Summarize
Single-phase smart ammeter can measure single-phase current in
power grid with high precision, and optional 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.
PeculiarityMeasurement: single phase current
Display: a row of LED digital tube display, high visibility
Communication: RS485 communication, MODBUS-RTU communication
protocol (optional)
Output: Two relay outputs (optional)
Expansion: Input signal can be directly from the current and
transformer, and the input parameter ratio can be programmed on
site
Application: Suitable for power grid, automatic control system,
mainly measure the current parameters in power grid
Product model and size
| Model number | CQ42-□I | CQ96-□I | CQ80-□I | CQ72-□I | CQ48-□I | CQ45-□I |
| Face frame size | 120*120 | 96*96 | 80*80 | 72*72 | 48*96 | 72*72 |
| 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 |
