Skip to content

Multifunction Power Meter​

The LSIN series is an intelligent multifunction power meter independently developed by our company. It adopts advanced microprocessor and digital signal processing technologies, integrating digitalization, intelligence, and networking into one. It offers high measurement accuracy, an attractive design, and strong electromagnetic compatibility, and can fully replace traditional analog and digital meters. It also serves as a terminal component in power monitoring systems, enabling remote data acquisition and monitoring.

Main Features

  • Programmable settings
  • Automated measurement
  • LCD display
  • Energy accumulation
  • Harmonic measurement
  • Event recording
  • Digital input for remote signaling
  • Digital output for remote control
  • Digital communication
  • Flexible I/O functionality for distributed RTU applications
  • Integration of remote signaling, remote measurement, remote adjustment, and metering

Applications

  • Switchgear
  • Power distribution systems
  • Panel control
  • Energy management systems
  • Building control systems
  • Power station monitoring systems
  • Process control systems
  • Distribution boxes

Technical Data

  • Operating Environment

Altitude: ≤2000m
Operating Temperature Range: -10℃ to +60℃
Storage Temperature Range: -40℃ to +85℃
Relative Humidity: 5~95%, no condensation
No harmful gases or flammable/explosive substances in the surrounding environment

  • Input Signal

Network: Three-phase four-wire (three-phase three-wire) / Single-phase
Voltage Rated Value: AC100V, 400V
Voltage Overload: Long-term overload 1.2 times; short-term overload 2 times (60s)
Voltage Power Consumption: <1VA (per phase)
Voltage Impedance: >300kΩ
Voltage Accuracy: True RMS measurement, accuracy class 0.2
Current Rated Value: AC1A, 5A
Current Overload: Long-term overload 1.2 times; instantaneous overload 10 times (5s)
Current Power Consumption: <0.4VA (per phase)
Current Impedance: >200mΩ
Current Accuracy: True RMS measurement, accuracy class 0.2

  • Measurement Display

Frequency: 40~55Hz, accuracy 0.05Hz
Power: Active, reactive, apparent power, accuracy class 0.5
Energy: Four-quadrant metering, active accuracy class 0.5, reactive accuracy class 1.0
Display: Segment display (LCD display), content can be switched or displayed in a loop

  • Working Power Supply

Working Range: AC 85V~265V / DC 90~300V
Power Consumption: ≤5VA

  • Extended Functions

Communication Interface: RS485, MODBUS-RTU protocol
Switching Signal Interface: DI passive dry contact input, DO output (DO can be set for limit alarm output)
Pulse Output
Transmitter Output: DC 4~20mA, class 0.5

  • Safety

Withstand Voltage: Input, output, and power >2kV
Insulation: Input, output, and power to the casing >100MΩ

  • Installation

Dimensions (H×W)
LSIN-9: 96×96mm
LSIN-7: 72×72mm
LSIN-4: 48×48mm

Panel Opening Dimensions
LSIN-9: 91×91mm
LSIN-7: 67×67mm
LSIN-4: 45×45mm