selective voltmeter NNB-12

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The voltmeter selective & nbsp; NNB-12 combined with selective microvoltmeter and meter interference type SMV 11 & nbsp; for law-measuring asymmetrical stresses emissions back electrical equipment in the form of high-frequency noise in the frequency range from 0.15 MHz to 30 MHz in the connected network <. / p>

Voltmeter selective & nbsp; NNB-12 & nbsp; performed in a four-V-shaped network equivalent and serves for connection to an AC network with a frequency of 50 Hz, as well as to a direct current network to the nominal value to 220V with respect to ground 25A and working currents. Impedance sostovljaet 150 ohm

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Basic specifications NNB-12 instrument:.

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& nbsp; & nbsp; & nbsp; Frequency range - 0,15MGts-30MHz;

& nbsp; & nbsp; & nbsp; The impedance across the terminals & laquo; interference source & raquo;:

& nbsp; & nbsp; & nbsp; - Rated impedance value - z & nbsp; = 150 ohms;

& nbsp; & nbsp; & nbsp; - The actual value of the impedance - | z | = 150 ohms & plusmn; 20 ohm;

& nbsp; & nbsp; & nbsp; - The phase angle of the impedance - -20 & deg; & le; & phi; & le; + 20 & deg ;;

& nbsp; & nbsp; & nbsp; - Type of connection - & nbsp; a modified 50-socket high-tiomovaya 7/16;

& nbsp; & nbsp; & nbsp; - Connecting the object of verification to the equivalent network NNB12 & nbsp; - & nbsp; via an adapter plug type & nbsp; AD 13, a cable lug for cable cross section & le; 4mm2;

& nbsp; & nbsp; & nbsp; Measurement Voltage - Voltage asymmetrical RFI;

& nbsp; & nbsp; & nbsp; Attenuation voltage measurements (calibration factor) - & nbsp; K = 20 dB;

& nbsp; & nbsp; & nbsp; Characteristics of measured voltages in the measurement set, consisting of the selective type microvoltmeter SMV 11 and the network equivalent NNB12 type:

& nbsp; & nbsp; & nbsp; - The value of the measured voltage - & nbsp; dB microvolts obtained as the sum of the measured voltage values ​​in dB for the measuring consistent output network equivalent and the calibration coefficient, in dB;

& nbsp; & nbsp; & nbsp; - measuring range for sinusoidal voltages with the calibration factor (C = 9kHz view indicating QP 11);

& nbsp; & nbsp; & nbsp; - The lowest measured voltage - 20 dB microvolts = 10mkV;

& nbsp; & nbsp; & nbsp; - The greatest measured voltage uV = 130dB 3B;

& nbsp; & nbsp; & nbsp; - The largest allowable high frequency voltage at the & quot; source of interference & quot; - 138dB uV = 8B;

& nbsp; & nbsp; & nbsp; - Basic measurement uncertainty sinusoidal voltages in the limit of measurement of the indicator instrument + 5dB to + 10dB at reference temperature & delta; In & nbsp; = 23 & deg; C & plusmn; 2K - & le; 2,5dB;

& nbsp; & nbsp; & nbsp; - Additional error when measuring -10 & deg sinusoidal voltages in the temperature range C to + 45 & deg; C relative to & delta; In & nbsp; - & le; 0,25dB / 10K;

& nbsp; & nbsp; & nbsp; - Additional error for the pulse voltages in the measurement limit indicator instrument +5 dB to + 10 dB in the temperature range of + 5 & deg; C to 45 & deg; C - & le; 1.5 dB;

& nbsp; & nbsp; & nbsp; - Additional error for the pulse voltages in the limit of measurement of the indicator instrument +5 dB to + 10 dB in the temperature range of -10 & deg; C to 5 & deg; C relative to & delta; U & nbsp; = + 5 & deg; C - & le; 0,4dB / 10K < / p>

& nbsp; & nbsp; & nbsp; - Additional error due to voltage noise - & le; 1dB;

& nbsp; & nbsp; & nbsp; Output parameters NNB12 & nbsp; on leads & quot; interference measurer & quot; (Measuring yield):

& nbsp; & nbsp; & nbsp; - Nominal impedance 50 ohms;

& nbsp; & nbsp; & nbsp; - Reflectance - | r | & lt; 0,1;

& nbsp; & nbsp; & nbsp; - Type of connection - high-frequency socket 3/7 50 ohms;

& nbsp; & nbsp; & nbsp; The attenuation of the lowpass filter (lowpass weakening) - & ge; 30dB;

