Radiometric devices >> selective voltmeters, voltage disturbance recorders and instrumentation antennas

NNB 12

16 999 RUB
6 800 UAH
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The equivalent network NNB 12 (NNB12, NNB-12)
The equivalent network NNB12 in combination with selective Microvoltmeter type SMV 11 is designed for law-measure single-ended voltage noise, electrical equipment loaned in the form of high-frequency noise in the frequency range from 0.15 MHz to 30 MHz in the connected network.
NNB12 instrument executed in the form of a V-shaped four-equivalent network and to connect to networks with AC 50Hz and DC networks with nominal value of up to 220V with respect to ground and operating currents up to 25A. The impedance is 150 ohms.
Technical characteristics of network devices equivalents NNB12:
The range of frequencies - 0.15 MHz 30 MHz;
The impedance at the terminals "a source of radio interference":
- Nominal impedance - z = 150 ohms;
- The actual value of the impedance - | z | = 150 ohms ± 20 ohms;
- Phase angle of impedance - 20 ° ≤ φ ≤ +20 °;
- Connection type - modified 50-tiomovaya high-socket 7/16;
- Connection object to the equivalent of checking the network NNB12 - with an adapter plug type AD 13, the cable lug for cable cross sections ≤ 4 mm 2;
Type of voltage measurement - asymmetrical interference voltage;
Easing tensions measurement (calibration factor) - K = 20 dB;
Characteristics of the measured voltages in the measurement set consisting of a selective type microvoltmeter SMV 11 and equivalent network type NNB12:
- The measured voltage - obtained in dB microvolts measured as the sum of the voltage values ​​in dB at measuring consistent output equivalent network and a calibration factor in dB;
- Measuring range for sinusoidal voltage with the calibration factor (B = 9 kHz, the view display QP 11);
- The smallest of the measured voltage - 20 dB uV = 10mkV;
- The highest measured voltage 130 dB uV = 3V;
- The maximum allowable voltage at the high-frequency "radio interference" - 138dB uV = 8B;
- The basic error of measurement of sinusoidal voltage at the limit of measurement indicator tool +5 dB to +10 dB at a reference temperature in the δ = 23 ° C ± 2 K - ≤ 2,5 dB;
- Additional error in the measurement of sinusoidal voltage over the temperature range -10 ° C to +45 ° C with respect to δ in - ≤ 0,25 dB/10K;
- Additional error for impulse voltage measurements in the limit of the tracer tool +5 dB to +10 dB in the temperature range of +5 ° C to +45 ° C - ≤ 1,5 dB;
- Additional error for impulse voltage measurements in the limit of the tracer tool +5 dB to +10 dB in the temperature range -10 ° C to +5 ° C relative to the δ U = +5 ° C - ≤ 0,4 dB/10K;
- Additional error due to voltage noise - ≤ 1dB;
Output parameters NNB12 on the findings of "meter radio" (measuring output):
- Nominal impedance 50 ohms;
- Reflectivity - | r | <0,1;
- Connection type - high-socket 3/7 50 ohms;
Attenuation lowpass filter (lowpass weakening) - ≥ 30dB;
Coupling loss NNB12 - ≥ 25dB;
Coaxial load resistance - such KAW 5:
- Nominal impedance - 50 ohms;
- Reflectivity - | r | <0,1;
- Connection type - high-socket 3/7 50 ohms;
Terms NNB12 connection to the network:
- Increased - 3h380V/220V;
- The voltage between the outer conductor and the ground - ≤ 220 +10%;
- The voltage between the outer conductors - ≤ 380 +10%;
- Frequency - 0 Hz-50 Hz 30 Hz;
- Number of identical conductors - 4;
- Number of phases - 3P + N + PE;
- The fall of voltage at rated current and power factor cosφ = 1 object of verification - ≤ 5 V;
- Rated current, maximum operating current in each conductor - ≤ 25A;
- Cables for connection to the network - cable rubber tube, length 3m, 5-tiprovodny, conductor cross-section 4 mm 2;
- Network cable - type LE 119; from the device and the network lived Stripping and they ludirovany (without connector);
- Network cable - type LE 118, the device side with live Stripping and they ludirovany, on the supply side - Shielded connector IFS 32;
- Terms fan connection to the network:
- Increased - (220 +10% 220-15%) / 50 Hz ± 3 Hz;
- Power consumption - 17V ∙ A;
- Type of connection - device plug with earthing contact 22;
- Network cable - RI/33-2 black;
- Type of fan - the fan module I 459.1 with an engine having a gap at the poles;
Switching the measuring circuits NNB12:
- Manual control - with switch selection phase on NNB;
- Remote control - via a control cable LE 115 of the control device;
- Input remote control - semipolyusny round plug C;
- Control cable - type LE 115 with plug and socket A 7 B 7;
- Control signals - parallel bits, 4 control bits (1 bit for each measuring circuit), positive logic;
- Executive Level - 0 V ≤ U L ≤ +3 V, 12 V ≤ U ≤ 15 V H;
- Management Integrated Circuit - DMDP;
- Indication of the measurement circuit is enabled - display yellow light-emitting diodes;
- Power NNB 12 - via the control cable LE 115 of the control unit:
- Operating voltage - 15 V-0, 5V;
- Current consumption - ≤ 80mA;
Environmental conditions:
- Degree of protection according to ST SEV 778 - protection against water droplets and solid particles ≥ 2,5 mm;
- Ambient temperature range - from -10 º C to +45 º C;
- Temperature / Humidity - +30 º C/95%;
Dimensions NNB12 - 485h208h496mm;
Weight - 22.5 kg.

Photos NNB 12

NNB 12 device image.
NNB 12 device image.
NNB 12 front view.
NNB 12 front view.
NNB 12 side view.
NNB 12 side view.
NNB 12 rear view.
NNB 12 rear view.
NNB 12 overhead view.
NNB 12 overhead view.
NNB 12 bottom view.
NNB 12 bottom view.


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