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China Multifunctional Power Instrument for Electrical Monitoring - Suppliers & Factory Direct
ⓘ Product Overview
Many kinds of extended function modules for choosing: one-channel analog quantity (0~20mA / 4~20mA) output can realize the transmitting output function of electrical quantity; two-channel switching value input and two-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.
- 🔌 Analog Output: 1-channel 0~20mA / 4~20mA transmitting output for electrical quantity
- 🔗 Switching Value: 2-channel input & 2-channel output for remote signaling & remote control
- ⚙ Modular Design: Flexible, economical configuration tailored to actual requirements
- 📈 Direct Replacement: Replaces conventional power transmitters and energy measuring instruments
🔢 Technical Parameters
| Category | Parameter | Index / Value | ||||
|---|---|---|---|---|---|---|
| Input | Network | — | Single Phase | |||
| 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 | ||||
| Input | Frequency | 45–65 Hz | ||||
| Output | Communication | Output Mode | — | RS485 | ||
| Protocol | — | MODBUS_RTU | ||||
| Baud Rate | — | 1200, 2400, 4800, 9600 | ||||
| Analog Quantity | Channel Quantity | — | 1 Channel | |||
| Output Mode | — | 0–20mA, 4–20mA | ||||
| Load Ability | — | ≤400Ω | ||||
| Switching Value | Channel Quantity | — | 2 Channels | |||
| Output Mode | — | Normally Open Relay Contact Output | ||||
| Contact Capability | — | AC 250V / 5A, DC 30V / 5A | ||||
| Output | Switching Value Input | 2 Channels | ||||
| Output | Display Mode | LED (Red) | ||||
| 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% (for reference only, not for metering) | |||||
| Reactive Energy | ±1.0% (for reference only, not for metering) | |||||
| Source | Scope | AC 220V, 50/60 Hz | ||||
| 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 | |||||
❓ Frequently Asked Questions
Q
What types of analog output does this instrument support?
The instrument supports one-channel analog quantity output with selectable modes of 0~20mA or 4~20mA, enabling transmitting output of electrical quantity for integration with external systems or PLCs.
Q
What communication protocol does the instrument use?
The instrument communicates via RS485 interface using the MODBUS_RTU protocol. Supported baud rates are 1200, 2400, 4800, and 9600 bps, making it compatible with most industrial automation and SCADA systems.
Q
Can this instrument replace a conventional power transmitter or energy meter?
Yes. This instrument is designed to directly replace conventional power transmitters, measuring indicating instruments, electric energy measuring instruments, and related auxiliary units, simplifying system upgrades and reducing installation costs.
Q
What is the measuring accuracy for voltage, current, and power?
The measuring accuracy for voltage and current is ±(0.5%FS + one digit). Active power and reactive power share the same accuracy of ±(0.5%FS + one digit). Frequency accuracy is ±0.1 Hz and power factor accuracy is ±0.01 PF.
Q
What are the operating and storage temperature ranges?
The instrument operates within a temperature range of -10°C to +50°C. For storage, the acceptable range is -25°C to +70°C. It should be used in environments with humidity below 85% RH, free from wet and corrosive gases, and at altitudes not exceeding 3000m.
Q
How many switching value input and output channels does the instrument have?
The instrument is equipped with 2 channels of switching value input and 2 channels of switching value output. The output uses normally open relay contacts rated at AC 250V/5A or DC 30V/5A, supporting both local and remote switch signal monitoring and control.