Product overview
SMG20000B Double Clamp Digital Phase Meter is special designed for testing voltage, current and phase onsite, it is in high-precision, low price, portable hand-held, dual-channel input measuring products. It's easy to measure the phase between U-U, I-I and U-I, identify the inductive circuit ,capacitive circuit and the phase sequence of three-phase voltage, detect the wiring group of transformer, test the secondary circuit and bus differential protection system, read the phase relationship among the CT groups of a differential protection system, and check if the watthour meter was correctly wired. When testing customers do not need cut off the measured circuit which input by split core current transformer. When measuring the phase between U1 and U2, the two input circuit loop are completely insulated isolation, so the possibility of misconnection is absolutely avoided, which may result in short circuit or even burn the meter. The device with high-contrast LCD screen, and the character in big size, which helps to obtain the best visual effects.
Products features
1. Withstand Voltage
Parts between voltage input terminal and meter shell, parts between the iron core of the clamp-current transformer and secondary windings can stand 1000V/50Hz. Parts between the two voltage input terminals can stand Sinusoidal AC Voltage 500V/50Hz for 1min when testing.
2. Insulation Resistance
Between meter circuit and meter shell, between the two voltage input terminals:≥10MΩ
Technique parameters
Intrinsic Error
| Reference Working Conditions |
Temperature |
(23±5)ºC |
| Hunidity |
(45~75)%RH |
| Wave forms of measured signal |
sine wave,β=0.02 |
| Frequency of measured signal |
(50±0.2)Hz |
| Position of Measured current carrying conductor in the nipper jaw |
Optional position |
| Amplitude range of measured signal when measuring phase |
100~220V,0.5~1.5A |
| External reference frequency electromagnetic interference |
Should be avoided |
Limits of Intrinsic Error
1 AC Voltage
| Table 1:Measurement Error of AC Voltage |
| Measure range |
Resolution |
Limits of intrinsic error |
| 20V |
0.01V |
±(1.0%RD+2) |
| 200V |
0.1V |
| 500V |
1V |
Input Impedance:2MΩ for all the measure range
2 Alternating current
| Table 2:Measurement Error of alternating current |
| Measure range |
Resolution |
Limits of intrinsic error |
| 200mA |
0.1mA |
±(1.0%RD+2) |
| 2A |
1mA |
| 10A |
10mA |
3 Phase
U-U,U-I,I-I (see Table 3)
| Table 3: Measurement Error of Power-frequency Phase |
| Range |
Resolution |
Limits of intrinsic error |
| 0~360° |
1° |
±3° |
Impedance of input voltage loop when measuring phase of U1-U2:40KΩ
Operating error
| Rated Working Conditions |
Temperature |
(0~40)ºC |
| Humidity |
(20~80)% RH |
| Wave forms of measured signal |
Sine wave,β=0.05 |
| Frequency of measured signal |
(50±0.5)Hz |
| Position of Measured current carrying conductor in the nipper jaw |
Optional position. |
| Amplitude range of measured signal when measuring phase |
Phase U1-U2:30V~500V |
| Phase I1-I2:10mA~10.00A |
| Phase U1-I2 or I1-U2:10V~500V,10mA~10.00A |
| External reference frequency electromagnetic interference |
should be avoided |
| Limits of Rated Working Error |
Under the conditions described in 1, the limits of the rated operating error will not exceed twice of the limits of intrinsic error. |
|
Other technical features
| Display |
three and half |
|
| Sampling rate |
3 times per second |
|
| Power supply |
Single 9V laminated cell,current of power is less than 5mA |
|
| Dimensions |
Meter shell |
192×95×55mm3 |
| Clamp shell |
140×42×20mm3 |
| Nipper jaw |
Φ7mm×9mm |
| Weight |
Meter body |
280g |
| Measuring clamps |
2×200g |
| Storage Conditions |
Temperature |
-10ºC~50ºC |
FAQ
1. Is your company a sales company or a manufacturer?
Wuhan UHV Power Technology Co.,Ltd. is an industrial and trade enterprise, with its own factory, self-produced and self-sold. We were founded in 2004 and have fifteen years of production experience. Our company has reliable production lines, test rooms and R&D centers.
2. Whether the goods are in stock, whether they can be customized, and how long the delivery time is.
After the goods have been ordered, it takes about 7 working days for production if there are no accidents.
3. Is the quality guaranteed?
In order to ensure quality, we use imported components in large quantities. After three times of quality inspection, the goods can be sent out, and the export is uniformly packed in non-fumigation wooden boxes.
4. What are the after-sales terms?
We offer free consulting service, one year warranty, and adopt various methods such as email communication, video calls, technology door-to-door, aiming to solve any after-sales problems in a timely manner.
5. What are the cooperative countries or regions?
Products have been successfully exported to the United States, Brazil, Australia, Russia, the Netherlands, Indonesia, Bangladesh, Iran, India, Saudi Arabia, Mongolia, Japan and other countries and regions. In the United States, India, Vietnam and other regions have cooperative distributors, can provide thoughtful services.
Contact us
Wuhan UHV Power Technology Co.,Ltd.
Address:Building 6, Optics Valley Optical-Mechanical Industrial Park, No.83, Gaoxin 5th Road,
East Lake High-tech Zone, Wuhan city .China 430223
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