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Digital arrester tester

Digital Arrester Clamp Tester

PRODUCTS
Digital Arrester Clamp Tester
Model ALCL-40
Digital Arrester Clamp Tester. Model ALCL-40
GENERAL
Lightning arresters are designed to protect a power distribution system by shunting to ground the high voltage surges caused by lightning.
ALCL-40 measures to warn that an arrester is damaged or deteriorating and should not be energized.
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 of CT.
  • Compliant with IEC6099-5.
  • Enabled the measurements for 100nA resolution and harmonics current.
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DETAIL
SPEC
SPECIFICATIONS
CT Sensor
CT : φ40mm
Opening/closing of the jaw : Spring operation
Withstanding voltage : AC2200V, 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 : CT clamp sensor
Measuring range : 0-300μA/3mA/30mA(3range manual)
Input frequency : 45-60Hz
AC conversion : AC coupled true rms responding
A/D conversion : Dual slope integration mode
Display : LCD 3200 count max
Sampling rate : 2 times/sec
Over indication : "OL" mark on LCD
Low battery Indication : "B" 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
Power consumption : Approx. 20mW
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 and Weight :
Unit : 95(W)x160(H)x34(D)mm, 260gs
CT : 135(W)x166(H)x61(D)mm, 1000gs
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)
30mA 10μA(0.01mA)
Harmonic Current Measurement (Fundamental and third harmonics)
Measuring method : PLL method
Minimum fundamental input : More than 3% of full scale in each range
Accuracy : (1%±5digit)±(Basic accuracy of ACA)
-(Error by neighboring harmonics)
* Accuracy specified : More than 4% harmonics are necessary against fundamental harmonics
Accessories :
Soft case : 1
Instruction manual : 1
 
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