTs, available in 1A and 5A ratings, using terminal wiring); the LPC3532 device's current acquisition is configured with ** CTs (which can serve as
primary CTs, available in various ratings such as 1A, 5A, 25A, 100A, 150A, 250A, and 400A, with cable through-core wiring). For the structure, features, technical data, dimensions, etc., of the LPC-3531/3532
devices and various specifications of CTs, please refer to the "LPC-3500 Series Low Voltage Comprehensive Protection and Control Device Overview." This device can be optionally equipped with the LPC-3597 display and operation module to achieve related display and operation functions.
Protection Functions
1. Overheat Protection
2. Overload Protection (selectable definite-time or inverse-time curve)
3. Phase Loss (Unbalance) Protection
4. Ground Fault Protection (self-generated, optional external zero-sequence)
5. Locked Rotor Overcurrent Protection
6. Extended Start Time Protection
7. Underload Protection
8. External Fault Interlock Protection
9. TE Time Protection
10. Contactor Breaking Current Protection (Overflow Fault)
11. Underpower Protection
12. Fuse Break Alarm
13. Undervoltage Protection
14. Overvoltage Protection
15. Phase Sequence Protection
16. Instantaneous Overcurrent Protection
Measurement Functions
1. 12-channel remote signal input collection
2. Up to 7-channel relay output control
3. Three-phase current and voltage angles, etc.
Control Functions
Provides various control modes:
1. Protection Mode A (dual relay control)
2. Direct Start A (dual relay control)
3. Reversing Start A (dual relay control)
4. Star-Delta Start Mode
5. Protection Mode in Coordination with Circuit Breakers
6. Direct Start Mode in Coordination with Circuit Breakers
Additionally, the device also provides undervoltage restart control function for motors.
Communication Functions (Optional)
1. Multiple communication methods: RS485, CAN, PROFIBUS, supporting dual networks
2. Multiple communication protocols: IEC103, MODBUS, PROFIBUS-DP
Other Functions
1. 1 channel of 4～20mA DC analog output, replacing transmitters as a DCS measurement interface (optional)
2. The device is equipped with a GPS clock synchronization interface to ensure the device's clock is synchronized with the system
3. Event recording, fault waveform recording, etc.