Microvoltmeter V3-57 (V357, V3 57, b3-57, b3 57, b357)
Designed to measure the rms AC voltage of an arbitrary shape and for converting an AC voltage of an arbitrary shape into a proportional DC voltage.
The range of the voltage measuring 10mkV - 300V with sub-bands: 0.03 mV-0-0 1 mV, 1 mV-3mV-3mV-10mV, 30mV, 100mV, 300mV 1V-3V-10V-30V-100V-300V
Frequency range 5 Hz - 5 MHz
Deviation,%: ± 1 (30-300 mV), ± 1,5 (1-10 mV), ± 2,5 (0,1-0,3 1-300 mV In), ± 4 (0.03 mV)
Microvoltmeter V3-57 is designed to measure the rms value of the AC voltage of an arbitrary shape and for converting an AC voltage of an arbitrary shape into a proportional DC voltage.
Instrument scale Microvoltmeter V3-57 to calibrate the RMS values of a sinusoidal voltage and decibels.
Level 0 is set to 0 dB, 775 V.
The operating conditions of use of the instrument:
ambient temperature from 278 to 313 K (5 to 40 ° C);
relative humidity up to 95% at a temperature of 303 K (30 ° C);
atmospheric pressure or 61,3 to 104 kPa (460 to 780 mm Hg. centuries).
mains voltage of 220 ± 22 V, 50 Hz ± 0,5 and harmonic content up to 5% and 220 ± 11 at 400 28/12 Hz, and harmonic content up to 5%.
Normal values of the influencing factors are those specified in the table. 1, where the Uk - Napryazhenka equal to the end value of the scale established by sub-band, U - the actual value of the measured voltage.
Measurement range of the instrument voltages from 300V to 10mkV overlapping ranges with upper limits of 0.03 mV and 0.1 mV, 0.3 mV, 1 mV; 3mV, 10mV, 30mV, 100mV, 300mV, 1V, 3V, 10V, 30V, 100V, 300V ( in the future - sub-bands).
The range of measured voltage of the device in conjunction with balancing transformer from 0.3 mV to 1 mV 3B overlapped sub-bands, 3mV, 10mV, 30mV, 100mV, 300mV, 1V, 3V.
The device measures the voltage of an arbitrary shape with a frequency spectrum in the range from 5 Hz to 5 MHz using the device without a balun transformer 20 Hz to 10 kHz, using the device in conjunction with the balun transformer and the range of 5 Hz to 3 kHz, while the integrated filter lowpass (LPF). Allowed to use the device with a filter turned on in the frequency range 3 kHz to 20 kHz when using the calibration factor K. The frequency of 1 kHz sine wave. Operating frequency range shown in Table. 2.
Output accuracy instrument, including when the built-in low-pass filter, expressed as a percentage of the upper limit of the established sub-band:
± 1,0% for sub-bands-30mV 300mV;
± 1,5% for sub-bands 1 mV-10mV:
± 2.5% for sub-bands of 0.1 mV, 0.3 mV and 1B-300B;
4% ± 0.03 mV subband and the subband-1mV 3B using the device in conjunction with the balun transformer.
The variation of the readings, expressed as a percentage of the upper limit established by sub-band does not exceed 0.75%.
Warm-up time 30 min.
The device retains its specifications when powered from the mains AC voltage of 220 ± 22 V, 50 Hz ± 0,5, harmonic content to 5% and ± 11 napryazheniem220 frequency of 400 +28 / -12 Hz harmonic content up to 5%.
The power consumed by the device Microvoltmeter V3-57 from the network at the rated voltage does not exceed 17 VA.
Microvoltmeter V3-57 allow continuous operation under the operating conditions and for 8 hours while maintaining their performance.
dimensions, not more 171X209x332 mm dimensions packing box no more than 417x298x265 mm;
dimensions of shipping containers not exceeding 648h602h458 mm;
dimensions balun no more 62X82X72 mm;
overall dimensions packing box balun no more 113x93x111 mm.
With other supplies:
dimensions, not more 158x209x289 mm dimensions shipping container 546X562X416mm no more.
weight of the device Microvoltmeter V3-57 is not more than 6.5 kg;
Weight with packing box not more than 16 kg;
mass transport container unit with not more than 38 kg;
mass of balun is not more than 0.5 kg;
mass of balun to the housing compartment is not more than 0.8 kg.
Average lifetime 10 years. Average life 10,000 hours