Multifunctional Power Instrument LCD: China Suppliers & Factory for Accurate Electrical Monitoring Solutions

Technical parameters

Index

Input

Network

Three-phase three-wire, three-phase four-wire

Voltage

Rated value

AC 0~500V

Over load

Consistent 1.2 times instantaneous, 2 times / 30s

Consumption

<0.5VA (each phase)

Impedance

>500kΩ

Current

Rated value

AC 1A, 5A

Over load

Consistent: 1.2 times instantaneous, 2 times / 1s

Impedance

<2mΩ

Frequency

45–65Hz

Output

Electric energy

Output mode

Two-channel open-collector, optical coupling pulse output

Pulse constant

Active: 3200 imp/kWh
Reactive: 3200 imp/kVARh

Start

On the condition of rated voltage, reference frequency and cosφ=1.0, when load operational current is 0.01In, it can start and measure the electric energy continuously.

Creep

When executing 115% rated voltage and no current in the current circuitry, the instrument has no electric energy accumulation and pulse output.

Output

Communication

Output mode

RS485

Protocol

MODBUS_RTU

Baud rate

1200, 2400, 4800, 9600

Analog quantity

Channel quantity

4 channels

Output mode

0–20mA, 4–20mA

Load ability

<400Ω

Switching value

Channel quantity

4 channels

Output mode

Normally open relay contact output

Contact capability

AC 240V / 2A

Switching value input

Four channel dry contact input modes

Display mode

LCD (Blue backlighting)

Measuring accuracy

Voltage, current

± (0.5% FS + one digit)

Active power, reactive power

± (0.5% FS + one digit)

Frequency

± 0.1 Hz

Power factor

± 0.01 PF

Active energy

± 0.5% (only for reference, not for meterage)

Reactive energy

± 1.0% (only for reference, not for meterage)

Source

Scope

AC 220V, 50/60Hz

Consumption

<5VA

Safety

Withstand voltage

Input and source

>2kV 50Hz / 1min

Input and output

>1kV 50Hz / 1min

Output and source

>2kV 50Hz / 1min

Insulating resistance

Any two of input, output, source, casing >20MΩ

Environment

Temperature

Operation: -10 ~ 50°C

Storage: -25 ~ 70°C

Humidity

≤85% RH, free of wet and corrosive gas

Elevation

≤3000m

Function & Shape / Model

Measure & Display

Shape Code (Figure Inside)

Selected Additional Functions

Phase Voltage V

Line Voltage

Current

Frequency

Power Factor

Active Power

Total Reactive Power

Total Apparent Power

Each Phase Power Factor

Each Phase

Apparent Power

Active Energy

Reactive Energy

⑨ 96×96

⑧ 80×80

⑦ 72×72

Communication Interface: RS485

4-Channel Switch Outputs

4-Channel Switch Input

4-Channel Analog Output

Harmonic

SFS-□S3-3E

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SFS-□SY-3E

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SFN-□S3-3E

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SFN-□SY-3E

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SFN-□S3-3E+4DO

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SFN-□SY-3E+4DO

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SFN-□S3-3E+4DI

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SFN-□SY-3E+4DI

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SFN-□S3-3E+4AO

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SFN-□SY-3E+4AO

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SFN-□SY-3E+H

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