1. Brief introduction
LU-193 intelligent multi-function power meter is for measuring of three-phase power parameters, it has many functions, such as: programming, automatic measuring, Stroke segment LCD display, multi-rate energy accumulation, energy demand measuring, digital communication and so on. It can transform three-phase AC value into standardized digit value according to the linear relation. It has characteristic of digitization, intelligentization & networking, which makes the measuring process and the data analysis processing realizing automation, reduces human error. The power meter can comprehensively substitute power transducer, KWh meter, digital display meter, data acquisition unit and so on; it is an ideal product for the electric automatic system. It has compact structure, advanced circuit & powerful measuring function; it is a revolutionary design to the traditional meters.
LU-192 intelligent power meter is widely used in fields of electric device, automation control system and dispatching system, in industries of Power, Post and Telecommunication, Petroleum, Coal, Metallurgy, Railroad, Municipal administration, intelligent building…

2. Main technical parameters
◆ Accuracy:
Current/voltage: 0.2% RD; power: 0.5% RD; energy: 1.0% RD
◆ Display: Stroke segment LCD
◆ Measurement parameters:
Phase voltage, line voltage, current, active power, reactive power, apparent power, power factor, power factor angle, active electric energy, reactive electric energy, frequency
◆ Input
   Voltage: Rated voltage: AC420V/AC100V
           Over load: continued: 1.2 times; instant: 2 times (10 seconds)
           Power consumption: <0.5VA (per phase)
           Impedance: >1MΩ (per phase)
   Current: Rated current: AC5A/AC1A
           Over load: continued: 1.2 times; instant: 10 times (5 seconds)
           Power consumption: <0.4VA (per phase)
           Impedance: <20mΩ
   Frequency: 45~65Hz
◆ Output:
   Communication: RS232 or RS485
RS232 printer interface
   EP: Electric energy pulse output
◆ Connection mode:
   3-phase 4-line, 3-phase 4-line balance load, 3-phase 3-line, 3-phase 3-line balance load, 1-phase 2-line, 2-phase 3-line
◆ Multi-rate energy accumulation: 12 time slots, 4 rates and 4 programs
◆ Demand energy: U, I, P, Q, S slip
◆ Power: AC85～265V，DC85～330V (standard)
          AC30～60V，DC18～90V (optional)
          Consumption: <4VA
◆ Communication: RS485/RS232 communication interface
 Modbus-RTU protocol
◆ EMC
   Surge immunity test: GB-T 17626.5-1998 (Ⅳ)
EFT test: GB-T 17626.4-1998 (Ⅳ)
Radio-frequency, electromagnetic field immunity test: GB-T 17626.2-1998 (Ⅲ)
   Electrostatic Discharge Immunity Test: GB-T 17626.6-2008 (Ⅳ)   反了都还没有改20100831
   GB-T 17626 is in accordance with IEC 61000.
◆ Working environment: temperature: -10℃～+55℃; humidity: 20%～95%, without condensation
◆ Storage environment: temperature: -25℃～+85℃; humidity: 20%～95%, without condensation
 

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