Summarize
Three-phase intelligent voltmeter can measure the three-phase
voltage in the power grid with high precision, and optionally with
RS485 communication function and upper and lower limit alarm
function. It has the characteristics of easy connection and
installation, simple wiring, convenient maintenance, small
engineering amount, field programmable setting input parameters,
etc., and can complete the network communication of PLC and
industrial control computer different from the industry.
Peculiarity
Measurement: Three-phase voltage
Display: three rows of LED digital tube display, high visibility
Communication: RS485 communication, MODBUS-RTU communication
protocol (optional) Output: two relay output
Expansion: can be directly from the current, transformer input
signal, field programmable setting of input parameter ratio Use:
suitable for power grid, automatic control system, mainly measure
the voltage parameters in the power grid
Product model and size
| Model number | CQ42-3U | CQ96-3U | CQ80-3U | CQ72-3U | CQ48-3U | CQ45-3U |
| Face frame size | 120*120 | 96*96 | 80*80 | 72*72 | 48*96 | 48*48 |
| Opening size | 111*111 | 91*91 | 76*76 | 67*67 | 45*91 | 45*45 |
Technical index
| Argument |
| Accuracy level | Power metering: Active power 0.5, reactive power 1.0, converter
output 0.5 |
| Display mode | LCD display / 12-bit LED display |
| The signal is entered | Measurement network | Three-phase four-wire V34/ three-phase three-wire V33 |
| Voltage | Rated value | AC380V/AC100V |
| Overload | Duration: 1.2 times instantaneous: 2 times (10 seconds) |
| Power dissipation | <1VA(per phase) |
| Impedance | >300kΩ |
| Electric current | Rated value | AC5A/AC1A |
| Over duty | Duration: 1.2 times instantaneous: 2 times (10 seconds) |
| Power dissipation | <0.4VA(per phase) |
| Impedance | < 2 m Ω |
| Frequency | 45-65Hz |
| Harmonic wave | Voltage and current total harmonic content and 3-15 odd harmonic
components |
| Electric energy | Bidirectional active and reactive energy metering |
| Power source | Scope of work | AC/DC85~264V |
| Power dissipation | <5VA |
| Work and energy modules | Electrical energy pulse | Passive optocoupler output |
| Communication interface | Two RS485 communication ports, Modbus-RTU communication protocol |
| Communication baud rate: 4800-9600, no parity check N81, E81, or
081 |
| The second RS485 communication port can be configured as
PROFIBUS-DP |
| Switching input | Passive dry junction input |
| Switching output | Over limit alarm or remote relay output capacity AC5A/250V,DC5A/30V |
| Converter output | 0~20mA/4~20mA/0~5V/1~5V converter output, programmable setting of
converter items and corresponding output values |
| Working environment | Ambient temperature: -10~55℃, relative humidity <93%, no
corrosive gas place, altitude <2500M |
| Storage environment | -20~75℃, relative humidity ≤93% |
| Clock error | < 0.5 s/d |
| Secure | Insulation | The resistance of signal, power and output terminals to the shell
is >100MΩ |
| Withstand voltage | Input voltage >2kV, input and output >1kV, power supply and
output >2kV
|
