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- Power Meters[2]
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- Contact Person : Mr. Wang Callven
- Company Name : Zhejiang Tianqi Electric Co., Ltd.
- Tel : 86-572-5815028
- Fax : 86-572-5118861
- Address : Zhejiang,Huzhou,Tianzi Lake Industrial zone,Gaoyu,Anji,Huzhou,Zhejiang,China
- Country/Region : China
- Zip : 313310
Multifunctional network power instrument
This series meter has all the functions of SFDB series digital programmablemeters.It can measure almost more than 30 electrical parameters including of three-phase voltage,three-phase current,active power,reactive power,apparent power,frequency,power factor and 4-quadrant energy etc;It displays through 3-row 4-digit or 2-row 6-digit LED nixietubes or LCD screen.It is added with keyboard parameters such as alarm and transmitting output object,alarm delay time ,display object and cycle display time and 2-channel electric energy pulse outputs,4-channel switching value input and 4-quadrant energy measuring functions.The alarm(or switching value)output and transmitting output can enlarge to four channels.
Basic Parameters:
Input Parameters:
Rated voltage:AC 57.7V,100V,220V,380V
Rated current:AC 1A,5AFrequency range:45~65HZ
Input network:3-phase3-wire,3-phase4-wire
Accuracy of measurement:
voltage,current,active power.reactive power,apparent power:±0.5%
Frequency:±0.1Hz Power factor:±0.01PF
active electric energy:±0.5% reactive electric energy:±2.0%
Start:On the condition of rated voltage,reference frequency and COSΦ=1.0,
when load operational current is 0.001In,it can start and measure
the electrical quantity continuously.
Creep:When exerting 115%rated voltage and no current in the current
circuitry, the instrument is with no electrical quantity accumulation
and pulse output.
Output parameters:
Pulse output:open-collector optical coupling output,open-collector voltage
VCC≤48V,current Lz≤500mA
Pulse constant:10000imp/kWh or 10000imp/kvarh.The meaning is:the
pulse output 10000imp when the meter accumulate to
1kWh,it stresses that,1kWh is quadratic electric quantity
data of elecric quantity.Under the cndition of PT and CT,
the N pulse data responding the primary electric
energy=1kWh×PT ratio×CT ratio
Alarm(or switching value)output:4-channel relay normally open contact
output,30VDC/1A,240VAC/1A(resistive load)
Switching value input:4-channel dry contact(built-in+5V source)
Analog quantity transmitting output:can provide4-channel outputs at the same time
Output range:DC 0~20mA/4~20mA programmable
Accuracy:±0.5%
Overload:120% actual output,Max current is 24mA
Load:≤400Ω
Communication interface:RS485 serial
communication,applying MODBUS_RTU communication protocol
Multifunctional network power instrument
