JinZhi Technology LPC-3511 (3512) Low-Voltage Line Comprehensive Protection and Control Device

1. Product Purpose and Functions
Both LPC-3511 and LPC-3512 are comprehensive protection and control devices for low-voltage lines, used for the integrated protection and control of feeders and branches. Among them, the LPC-3511 device is configured with standard CTs for current acquisition (as secondary CTs, available in 1A and 5A ratings, using terminal connections); the LPC-3512 device is configured with dedicated CTs for current acquisition (can serve as primary CTs, available in various ratings such as 1A, 5A, 25A, 100A, 150A, 250A, and 400A, with cable through-core connections). For the device's structure, features, technical data, dimensions, etc., please refer to the "LPC-3500 Series Low-Voltage Comprehensive Protection and Control Device Overview." The device can be optionally equipped with the LPC-3598 display and operation module to achieve related display and operation functions.
The device has the following functions:
 Protection Functions
 Stage 1 Overcurrent Protection (Low-Voltage Blocked Stage 1 Overcurrent)
 Stage 2 Overcurrent Protection (Low-Voltage Blocked Stage 2 Overcurrent)
 Stage 3 Overcurrent Protection
 Ground Protection (Self-Generated, Optional External Zero-Sequence)
 Overload Protection
 Reacceleration Protection
 Undervoltage Protection
 PT Disconnection Alarm
 Measurement and Control Functions
 12-channel input acquisition, device remote signaling change, accident remote signaling
 Up to 7 relay output controls
 AC quantity acquisition: three-phase voltage, three-phase current, zero-sequence current, active power, reactive power, power factor, frequency
 Device self-diagnosis alarm
 Energy integration function for electricity metering
 Circuit breaker opening and closing control function
 Communication Function (Optional)
 Multiple communication methods: RS485, CAN, PROFIBUS, supporting dual networks
 Multiple communication protocols: IEC103, MODBUS, PROFIBUS-DP