MS5908 TRMS voltage GFCI RCD Tester Circuit Analyzer

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$80.00 - $96.00 / Piece | 5 Piece/Pieces (Min. Order)
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Overview
Quick Details
Place of Origin:
Guangdong, China
Brand Name:
MASTECH
Model Number:
MS5908
Measuring Current Range:
10A
Measuring Voltage Range:
200mV/2V/20V/200V/1000V
Measuring Resistance Range:
200 -200M
Measuring Capacitance Range:
20nF-200uF
Measuring Inductance Range:
1000V/1000V
Operating Temperature:
0~60
Dimensions:
193mm*78mm*38mm
Supply Ability
Supply Ability:
100 Piece/Pieces per Day
Packaging & Delivery
Packaging Details
standard export carton
Port
ShenZhen
Lead Time :
7 days

 

 

MS5908 TRMS voltage GFCI RCD Tester Circuit Analyzer

 

 

Specifications

 

Measurement

Ranges

Resolution

Accuracy

Line Voltage

85.0~265.0V

0.1V

±(1.0%+0.2V)

Neutral-Ground V

0.0~10.0V

0.1V

±(2.5%+0.2V)

Peak Line Voltage

121.0~374.0V

0.1V

±(1.0%+0.2V)

Frequency

45.0~65.0Hz

0.1Hz

±(1.0%+0.2Hz)

% Voltage Drop

0.1%~99.9%

0.1%

±(2.5%+0.2%)

Voltage Loaded

10.0~265.0V

0.1V

±(2.5%+0.2V)

Impedance –Hot

0.00~3.00Ω

0.01Ω

±(2.5%+0.02Ω)

Neutral & Ground

>3.00Ω

 

Unspecified

RCD Trip Time

1ms~6.500s

1ms

±(1.0%+2ms)

RCD Trip Current

30mA

0.1mA

±(1.0%+0.2mA)

GFCI Trip timer

1ms~6.500s

1ms

±(1.0%+2ms)

GFCI Trip Current

6mA

0.1mA

±(1.0%+0.2mA)

 

Fault localization and trouble shooting for voltage problems

Measurement Item

Normal measurement result

Fault measurement result

Possible cause

Trouble shooting

Phase voltage

108-132V

(120V)

198-242V

(220V)

The voltage is too high or too low.

The circuit is overloaded.

Redistribute the circuit load.

High impedance points are found in switchboard or circuit.

Locate the high impedance and repair or replace relevant parts.

The supply voltage is too high or too low.

Consult the power supply department

Voltage to earth of zero line

<2V

>2V

Leakage current 

Find the current source: Is there any multipoint ground? Does the equipment or device leak current?

Three-phase imbalance

Check and redistribute the load

Harmonic interference

Increase neutral line conductor, install electrical filter or use other methods to reduce the harmonic interference. 

Peak voltage

153-185V

(120V) 280-342V

(220V)

The voltage is too high or too low.

The supply voltage is too high or too low.

Consult the power supply department.

The electron device in the circuit results in the electric wave distortion.

Revaluate and relocate (if necessary) the electronic device in the circuit

Frequency

60Hz

(50Hz)

The frequency is too high or too low.

The supply frequency is too high or too low.

Consult the electricity department

 

Fault localization and trouble shooting for voltage drop

Measurement Item

Normal measurement result

Fault measurement result

Possible cause

Trouble shooting

Voltage drop

<5%

The voltage drop is too high.

The circuit is overloaded.

Redistribute the circuit load

Compared with power transmission length, the wire is small.

Rearrange the wire in compliance with the relevant standard.

High impedance point exists between the circuit and switchboard.

Repair or replace the parts generating high impedance

 

Fault localization and trouble shooting

Measurement Item

Normal measurement result

Fault measurement result

Possible cause

Trouble shooting

Conductor impedance for live line and zero line

No. 14 line (2.0mm2)

<0.15Ω/m

The impedance is too high

The circuit is overloaded.

Redistribute the circuit load.

No. 12 line  (3.3mm2)

<0.1Ω/m

The wire diameter is too small for the power transmission length.

Check the wire diameter and rearrange the wire accordingly.

No. 10 line (5.2mm2)

<0.03Ω/m

High impedance point exists in the circuit or switchboard.

Locate the high impedance and repair or replace the parts

Conductor impedance for earth line

For personnel safety

<1Ω

The impedance is too high

The wire diameter is too small for the power transmission length.

Check the wire diameterand rearrange the wire accordingly.

For equipment safety

<0.25Ω

High impedance point exists in the circuit or switchboard.

Locate the high impedance and repair or replace the parts

 

Measurement Item

Normal measurement result

Fault measurement result

Possible cause

Trouble shooting

RCD test

 RCD is triggered within the specified time.

Fail to be triggered within the specified time.

 The RCD is installed improperly.

Check the circuit and install the RCD according to the manufacture requirement and relevant standard.

Fail to be triggered (Invalid test)

RCD goes wrong.

Repair or replace RCD.

 

Measurement Item

Normal measurement result

Fault measurement result

Possible cause

Trouble shooting

GFCI

 test

 GFCI is triggered within the specified time.

Fail to be triggered within the specified time.

 The GFCI is installed improperly.

Check the circuit and install the GFCI according to the manufacture requirement and relevant standard.

Fail to be triggered (Invalid test)

GFCI goes wrong.

Repair or replace GFCI.

 

Accessories:

(1) Carrying bag;

(2) Power adapter; 

 

 

 

 

 

 

 

Our Services

 

  

 

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