& nbsp; & nbsp; & nbsp; Crosstalk NNB12 & nbsp; - & ge; 25dB;

& nbsp; & nbsp; & nbsp; Coaxial load resistance - KAW type 5:

& nbsp; & nbsp; & nbsp; - Nominal impedance - 50 Ohm;

& nbsp; & nbsp; & nbsp; - Reflectance - | r | & lt; 0,1;

& nbsp; & nbsp; & nbsp; - Type of connection - high-frequency socket 3/7 50 ohms;

& nbsp; & nbsp; & nbsp; NNB12 connection conditions to the network:

& nbsp; & nbsp; & nbsp; - Mains voltage - 3h380V / 220;

& nbsp; & nbsp; & nbsp; - The voltage between the outer conductor and the earth - & le; 220 + 10%;

& nbsp; & nbsp; & nbsp; - The voltage between the external conductors - & le; 380 + 10%;

& nbsp; & nbsp; & nbsp; - network frequency - 0Hz-50Hz + 30Hz;

& nbsp; & nbsp; & nbsp; - Number of identical conductors - 4;

& nbsp; & nbsp; & nbsp; - Number of phases - 3P + N + PE;

& nbsp; & nbsp; & nbsp; - voltage drop at rated current and the power factor cos & phi; 1 = calibration object - & le; 5B;

& nbsp; & nbsp; & nbsp; - Rated current, the maximum operating current in each conductor - & le; 25A;

& nbsp; & nbsp; & nbsp; - Cables for connection to the network - cable in a rubber tube, 3m, 5-tiprovodny, 4mm2-section;

& nbsp; & nbsp; & nbsp; - Network cable - type LE 119; the device side and the network lived Stripping and they ludirovany (without connector);

& nbsp; & nbsp; & nbsp; - Network cable - type LE 118; on the part of the device with live Stripping and they ludirovany, on the supply side - shielded connector IFS 32;

& nbsp; & nbsp; & nbsp; - Terms of the fan connected to the network:

& nbsp; & nbsp; & nbsp; - mains voltage - (220 + 10% 220 15%) / 50Hz & plusmn; 3 Hz;

& nbsp; & nbsp; & nbsp; - power consumption - 17V ∙ A;

& nbsp; & nbsp; & nbsp; - Type of connection - device plug 22 with earthing contact;

& nbsp; & nbsp; & nbsp; - Power Cord - RI / 33-2 black;

& nbsp; & nbsp; & nbsp; - Fan type - I459.1 fan module with the engine having a gap at the poles;

& nbsp; & nbsp; & nbsp; Switching the measuring circuits NNB12:

& nbsp; & nbsp; & nbsp; - Management manually - using the phase selector to & nbsp; NNB;

& nbsp; & nbsp; & nbsp; - Telecontrol - via control cable & nbsp; LE 115 from the control device;

& nbsp; & nbsp; & nbsp; - Log In telecontrol - semipolyusny round plug C;

& nbsp; & nbsp; & nbsp; - Control cable - such as LE 115 with plug and socket 7 A 7 B;

& nbsp; & nbsp; & nbsp; - The control signals - & nbsp; parallel bits, four control bits (1 bit for each measuring chain), positive logic;

& nbsp; & nbsp; & nbsp; - Control Level - 0V & le; UL & le; + 3B; + 12B & le; UH & le; 15B;

& nbsp; & nbsp; & nbsp; - The control integrated circuit - DMDP;

& nbsp; & nbsp; & nbsp; - Display enabled measurement circuit - display yellow light-emitting diodes;

& nbsp; & nbsp; & nbsp; - NNB12 Power - via control cable & nbsp; LE & nbsp; 115 from the control device:

& nbsp; & nbsp; & nbsp; - Operating voltage - + 15V-0.5V;

& nbsp; & nbsp; & nbsp; - current consumption - & le; 80mA;

& nbsp; & nbsp; & nbsp; Environmental conditions:

& nbsp; & nbsp; & nbsp; - Protection by CT CMEA 778 - protection against water droplets and solid particles & ge; 2.5mm;

& nbsp; & nbsp; & nbsp; - Ambient temperature range - from -10 & ordm; C to 45 & ordm; C;

& nbsp; & nbsp; & nbsp; - Temperature / humidity - 30 + & ordm; C / 95%;

& nbsp; & nbsp; & nbsp; Dimensions NNB12 - 485h208h496mm;

& nbsp; & nbsp; & nbsp; Weight - 22,5kg .