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D309

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Wattmeter D309, D309 three-phase three-wire varmeter (D 309, D-309)
For measurement of active and reactive power in three-phase three-wire circuits AC 50 Hz for uniform and non-load phases.

Rated currents from 5A to 15000A.
End of scale from 1kW to 800kW (quarks); from 4MW to 800 MW (MVAR) from 1.2 GW to 12GVt (GVar).
    Vibration, tryaskoprochnye.

D309 Wattmeter is designed for measurement of active and reactive power in three-phase three-wire circuits of AC 50 Hz for uniform and non-load phases. Transition from one power to another by a special switch without breaking circuits. (Switch type UP115/ZH-277.) Are used for picking, shield power and control panels.
Instruments are used for operation at an ambient temperature of -40 to +50 ° C and relative humidity up to 95% (at 35 ° C).
Use the equipment at an ambient temperature of - 50 to +60 ° C and relative humidity up to 95% (at 60 ° C).
In terms of resistance to mechanical impact devices are vibration and tryaskoprochnym.
Wattmeters D309, D309 varmeter (with leading zero) are included directly or via voltage transformers. With the direct inclusion of voltage 127, 220 and 380. When a measuring transformers with secondary windings 100 and 127 V nominal voltage of 380 to 5 ∙ 10 5 (GOST 1983-67).
Rated currents from 5 to 15 000 a.
Scale value from 1 to 800 kW (quarter), from 4 to 800 MW (MVAR), from 1.2 to 12 gigawatts (Gvar).
Wattmeter D309, D309 varmeter (with a zero in the middle) are included directly or via voltage transformers. With the direct inclusion of voltage 127, 220 and 380. When a current transformer with a secondary winding on the 100 and 127 in voltage ratings of 380 to 5 ∙ 10 5 (GOST 1983-67)
Rated currents from 5 to 15 000 a.
Scale value from 1-0-1 to 800-0-800 kW (quarter), from 4-0-4 to 800-0-800 MW (MVAr) from 1,2-0-1,2 to 12 - 0-12 GW (Gvar.) Basic accuracy equipment at all of the scale in normal operation does not exceed ± 2,5% full scale.
Changing readings caused deviation of ambient temperature of 20 ± 5 ° C (class H) does not exceed ± 1,2% for every 10 degrees, under the influence of external magnetic field strength of 400 A / m - not more than ± 5 0%.
Changing the readings does not exceed ± 2,5% under the influence of uneven loading phase and due to changes in the order of the phases than indicated on the instrument.
Overall dimensions are shown in the figure, the mass of the device 1.2 kg.
Settling time moving part ≤ 4 sec
Operating position of the device    vertical
The nature of the scale .......... uniform
Length scale devices ...... 120 mm

By design the housing is made ​​of dust and splash-proof.
On design features and wattmeters varmeter switch devices are one-way and two-way symmetrical scale with a measuring range that covers the entire length of the scale, mechanically opposing points with the moving part on extensions. The device is applied to a fluid damper POLYMETHYLSILICONE liquid.
The devices comply with TU 25-04-165-67.
The minimum probability of failure-free operation for 500 hours of testing of at least 0.8 for a confidence level of 0.8.

Photos D309

D309 front view (scale).
D309 front view (scale).
D309 side view (casing depth).
D309 side view (casing depth).
D309 rear view (connection).
D309 rear view (connection).


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