MultiFunction Meter

SANDS Multifunctional network electrical instrument is specifically designed and made for the electrical monitoring requirement of power distribution system. It is with high-precision measurement all of the common electrical parameters including of three-phase voltage, three-phase current,active power, reactive power, frequency, power factor and four-quadrant energy ete; Long-life LED display the instrument measuring parameters and operation information of network system; RS485 communication interface, applying MODBUS RTU communication protocol; with four programmable keys on the instrument panel, convenient switch, programmable setting of instrument parameters with great flexibility.

Many kinds of extended function modules for choosing: four-channel analog quantity (0 -20mA/4-20mA) output can realize the transmitting output function of electrical quantity; four-channel switching value input and four-channel switching value output to realize the local or long-range switch signal monitoring and control output function (function of “remote signaling” and “remote control”) . The instrument can directly replace conventional power transmitter, measuring indicating instrument, electric energy measuring instrument and the related auxiliary unit. With modular structural design, users can choose the most economical functional configuration according to the actual requirement, which is highly cost-effective.

It is widely used in occasions of energy management systems, supply and distribution network automation, district power control and complete sets of switchgear. It has the advantages of convenient installment and maintenance, sample wiring, small quantity, programmable input parameters and capable of the network with different PLC, industry control computer communications software.

Features

Technical parameters Index
Input Network Three-phase thre-wire, three-phase four-wire
Voltage Rated value AC 57.7V, 100V, 220V, 380V
Over load Consistene: 1.2 times instantaneous: 2 times/30s
Power consumption  < 0.5VA(each phase)
Impedence > 500k ohm
current Rated value AC 1A, 5A
Power consumption Consistene: 1.2 times instantaneous: 2 times/30s
Impedence <20m ohm (each phase)
Frequency 45-65Hz
OUTPUT Electric
Energy
Output mode Two-channel open-collector optical couplng pulse output
pulse constant Active 10000imp/kwh
Reactive 10000imp/kvarh
Start On the condition of rated voltage,
Reference frequency and
COSj=1.0, when load operational
Current is 0.001in, it can start and
Measure the electrical quantity
Continuely.
Creep When exerting 115% rated voltage and
No current in the current circuitry, the
Instrument is with no electrical quantity
Accumulation and pulse output.
communication Output mode  RS485
Protocol MODBUS_RTU
Baud rate 1200, 2400,4800, 9600
Analog
Quantity
Channel quantity Four
Output mode 0-20mA,4-20mA Programmable
Load ability  ≤300ῼ
Channel quantity Four
Switching
Value
Output mode Normally Open Relay contact output
Contact rating AC 250V/1A
Switching Value Input Four dry contact input mode
Display mode LED display
Measuring
Accuracy
Voltage current ±(0.5%FS+1digit)
Active power, Reactive power Apparent power ±(0.5%FS+1digit)
Frequencty ±0.1Hz
Power factor ±0.01PF
Active electric energy ±0.5%
Reactive electric energy ±0.2%
Power
Supply
Scope AC/DC 85~264V
Power consumption <5VA
Safety Withstand
Voltage
Input and power supply >1kV50Hz/1min
Input and output >1kV50Hz/1min
Output and power supply >1kV50Hz/1min
insulating resistance Any two of input, output, power supply, casing>20Mῼ
Environment Temperature Operation: -10~50ºC
Storage: -25~70ºC
Humidity ≤85%RH, free of wet and gas corruption
Elevation ≤3000m
Shape 96 X 96