Wattmeter narrow profile D390, D390 varmeter narrow profile (D-390, D 390)
Wattmeter narrow profile D390, D390 varmeter narrow profile is designed to measure the power and alarm at a deviation of the measured value for the specified limits, and automatic control of the parameters of controlled objects. Wattmeter D390 and D390 varmeter used in three-phase ac mains frequency of 50 Hz with uniform and non-load phase, and symmetry line voltages.
Dimensions - 160h30h270mm.
- On the accuracy of - 1.5;
- For precision operation - 2.5.
In wattmeter D390, D390 varmeter used in ambient temperatures from -30 º C to +50 ° C and relative humidity of 80% and a relative humidity of 95% (at 30 ° C). In terms of resistance to mechanical stress, the device belongs to the ordinary.
Full scale unit D390 from 1kW to 30 ∙ 10 6 kW. Rated active power factor cosφ = 1, the nominal rate of reactive power sinφ = 1. Food contact equipment should be made by a DC voltage of 12V. Settling time of the mobile device and no more than 4 s.
The device is designed for installation in a horizontal position on the vertical panels and boards or panels and boards at an angle of 15 º, 30 º, 45 º, 60 º or 75 °. The angle of inclination is stipulated in the order. By the nature of the instrument scale wattmeter narrow profile D390, D390 varmeter narrow profile refers to devices with one-way and two-way symmetrical scale with a measuring range that covers the entire length of the scale.
Changing readings caused deviation of ambient temperature from normal (ranging from -30 º C to +50 ° C) for every 10 º less than ± 1,2%. Change readings when triggered contact device caused deviation of ambient temperature from normal (ranging from -30 º C to +50 ° C) for every 10 º less than ± 2,5%; under the influence of external magnetic field strength of 400 A / m - not exceed ± 2,5%; when the instrument is on a ferromagnetic shield thickness of 4 mm - less than ± 1% when the phase sequence than those in the device - does not exceed the absolute value of the admitted basic error. The device can be installed both on ferromagnetic and non-ferromagnetic shields for groups and individually with fixing brackets.
Measuring mechanism - ferrodinamicheskoy system
Unit weight wattmeter D390, D390 varmeter - 1.2 kg, the size of the auxiliary type DU-DU-R390 and R391 - 160h80h83mm. weight of 1.0 kg, the size bracket 183h30h250mm, weight 0.3 kg.
Instrument parts and accessories comply with GOST. Wattmeter and varmeter provided with contact device comply with GOST. Wattmeter and varmeter designed to work in combination with the (sensors) GSP, the requirements of GOST.