0102030405
Multifunctional LED Power Instrument: High-Precision Electrical Monitoring from China Suppliers and Factory
Product Overview
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, simple wiring, small quantity, programmable input parameters and capable of the network with different PLC, industry control computer communications.
- โก4-Channel Analog Output: 0~20mA / 4~20mA for electrical quantity transmitting
- ๐Switching Value I/O: 4-channel input & 4-channel output for remote signaling & control
- ๐Direct Replacement: Replaces conventional power transmitters & energy measuring instruments
- ๐ญWide Applications: Energy management, distribution automation, switchgear, district power control
- ๐Network Compatible: Works with PLC & industrial control computers via RS485 / MODBUS-RTU
- ๐กModular Design: Cost-effective, programmable, flexible configuration
Technical Parameters
| 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 | >500kฮฉ | ||
| Current | Rated value | AC 1A, 5A | |
| Over load | Consistent: 1.2 times instantaneous, 2 times 1s | ||
| Impedance | <2mฮฉ | ||
| Frequency | 45โ65Hz | ||
| Output | Electric Energy | Output mode | Two-channel open-collector, optical coupling pulse output |
| Pulse constant | Active: 3200 imp/kWh Reactive: 3200 imp/kvarh |
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| Start | On the condition of rated voltage, reference frequency and cosฯ=1.0, when load operational current is 0.01In, it can start and measure the electric energy continuously. | ||
| Creep | When exciting 115% rated voltage and no current in the current circuitry, the instrument is with no electric energy accumulation and pulse output. | ||
| Technical Parameters | Index | ||
| Output | Communication | Output mode | RS485 |
| Protocol | MODBUS_RTU | ||
| Baud rate | 1200, 2400, 4800, 9600 | ||
| Analog Quantity | Channel quantity | 4 channels | |
| Output mode | 0โ20mA, 4โ20mA | ||
| Load ability | <400ฮฉ | ||
| 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 | LED (RED) | ||
| Measuring Accuracy | Voltage, Current | ยฑ (0.5%FS + one digit) | |
| Active power, Reactive power | ยฑ (0.5%FS + one digit) | ||
| Frequency | ยฑ 0.1Hz | ||
| Power factor | ยฑ 0.01PF | ||
| Active energy | ยฑ 0.5% (only for reference, not for meterage) | ||
| Reactive energy | ยฑ 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 >20Mฮฉ | ||
| Environment | Temperature | Operation: -10 ~ 50ยฐC | |
| Storage: -25 ~ 70ยฐC | |||
| Humidity | โค85%RH, free of wet and corrosive gas | ||
| Elevation | โค3000m | ||
| Function & Shape / Model | Measure & Display |
Shape Code (Figure Inside โก) |
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 | โจ 96ร96 | โง 80ร80 | โฆ 72ร72 | Communication RS485 | 4-ch Switch Outputs | 4-ch Switch Inputs | 4-ch Analog Output | Harmonic | |||
| SFS-โกS3-3E | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | ||||||||||||
| SFS-โกSY-3E | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | |||||||||
| SFN-โกS3-3E | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | |||||||||||||
| SFN-โกSY-3E | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | |||||
| SFN-โกS3-3E+4DO | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | + | |||||||||||
| SFN-โกSY-3E+4DO | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | + | ||||||
| SFN-โกS3-3E+4DI | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | + | |||||||||||
| SFN-โกSY-3E+4DI | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | + | ||||||
| SFN-โกS3-3E+4AO | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | + | |||||||||||
| SFN-โกSY-3E+4AO | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | + | ||||||||
| SFN-โกSY-3E+H | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | โ | + | + | |||||||
Frequently Asked Questions (FAQ)
โWhat communication protocols does this power meter support?
The instrument supports RS485 communication interface with MODBUS-RTU protocol. It supports baud rates of 1200, 2400, 4800, and 9600 bps, making it compatible with a wide range of PLCs and industrial control computers.
โWhat are the available analog output options?
The instrument provides 4-channel analog output with selectable modes of 0โ20mA or 4โ20mA. The load ability is less than 400ฮฉ, making it suitable for transmitting electrical quantity signals to remote monitoring systems.
โWhat panel sizes are available for this instrument?
The instrument is available in three standard panel sizes: 96ร96mm (Shape Code โจ), 80ร80mm (Shape Code โง), and 72ร72mm (Shape Code โฆ). Users can select the appropriate size based on their installation requirements.
โWhat is the measuring accuracy for voltage, current, and power?
The instrument achieves ยฑ(0.5%FS + one digit) accuracy for voltage, current, active power, and reactive power measurements. Frequency accuracy is ยฑ0.1Hz, power factor accuracy is ยฑ0.01PF, and energy measurement accuracy is ยฑ0.5% for active energy and ยฑ1.0% for reactive energy (for reference only, not for billing/meterage).
โWhat switching value input and output options are supported?
The instrument supports 4-channel dry contact switching value input and 4-channel normally open relay contact output (AC 240V / 2A). These enable local or remote switch signal monitoring and control, fulfilling "remote signaling" and "remote control" functions.
โWhat are the power supply requirements and operating environment conditions?
The instrument requires an AC 220V, 50/60Hz power supply with a consumption of less than 5VA. It operates in temperatures from -10ยฐC to 50ยฐC, with storage temperatures from -25ยฐC to 70ยฐC. Humidity should be โค85%RH with no corrosive gas, and the installation elevation should not exceed 3000m.