Опис
ЦИС0307-3/3 meter is designed for measuring electrical parameters of three-phase three-wire alternating current networks: line voltages, phase currents, active and reactive power, power factor, frequency.
The meter provides an indication of the direction of active energy transfer, information exchange through the RS–485 interface (hereinafter referred to as the interface), has an analog output of 4–20 mA and three relay outputs (closing the relay contacts when the monitored value reaches a preset value).
Using the control buttons located on the front panel of the meter and (or) through the interface, it is possible to set the measurement range, taking into account the transformation coefficients for voltage (for voltage transformers with a nominal voltage of the secondary winding of 100 V) and for current (for current transformers with a nominal current secondary winding 1 A or 5 A), parameters of relay and analog outputs, network address and select the parameters that will be displayed on the indicators.
Designation of the meter when writing in the documentation and order:
CIS0307 – 3/3 – Y – X (where X is the nominal secondary current of the transformer – 1 A or 5 A; Y – the nominal voltage of the controlled network – 100 V, 220 V, 380 V)
Working conditions of application:
- ambient air temperature from minus 30 ºС to plus 50 ºС;
- relative air humidity up to 90% at a temperature of 25 ºС;
The meter is used at energy and industrial facilities to monitor the electrical parameters of networks.
The ability to exchange information through the interface and the availability of analog and relay outputs makes it possible to use the meter in automated systems of various purposes.
Technical characteristics
Indication of the meter’s measurement results is digital on three four-digit floating-point LED indicators.
The nominal values of the parameters measured by the meter and the measurement ranges of these parameters are given in the table:
|
Measured quantity |
Technical characteristics | Normalized values for performances | |||
|
ЦИС0307 – 3/3 – |
|||||
|
380-5 |
380-1 | 100-5 |
100-1 |
||
|
Current value of the phase voltage *, V |
Measuring range | 30-250 | 30-250 | 10-70 | 10-70 |
|
Nominal value |
220 | 220 | 57,73 |
57,73 |
|
| The effective value of the line voltage, V | Measuring range | 50-450 | 50-450 | 20-120 |
20-120 |
| Nominal value | 380 | 380 | 100 |
100 |
|
|
Actual value of the phase current, A |
Measuring range | 0,05–5,0 | 0,01-1,2 | 0,05-5,0 | 0,01-1,2 |
|
Range of readings |
0 – 6,0 | 0 – 1,2 | 0 – 6,0 |
0 – 1,2 |
|
| Nominal value | 5 | 1 | 5 |
1 |
|
|
Phase active, W, reactive-on, var, power |
Measuring range | 1,5-1375 | 0,3-300 | 0,5-385 | 0,1-84 |
| Nominal value | 1100 | 220 | 290 |
58 |
|
|
Total active, W, reactive, var, power |
Measuring range | 4,5-4125 | 0,9-900 | 1,5-1155 | 0,3-252 |
| Nominal value | 3300 | 660 | 870 |
175 |
|
|
Phase coefficient of active power, cos φ |
Measuring range | -0,5-1-0,5 | -0,5-1-0,5 | -0,5-1-0,5 | -0,5-1-0,5 |
| Nominal value | 1 | 1 | 1 |
1 |
|
|
Total coefficient of active power, cos φ |
Measuring range | -0,5-1-0,5 | -0,5-1-0,5 | -0,5-1-0,5 | -0,5-1-0,5 |
| Nominal value | 1 | 1 | 1 |
1 |
|
|
Network frequency, Hz |
Measuring range | 40-65 | 40-65 | 40-65 | 40-65 |
| Nominal value | 50 | 50 | 50 |
50 |
|
The power supply of the meter is carried out from 100 V to 250 V of constant voltage or variable frequency (50 ±2) Hz. The power consumed by the meter from the power supply network does not exceed 5 V·A.
The input current of the voltage measurement circuit does not exceed 0.4 mA.
The input resistance of the current measurement circuit does not exceed 0.2 Ω.
The meter belongs to measuring equipment of accuracy class 0.5 according to DSTU OIML R 34:2014 Accuracy classes of measuring equipment.
The limits of the permissible reduced basic measurement error of voltage, current, active and reactive power, frequency, active power factor do not exceed 0.5% of the nominal value of the corresponding parameter.
The meter has three relay outputs, which ensure the closing of the relay contacts when the monitored value reaches the set value.
The controlled parameter, value and type (lower or upper) of the setting is set using the control buttons located on the front panel of the meter or through the interface.
The meter has an RS–485 interface for communication with external devices. MODBUS RTU exchange protocol. The exchange rate is 9600 baud. The meter can have a network address from 1 to 255.
The meter has a 4 – 20 mA analog output for controlling an external actuator or relaying an input signal. The output current change range is from 4 mA to 20 mA when the controlled value changes from zero to the final value of the measurement range of the selected parameter, and when measuring the active power factor – from zero to unit by module.
The load resistance should not exceed 500 Ω.
The overall dimensions of the meter are no more than 96 mm x 96 mm x 90 mm.
Installation dimensions of the meter for fastening to the shield C = 92 + 0.8 according to the figure:
The method of attaching voltmeters to the shield and dismantling are shown in the figures:
The diagram for connecting the ЦИС0307-3/3-380-1(5) meter to a three-phase three-wire network without voltage transformers and the assignment of the terminals of the terminal blocks and the DB9M connector is shown in the figure:
The diagram of the connection of the ЦИС0307-3/3-100-1(5) meter to a three-phase three-wire network with voltage transformers and the assignment of the terminals of the terminal blocks and the DB9M connector is shown in the figure:
