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  • 누설전류계 30032A
  • 누설전류계 30032A
  • 누설전류계 30032A

YOKOGAWA

누설전류계 30032A

828,000원 975,000원
제조사
YOKOGAWA
원산지
JAPAN
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0원 (조건부배송) 지역별 추가배송
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30032A 1mA/60A Leakage Current Clamp-On Meters

 

 

Leakage Current Clamp-On Meters


 

 

Product Overview


Harmonic Filter Function (Available in the Yokogawa 30032A)


1. What is a Harmonic?

Harmonic refers to sinusoidal quantity having a frequency that is an integral multiple of the fundamental frequency (for example, the commercial frequency). When a harmonic is superimposed on the fundamental frequency, the waveform is distorted.


2. Why is it Necessary to Accurately Measure the Leakage Current of the Fundamental Frequency (Commercial Frequency)?

One problem when measuring the leakage current to check the isolation of electrical circuits in power distribution equipment is that the electrical 

isolation cannot be correctly understood due to the influence of a harmonic current. That is, the leakage current flowing from the electrical circuit 

to ground is very small so that, in order to check the isolation of electrical circuits by means of the leakage current, it is necessary to remove the 

harmonic component of the leak current and measure only the current of the fundamental frequency (commercial frequency).


3. The Yokogawa 30032A Employs a Harmonic Filter

Conventional leakage clamp-on testers could not sufficiently remove harmonic current components so measured leakage current values were often larger than the specified value due to the influence of a harmonic current. In this case, retesting with an insulation tester was required, resulting in increased effort and cost for the test. Under these circumstances, Yokogawa Meters & Instruments Corporation has developed the leakage clamp-on tester 30032A, which employs a high-performance harmonic filter that can accurately measure just the fundamental frequency component of the leakage current.

  

 

Product Specifications  

 

Description

Leakage Current Mini Clamp-on; 3/30mA/30/60 Amp

Method of detection

Mean Value

Display

(Bar-graph display: 32 segments)
LCD (Digital display: 3200 counts)

Range Switching

Auto-range

Operating temperature and humidity

0 - 50°, 80% RH or less (no condensation)

Influence of external magnetic field

0.0005% typical 1 (on current value of adjacent cable)

Influence of conductor position

Within accuracy

Safety Standard

Approved for conformity to EN 61010-1,EN 61010-2-032

Circuit voltage

300 Vrms or less

Withstanding voltage

3.7 kV AC for one minute

Power Supply

One CR2032 (Coin-shaped) 3 V battery

Battery Life

Approx. 90 hours (when continuously used)

Auto power-off

Approx. 10 minutes

Diameter of measurable conductor

40 at maximum mm

Dimensions

Approx. 70 (W) x 176 (H) x 25 (D) mm

Weight

Approx. 200 g

Accessories

Instruction manual, battery, Soft case

AC Current

3/30 mA, 30/60A

Frequency Characteristics

50/60 Hz

Accuracy (50/60Hz)

1.0 + 5 (0~30mA)
1.0 + 5 (0~50A)
5.0 + 5 (50~60A)

Measurement Cycle

2 times/second (Digital display), 12 times/second (Bar-graph display)

Temperature Coefficient

0.05% of range /°C or less (within the ranges of 0-18° and 28-50° for measurement of 0-50 A)

Note

  • Can measure leakage currents of 1 mA, which is useful for checking the insulation of low-voltage circuits              and electrical components.
  • Can measure a broad range of currents from leakage currents (at a resolution of 0.001 mA) to load currents         up to 60 A.
  • Typical influence (on the current value of an adjacent cable) from an external magnetic field is 0.0005%.
  • Durability of clamp: More than 50,000 opening/closing events
  • Twice the tensional strength of Yokogawa M&C's earlier model clamps
  • The clamp lever is lengthened by 30%, enabling smooth opening/closing of the clamp even for thick cables           of 40mm in diameter.
  • Approved for conformity to safety standards EN 61010-1 and EN 61010-2-032 (CAT III 300V, pollution                   degree2)

 

 

At 23°C±5°C，75%RH or less

Accuracy: ±( % rdg + dgt) = ±(% readout + value of least significant digit)

AC current

3/30mA, 30/60A

Frequency characteristics

50/60Hz

Accuracy

50/60Hz

1.0 + 5(0~30mA)

1.0 + 5(0~50A)

5.0 + 5 (50-60A) 

 

 

 

AC current measurement

Filter function OFF

Accuracy: ± (% of reading + digits)

Range

Resolution

Accuracy

Maximum
Allowable Current

3mA

0.001mA

0.010 < I ≤32.70mA:
1.0%+5

3.270mA

30mA

0.01mA

32.70mA

30A

0.01A

0.05 < I ≤50.0A:1.0%+5
50.0 < I ≤60.6A:5.0%+5

32.70A

60A

0.1A

60.6A

Filter function ON

3mA

0.001mA

0.010 < I ≤32.70mA:
1.5%+5

3.270mA

30mA

0.01mA

32.70mA

30A

0.01A

0.05 < I ≤50.0A:1.5%+5
50.0 < I ≤60.6A:5.5%+5

32.70A

60A

0.1A

60.6A

Note: Input current of 2nd-order and higher harmonics
: 150 mA rms maximum in the 3 mA/30 mA range
: 62 A rms maximum in the 30 A/60 A range
Filter specifications (3 mA and 30 mA ranges and 30 A and 60 A ranges)
Amplitude ratio at 100 Hz: -38 dB (1.26%) or less (typical: -41 dB)
Amplitude ratio at 120 Hz: -53 dB (0.22%) or less (typical: -56 dB)
Zero correction
3 mA range: Displays 0.000 mA (zero) when 0.010 mA < I
30 A range: Displays 0.00 A (zero) when 0.05 A < I

 


 

 

 Key Features 
   

◆ Leakage current measurement range from 3mA to 60A

◆ Diameter of measurable conductor: 40 mm max.

◆ Easier and clear display

 


 

Accessoires Included


◆ User’s manual
◆ Batteries 
◆ Soft carrying case (RB057)

 

 

Additional Information 

 

Weight

200 g

Dimensions

70 (W) x 176 (H) x 25 (D) mm 

  

 

 

※ 자세한 사항은 'DataSheet'나 'Quick Start Guide'를 참조해 주세요.      



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