Product Description
RS20000B 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
Product 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
Intrinsic Error
| Reference Working Conditions | Temperature | (23±5)℃ |
| 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)℃ |
| 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 | -10℃~50℃ |
