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MS5908 TRMS Voltage GFCI RCD Tester Circuit Analyzer

Name: MS5908 TRMS Voltage GFCI RCD Tester Circuit Analyzer
Brand: MASTECH
SKU: 130764521
Availability: InStock

US$ 80 - 96 MOQ: 5 Pieces

Key Specifications

Place of Origin:

Guangdong, China

Brand Name:

MASTECH

Model Number:

MS5908

Shenzhen Graigar Technology Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

ShenZhen

Delivery Detail:

Delivery time depends on order quantity.

Place of Origin Guangdong, China

Brand Name MASTECH

Model Number MS5908

Dimensions 193mm*78mm*38mm

MS5908 TRMS voltage GFCI RCD Tester Circuit Analyzer

Specifications

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.
Peak voltage	153-185V (120V) 280-342V (220V)	The voltage is too high or too low.	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.
Conductor impedance for earth line	For equipment safety <0.25Ω	The impedance is too high	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.
RCD test	RCD is triggered within the specified time.	Fail to be triggered (Invalid test)	RCD goes wrong.	Repair or replace RCD.