ALCL-40L Digital Arrester Clamp Tester37mmφCT, AC leakage current/harmonics

Leakage and Harmonics Current Measurements For Arrester

FEATURES

ALCL-40 is designed to test the diagnostic of OXIDE SURGE ARRESTER.
The least influence from the external magnetic field and noise by triple shielding for CT.
Compliant with IEC6099-5.
Enabled the measurement for 100nA resolution and harmonics current.
Motor operation for opening/closing of the jaw with extensional ABS glass fiber insulation rod.

GENERAL
Lightning arresters are designed to protect a power distribution system by shunting to ground the high voltage surges caused by lightning.
ALCL-40L measures to warn that an arrester is damaged or deteriorated and should not be energized.

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Catalog：e_ca_alcl-40l.pdf
Instruction Manual ：e-ma-alcl-40l.pdf

CT Sensor
CT	φ37mm
Opening/closing of the jaw	Motor operation
Withstanding voltage	AC 2300V, 1 minute (Between the core of CT and CT outer case)

Measuring and Display Unit
Measuring function	Leakage current, Harmonic current(Fundamental and third harmonics)
Measuring method	Dual slope integration mode
Measuring range	AC 0-300μA/3mA/30mA(3range manual)
Input frequency	45-60Hz(Fundamental frequency)
AC conversion	AC coupled true rms responding
A/D conversion	Dual slope integration mode
Display	LCD Max. 3200 count
Sampling rate	2 times/sec
Over indication	"OL" mark on LCD
Low battery Indication	"Low" mark on LCD
Data hold function	"DH" mark on LCD
Auto power off	Approx.10 minutes later after power on
Power supply	AA size Alkaline battery × 4
Limitation of circuit voltage	Less than 500V AC
Operating Temperature	0～40℃, less than 80%RH, w/o condensation
Storage Temperature	-10～60℃, less than 70%RH, w/o condensation
Dimensions	160(W)×950(L)×84(D)(When retracted) 160(W)×2680(L)×84(D)(When stretched)
Weight	Approx. 2.6kgs

AC Current
Accuracy	(23℃±5℃, less than 80%RH) Range/Resolution/Accuracy(45～65Hz) /Max.Input Current 300μA/100nA(0.1μA)/1.2%±8digit/40A rms 3mA/1μA(0.001mA)/1.2%±8digit/40A rms 30mA/10μA(0.01mA)/1.2%±8digit/40A rms Accuracy specified: More than 4% harmonics are necessary against fundamental harmonics

Harmonic Current Measurement (Fundamental and third harmonics)
Measuring method	Automatic turned filter
Minimum fundamental input	More than 3% of full scale in each range
Accuracy	(1%±5digit)±(Basic accuracy of ACA) -(Error by neighboring harmonics)
Accessories	Soft case:1 Instruction manual:1

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