Voltamperephasemeter VAF-85M (VAF 85M, VAF-85M, VAF-85 M, VAF85-M, VAF-85-M, VAF 85 M)
For the measurement of rms power and AC voltage sine wave, the phase angle relative to the three-phase voltage system 110V nominal values; 220; 380 during commissioning and testing of relay protection circuits and electrical power circuits.
Voltage: 0.2 V-1B, 1B-5V, 5V-25V, 25V, 125V, 50V, 250V, 100V-500V.
Current (with a break chains): 2mA, 10mA, 10mA, 50mA, 50mA, 200mA.
Amperage (without chain scission) 0.2 A-1A-5A 1A, 2A-10A.
The phase angle, φ °: 180-0-180.
Permissible basic error,%: ± 4; ± 1,5.
VAF-85M designed to measure the rms power and AC voltage sine wave, the phase angle relative to the three-phase voltage system nominal values 110B, 220, 380 for set-up and verification of relay protection circuits and electrical power circuits.
Rated climatic conditions of application of the device:
ambient temperature from -10 ° C to +40 ° C;
the upper value of relative humidity 90% at 30 ° C;
atmospheric pressure of 630-800 mm. Hg. Art. (84-106.7 kPa).
The value of the measurement ranges of accuracy and limits of permissible values of the basic error of the instrument under normal conditions of use (Table 2) shall be as shown in Table. 1. The basic values, complementary error and variations readings (γ) are expressed as a percentage in the form of reduced errors by the formula:
γ = Δ · 100/Xn (1)
where Δ - an absolute error, which is expressed in units of the measured value;
Xn - normalizing value, expressed in the same units as the absolute error. Normalizing values when setting errors are assumed to be: the final value of the measuring range of power and voltage of the arithmetic sum of the final values of the measurement range (not including their sign) phase angle.
Warm-up time unit - immediately after switching on. Response time the device is less than 4 seconds. The duration of continuous operation 16 hours with a break to re-enable 1 hour
The insulation between the casing and insulated from the housing of DC electric circuits of the VAF-85M and tick boxes in standard conditions (Table 2) stands for 1 min. test voltage of the AC sine wave frequency (50 ± 1) Hz 2 kV rms.
Overall dimensions 260h160h180 mm. Unit weight of 3.5 kg. The limits of permissible values of additional errors in the unit interval, then the working conditions affecting the application of appropriate tab. 3. Limit of acceptable error of the instrument in the working conditions of application of γ p is defined as the sum of the limits of acceptable basic instrument error γ 0 and additional errors from the effects: the frequency of the measured force and voltage γ f, γ to the shape of the curve, the temperature of γ t, the external magnetic field γ m, n γ position of the instrument, ie
γ 0 = γ p + γ f + γ to + γ t + γ m + γ (n) (2)The total weight of precious materials in the device: Gold - 0,002 g of silver -3.1, the total mass of non-ferrous metals contained in the design of the device:
aluminum and aluminum alloys - 50 grams (nameplate dial);
Copper and copper alloys - 60 g (in sleeves, rods, fasteners);
nickel and nickel alloys - 290 g (transformers).