Wattmeter SR3020, varmetr SR3020 (CP 3020, CP-3020, cp3020, cp 3020, cp-3020)
Wattmeter SR3020, SR3020 varmetr designed to measure the active power and reactive power measurement in three-phase four or three-wire AC circuits in power stations and substations and transmission of their values on the interface RS485.
Wattmeters and SR3020 SR3020 varmetry performed on three-element circuit connected directly to the ITN and ITT and measure active or reactive power.
Have the ability to install the interface:
a) the transformation ratio ITN (K H);
b) the transformation ratio of ITT (C T).
Wattmeter SR3020 additionally has the ability to install the upper set point of acceptable values of the measured active power.
Indicates the value of the measured active power against established to H and K T, the dimension of the measured values of active power "kW" or "MW" and "+" sign for the received or "-" - for giving emoy power.Repaid indicators "kW" and "MW" means that the power value is displayed in Watts.
Varmetr SR3020 indicate the value of the measured reactive power against established to H and K T, the dimension of the measured value of reactive power, "var", "quarter" or "Mvar" and "+" sign for an inductive load, or "-" - for capacitive load .
The number of significant digits - four decimal places. Digit height - 25mm.
Wattmeters indicate the SR3020 the LED «max» out of the measured active power set point established abroad, with the output relay contacts are closed.
Wattmeter SR3020 SR3020 varmetr and intended for use in stationary conditions, macro-regions with a temperate climate with temperatures ranging from 5 º C to 40 C and 90% relative humidity at 25 ° C;
Specifications and equipment wattmeters SR3020 SR3020 varmetry:
The nominal value of the phase voltages in four-wire circuit devices include - U BM = 57.7, the nominal line voltage for three-wire connection circuit - U LN = 100V;
The nominal value of the phase currents of devices wattmeter SR3020, SR3020 varmetr - I BM = 1A or 5A BM = I (depending on version);
The nominal value of the measured active and reactive power for devices wattmeter SR3020, SR3020 varmetr:
- With I BM = 1A - and 173Vt 173var;
- With I BM = 5A - 865Vt and 865var;
The range of variation of phase and line voltages - from 0,8 U 1,2 Uof H to H;
The range of variation of the phase currents - from N to 0,01 I 1,2 I H;
The normal frequency of the voltage and 50Hz;
Changes in the frequency range - from 48Gts to 52Gts;
Nominal active power factor cos j = 1;
Rated Power Factor sin j = 1;
The range of variation coefficients of the power devices wattmeter SR3020, SR3020 varmetr:
- Cos j = 0,5 (emk.) - 1 - 0,5 (ind);
- Sin j = 0,5 (emk.) - 1 - 0,5 (ind);
The setting range is K N for devices wattmeter SR3020, SR3020 varmetr must be between 1 and 20000;
Setting range of C T - must be from 1 to 6000;
Setting range setpoint allowable maximum active power wattmeter SR3020 - from 10W to 9900MVt;
Limits of the basic reduced error of measurement instrument wattmeter SR3020 ± 0,5% to the nominal value of the measured active power
Limits of the basic reduced error of measurement instrument varmetr SR3020 ± 1,0% to the nominal value of the measured reactive power;
Burst Tolerance wattmeter SR3020 defined the basic reduced error of measurement;
Devices wattmeter SR3020, SR3020 varmetr heat and cold-resistant to temperatures ranging from 5 º C to 40 ° C;
The limit of additional measurement error wattmeter SR3020, due to changes in ambient temperature from normal to any temperature in the temperature range ± 0,25% for every 10 C temperature change;
Limits of additional measurement error varmetrov SR3020, due to changes in ambient temperature from normal to any temperature in the temperature range ± 0,5% for every 10 C temperature change;
Devices wattmeter SR3020, SR3020 varmetr water resistant to climatic conditions of the workers.
Devices comply with the requirements under the influence of an external magnetic field with induction 0.5 mT, 50 Hz ± 1 Hz at the most unfavorable direction of the magnetic field;
Devices wattmeter SR3020, SR3020 varmetr comply with changes in the frequency range of up to 48Gts 52Gts;
Devices meet the requirements when the input voltage range from 0,8 U 1,2 U of H to H;
Wattmeter SR3020 complies with changing the power factor in the range of 0.5 (emk.) - 1 - 0,5 (ind);
Varmetr SR3020 complies with:
- At the four-connection circuit when the power factor in the range of 0.5 (emk.) - 1 - 0,5 (ind);
- With a three-wire connection circuit when the power factor in the range of 0.65 (emk.) - 1 - 0.65 (ind);
Additional error varmetrov SR3020 with a three-wire circuit included in the ranges of the power factor 0.5 (capacitive) - 0.65 (capacitive) and 0.5 (lag) -0.65 (ind) does not exceed ± 33 (0,65 - | sin j |)%;
Power supply wattmeter SR3020, SR3020 varmetr carried out:
a) AC voltage 120V-250V, 50 Hz ± 5 Hz;
b) constant voltage 120V-250V;
Power consumption - less than 5V ∙ A;
Devices wattmeter SR3020, SR3020 varmetr complies with changing supply voltage:
a) AC frequency 45Hz-55Hz 120V to 250V from;
b) DC voltage from 120V to 250V;
Devices comply with an asymmetric load, when off a chain of supply;
Wattmeters and varmetry SR3020 comply within 2 minutes after exposure to short-time overloads, shown in Table 1;
Wattmeter current chain of devices SR3020, SR3020 varmetr not open when it passes through them during the current equal to 2c 30I H;
Wattmeters and SR3020 SR3020 varmetry in normal conditions of use complies with the requirements after the time of an operating mode.
Operation mode setup time devices wattmeter SR3020, SR3020 varmetr (preheating) is 5 minutes;
Mode devices - continuous.Prodo lzhitelnost continuous operation - unlimited;
Average life - at least 12 years;
Mean time between devices wattmeter SR3020, SR3020 varmetr to failure - at least 36,000 hours under normal conditions of use;
Overall dimensions - not more 144h72h220mm;
Weight devices wattmeter SR3020, SR3020 varmetr - no more than 0.7 kg.