MHSF-H digital dual clamp phase voltmeter

1、 Product Introduction:

1. MHSF-HDigital dual-phase voltammetry table clampIt is a high-precision, low-cost, portable handheld, dual channel input measuring instrument designed specifically for on-site measurement of voltage, current, and phase. This table allows for easy on-site measurementU-UTheI-IandU-IDistinguish the phase sequence between inductive and capacitive circuits and three-phase voltages, detect the wiring group of transformers, test the secondary circuit and bus differential protection system, and read out the differential protection groups of each groupCTCheck the phase relationship between them and ensure the correct wiring of the electricity meter. The measured current is input using a clamp current transformer conversion method, so there is no need to disconnect the measured line during measurement. measurementU1-U2When the phase is in between, the two input circuits are completely insulated and isolated, thus completely avoiding possible misconnections that may cause short circuits in the measured circuit and burn out the measuring instrument. The display adopts a high contrast LCD screen with high word count25mmThe screen angle can be freely converted70To achieve the best visual effect.

2. The instrument casing is made of engineering insulation material, and is equipped with rubber anti vibration protection sleeve and portable waterproof cloth bag, which is safe and reliable.

2、 Product features:

1Handheld structure, exquisite structure, easy to use; at10mA-10AWithin the current range,3V-500VWhen measuring phase within the voltage range, there is no need to disconnect the circuit or replace the limit;MHSF-HThe digital dual clamp phase volt ampere display adopts a high contrast LCD display screen with high word count25mmThe screen angle can be freely converted70° to achieve the best visual effect; The switch function and layout are reasonable, and rotating the switch can read the measured voltage, current, and phase.
2High resolution, this digital dual clamp phase voltmeter adopts the latest patented current clamp, with a current resolution of up to0.1mAVoltage resolution0.1V.
3Low power consumption, this digital dual clamp phase voltmeter is designed with micro power consumption and has battery voltage detection function.

3、 Product Technical Parameters:
1Reference working conditions
（1）Environmental temperature:（23±5）℃
（2）Environmental humidity:（45～75）% RH
（3）Tested signal waveform: sine wave β=0.02
（4）Tested signal frequency:（50±0.2）Hz
（5）Position of the tested current carrying wire in the clamp: arbitrary
（6）Range of measured signal amplitude during phase measurement:100～220VThe0.5A～1.5A
（7）External reference frequency electromagnetic field interference: should be avoided
2Basic error limit:
（1）AC voltage is shown in the table1

Input impedance: All limits are2MΩ
When measuring phase, input impedance at the voltage end>500KΩ
（2）AC current is shown in the table2

（3）Phase
U-UTheU-ITheI-Isee table3

3Rated working conditions
（1）Environmental temperature:（0～40）℃
（2）Environmental humidity:（20～80）% RH
（3）Tested signal waveform: sine wave β=0.05
（4）Tested signal frequency:（50±0.5）Hz
（5）Position of the tested current carrying wire in the clamp: arbitrary
（6）The amplitude range of the measured signal during phase measurement
measureU1-U2Phase wise:30V～500V
measureI1-I2Phase wise:10mA～10.00A
measureU1-I2orI1-U2Phase wise:10V～500VThe10mA～10.00A
（7）External reference frequency electromagnetic field interference: should be avoided
4Rated working error limit
Under the rated working conditions, the rated working error limit of each measured object shall not exceed the corresponding basic error limit.
5Voltage resistance
The voltage input terminal and the case, as well as the clamp current transformer iron core and clamp handle and auxiliary winding coil, can withstand1000V/50HzCan withstand between two voltage input terminals500V/50HzDuration of sine wave AC voltage1minThe experiment.
6Insulation resistance
Between the circuit of the digital dual clamp phase voltmeter and the casing, as well as between the two voltage input terminals: ≥10MΩ
7Display digits:3 1/2
8Sampling rate:3time/second
9Power supply: single9VStacked battery, power supply current less than5mA
10External dimensions:
Case size:186×86×33
Clamp shell size:140×40×19
Jaw size: Φ7×8
11Weight:
Table body:280g
Measuring pliers:2×200g
Measuring pliers:2×200g
12Storage conditions:
Temperature: -10℃～50℃