An overview,
ZY3300 series double clamp digital phase voltammetry is my company carefully developed another designed for field testing of multifunctional meters, with high precision, high stability, low power consumption, easy to use and other characteristics. Can under the condition of the circuit under test does not open directly measuring ac voltage and ac current, measured between two between voltage, current and voltage between the current phase, in addition, still can indirectly measured circuit of the power factor and power, and can distinguish three-phase phase sequence, transformer connection group, sensibility, capacitive circuit, the secondary circuit test and differential bus protection system, Read out the phase relation between CT of each group of differential protection, check whether the wiring of electricity meter is correct or not, overhaul the line equipment, etc.
Two, technical indicators
Function | Phase, AC current, AC voltage, AC leakage current and phase sequence direct test; Transformer group, inductive and capacitive circuit discrimination; Indirect test of power factor and power |
Power supply | DC9V Alkaline Dry Cell (1.5 V LR 6 x 6) |
Power consumption | Turn on the backlight up to about 35mA, and the battery works continuously for about 40 hours |
Turn off the backlight, the meter consumes about 5mA and the battery works continuously for about 300 hours | |
Display mode | LCD display, blue screen backlight function, suitable for dim places |
LCD size | 70mm × 62mm;; Display field: 64mm × 54mm |
Instrument dimensions | Length and width: 192 mm × 92 mm × 50 mm |
Sampling rate | Approximately 3 times/sec |
Measuring range | * AC voltage: 0 ~ 20V/200V/500V |
* AC current: 0 ~ 200ma/2A/10A | |
Phase: 0 ~ 360 ° | |
Amplitude range of measured signal when measuring phase | When measuring U1-U2 phase: 30V ~ 500V |
Measuring I1-I2 phase: 10mA ~ 20.00 A | |
When measuring U1-I2 or I1-U2 phase: 10V ~ 500V, 10mA ~ 10.00 A | |
Data retention | In the test, press the HOLD key to keep the data, and the "DH" symbol is displayed |
Automatic shutdown | After starting up for about 15 minutes, the meter automatically shuts down to reduce battery consumption |
Voltage detection | When the battery voltage is lower than 7.8 V ~ 8V, the symbol " |
Instrument quality | The main engine is about 550g (with battery), the meter clamp is about 170g × 2, and the test line is about 250g |
Test line length | 1.5 m |
Current clamp wire length | 2m |
Working temperature and humidity | -10 ℃ ~ 40 ℃; Below 80% Rh |
Storage temperature and humidity | -10 ℃ ~ 60 ℃; Below 70% Rh |
Input impedance | The input impedance of each test voltage is 2 M Ω |
When measuring U1U2 phase, the voltage input impedance is 40K Ω | |
Withstand voltage | The sine wave AC voltage of 1000V/50Hz can be withstood between the instrument circuit and the shell for 1 minute; Experiment of withstanding sine wave AC voltage of 500V/50Hz between two voltage inputs for 1 minute |
Insulation | ≥ 10 M Ω between instrument circuit and housing and between two voltage inputs |
Structure | Double insulation |
" of low battery voltage is displayed to remind to replace the battery3. Basic error and performance index under reference condition
(Marked * indicates that ZY3200 does not have this function and parameter)
Category | Measuring range | Resolution | Basic error |
* Voltage | 20V | 0.01 V | ± (1.2% rdg+2dgt) |
200V | 0.1 V | ||
500V | 1V | ||
* Current | 200mA | 0.1 mA | ± (1.0% rdg+2dgt) |
2A | 1mA | ||
10A | 10mA | ||
Phase | 0 ~ 360 ° | 1 ° | ± 1 ° |
Note: The phase error is ±3° under working conditions.
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