產品簡介

NASGQ數(shù)字雙鉗相位伏安表是專為現(xiàn)場測量電壓、電流及相位而設計的一種高精度、低價位、手持式、雙通道輸入測量儀表。NASGQ數(shù)字雙鉗相位伏安表可以很方便地在現(xiàn)場測量U-U、I-I及U-I之間的相位，判別感性、容性電路及三相電壓的相序，檢測變壓器的接線組別，測試二次回路和母差保護系統(tǒng)，讀出差動保護各組CT之間的相位關系，檢查電度表的接線正確與否等。采用鉗形電流互感器轉換方式輸入被測電流，因而測量時無需斷開被測線路。測量U1-U2之間相位時，兩輸入回路完全絕緣隔離，因此完全避免了可能出現(xiàn)的誤接線造成的被測線路短路、以致燒毀測量儀表。顯示器采用了高反差液晶顯示屏，字高達25mm，屏幕角度可自由轉換約70°，以獲得良好的視覺效果。NASGQ數(shù)字雙鉗相位伏安表外殼采用工程絕緣材料，另配橡皮防振保護套，安全、可靠。

產品別名

相位表、雙鉗相位表、雙鉗相位伏安表、鉗形相位表、鉗形相位伏安表、數(shù)字雙鉗相位表、數(shù)字式雙鉗相位表、低壓伏安相位檢測表、手持式數(shù)字雙鉗相位伏安表、雙鉗式數(shù)字相位表、雙鉗數(shù)字式相位表、雙鉗式伏安相位表、雙鉗伏安相位表、數(shù)顯雙鉗相位表

產品特性

1、不需拆母線,一鍵全自動測量, 精度高,穩(wěn)定性好, 優(yōu)于國內技術

2、量程自動轉換,大屏幕液晶顯示,漢字菜單操作提示,可儲存和打印數(shù)據(jù)

1、工作條件

  1、環(huán)境溫度：（23±5）℃

  2、環(huán)境濕度：（45～75）%RH

  3、被測信號波形：正弦波、β=0.02

  4、被測信號頻率：（50±0.2）Hz

  5、被測載流導線在鉗口中的位置：任意

  6、測量相位時被測信號幅值范圍：100～220V、0.5A～1.5

  7、外參比頻率電磁場干擾：應避免

2、基本誤差極限 

項    目

NASGQB

NASGQE

交流電壓測量誤差

量   限

20V

200V

500V

20V

200V

500V

分 辨 率

0.01

0.1

1

0.01

0.1

1

基本誤差極限

±(1.2%RD+2）

±(1.0%RD+2)

±(1.2%RD+2)

±(0.3%讀數(shù)+0.2%量程）

輸入阻抗

各量限均為2MΩ

各量限均為2MΩ相位測量時，電壓端輸入阻抗>500KΩ

交流電流測量誤差

200mA

2A

10A

200mA

2A

10A

0.1mA

1mA

10mA

0.1mA

1mA

10mA

基本誤差極限

±(1.0%RD+2)

