- Contact Person : Ms. Si Lisa
- Company Name : Henan Defy Electronics Co., Ltd.
- Tel : 0086-371-55819257
- Fax : 0086-371-66770722
- Address : Henan,Zhengzhou,7/F, Building 68, Enterprise Headquarters Base, High-Tech Development Zone
- Country/Region : China
DF-200 Dual-clamp Digital Phase Meter
I. Introduction
DF-200 Double Clamp Digital Phase Meter is special designed for voltage, current and phase tests, it is in high-precision, low price, portable hand-held, dual-channel input measuring.
Easy to measure the phase between U-U, I-I and U-IIdentify the inductive circuit ,capacitive circuit and Idenify the phase sequence of three phase voltage Detect the wiring group of transformerTest the secondary circuit and bus differential protection systemDisplay the phase relationship among the CT groups of a differential protection systemCheck if the wire of electric meter was correctly connected The shell of the device is made of engineering insulating material with a rubber–made anti-vibration protection kits for safety and reliability.II. Features & Functions
1. Withstand Voltage
Parts between voltage input terminal and meter shellParts between the iron core of the clampcurrent 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 ResistanceBetween meter circuit and meter shell, between the two voltage input terminals:≥10MΩ.
III. Specifications
l Intrinsic Error
1. Reference Operating Conditions(1) Temperature(23±5)°C(2) Moisture(45~75)% RH(3) Wave forms of measured signal, sine wave β=0.02(4) Frequency of measured signal(50±0.2)Hz(5) Position of Measured current carrying conductor in the nipper jaw, Optional position(6) Amplitude range of measured signal when measuring phase, 100~220V, 0.5A~1.5A(7) External reference frequency electromagnetic interference, Should be avoided
2. Limits of Intrinsic Error (1) AC Voltage(see Table 1)
Table 1 Error of AC Voltage | ||
Measure range | Resolution | Limits of intrinsic error |
20V | 0.01V | ±(1.2%RD+2) |
200V | 0.1V | ±(1.0%RD+2) |
500V | 1V | ±(1.2%RD+2) |
Input Impedance:All the measure range is 2MΩ (2) Alternating current(see Table 2)
Table 2 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 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
l Operating Error
1. Rated Operating Conditions(1) Temperature (0~40)°C(2) Moisture (20~80)% RH(3) Wave forms of measured signal, sine wave β=0.05(4) Frequency of measured signal,(50±0.5)Hz(5) Position of Measured current carrying conductor in the nipper jaw, Optional position.(6) 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(7) External reference frequency electromagnetic interference, should be avoided
2. Limits of Rated Operating ErrorUnder the conditions described in 1, the limits of the rated operating error will not exceed twice of the limits of intrinsic error.
l Other Technical Features1. Display, three and half2. Sampling Rate, 3 times per second3. Power Supply, Single 9V laminated cell, current of power is less than 5mA4. DimensionMeter shell, 192x95x55mmNipper shell, 140×42×20mmNipper jaw, Φ7×9mm5. WeightMeter body, 280gMeasuring pliers, 2×200g6. Storage ConditionsTemperature, -10°C~50°C
DF-200 Dual-clamp Digital Phase Meter