工頻相位測量誤差

范  圍

0～360°

分辨率

1°

±3°

±2°

工作誤差

1、額定工作條件

1、環(huán)境溫度：（0～40）℃

2、環(huán)境濕度：（20～80）%RH

3、被測信號波形：正弦波、β=0.05

4、被測信號頻率：（50±0.5）Hz

5、被測載流導線在鉗口中的位置：任意

6、測量相位時被測信號幅值范圍

測U1-U2相位時：30V～500V

測I1-I2相位時：10mA～10.00A

測U1-I2 或I1-U2相位時：10V～500V、10mA～10.00A

7、外參比頻率電磁場干擾：應避免

2、額定工作誤差極限

在1所述額定工作條件下，各被測量的額定工作誤差極限不超過相應基本誤差極限的兩倍。

其它技術特性

1、顯示位數(shù)：三位半

2、采樣速率：3次/秒

3、電源：單個 9V迭層電池、電源電流小于5mA

4、重量

表體：280g

測量鉗：2×200g

Product introduction

NASGQ series DigitalDisplay Clamp-on 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. It's easy tomeasure the phase between U-U, I-I and U-I, identify the inductivecircuit ,capacitive circuit and the phase sequence of three-phasevoltage, detect the wiring group of transformer, test the secondarycircuit and bus differential protection system, display the phaserelationship among the CT groups of a differential protectionsystem, and check if the wire of electric meter was correctlyconnected. When testing customers do not need cut off the testedcurrent which input by slip core current transformer. Whenmeasuring the phase between U1 and U2, the two input circuit loopare completely isolated, so the possible missconnection is absolutely avoided, which may result in shortcircuit and may even burn the meter. The monitor of the device ishigh-contrast LCD screen, and the character in which could be ashigh as 25mm, and can be freely rotated approximately 70°, which helps to obtain the best visualeffects.

The shell of the device is made ofengineering insulating material, together with arubber–made anti-vibration protection kits forsafety and reliability.

Alsocalled name

Phase meter, clamp phase meter, digitalclamp phase meter

The Characteristics of theproducts

1. Withstand Voltage

Parts between voltage input terminal andmeter shell, parts between the iron core of the clamp-currenttransformer and secondary windings can stand 1000V/50Hz. Partsbetween the two voltage input terminals can stand Sinusoidal ACVoltage 500V/50Hz for 1min when testing.

2. Insulation Resistance

Between meter circuit and meter shell,between the two voltage inputterminals:≥10MΩ

The parameters of theproducts

1. Intrinsic Error

1.1 Reference OperatingConditions

(1) Temperature:(23±5)℃

(2) Humidity: (45~75)% RH

(3) Wave forms of measured signal: sinewave β=0.02

(4) Frequency of measured signal:(50±0.2)Hz

(5) Position of Measured currentcarrying conductor in the nipper jaw: Optional position

(6) Amplitude range of measured signalwhen measuring phase: 100~220V, 0.5A~1.5A

(7) External reference freetic interference: Should be avoided

1.2 The limits of intrinsicerror

project

NASGQB

NASGQE

Error of AC Voltage

Measure range

20V

200V

500V

20V

200V

500V

Resolution

0.01

0.1

1

0.01

0.1

1

Intrinsic limits of error

±(1.2%RD+2）

±(1.0%RD+2)

±(1.2%RD+2)

±(0.3%RD+0.2%Range）

Input Impedance

All the measure range is 2MΩ

All the measure range is 2MΩ Voltage inputimpedance of phase testing: >500KΩ

Error of AC Current

200mA

2A

10A

200mA

2A

10A

0.1mA

1mA

10mA

0.1mA

1mA

10mA

limits of intrinsic error

±(1.0%RD+2)

±(0.3% RD +0.2%Range）

Error ofuencyPhase

Range

0～360°

1°

±3°

±2°

2. Operating error

2.1 Rated OperatingConditions

(1) Temperature(0~40)℃

(2) Humidity: (20~80)% RH

(3) Wave forms of measured signal: sinewave β=0.05

(4) Frequency of measured signal:(50±0.5)Hz

(5) Position of Measured currentcarrying conductor in the nipper jaw: Optional position.

(6) Amplitude range of measured signalwhen measuring phase,

    Phase U1-U2:30V~500V

    Phase I1-I2:10mA~10.00A

    Phase U1-I2 orI1-U2: 10V~500V, 10mA~10.00A

(7) External reference freetic interference: should be avoided

2.2 Limits of rated operatingerror

   Under the conditionsdescribed in 1, the limits of rated operating error will not exceedtwice of the limits of intrinsic error.

3. Other technicalparameters:

(1) Display: three and halfdigital

(2) Sampling rate: 3 times/seconds

(3) Power supply: single laminatedbatteries with 9V, the current of power supply is less than 5mA.

(4)Dimension:

The size of the shell of meter:192mm×95mm×55mm

The size of the shell of clamp:140mm×42mm×20mm

The size of jaws:Φ7mm×9mm

(5)Weight:

The weight of meter: 280g

The weight of clamp:2×200g

(6)the conditions of storage:

Temperature: -10℃~50℃