Low Price Handheld Digital Dual-Clamp Duplex Phase Meter

Product Description

General Information:
EP8420 Dual-clamp digital phase meter is a multi-functional instrument developed specially for on-site test. Featured with high precision, good stability, less power consumption and easy operation, it measures directly A.C. voltage and A.C. current even when the tested circuit is not opened, as well as phase between two voltages, two currents and the voltage-current. In addition, it measures indirectly power factor and power of the circuit, identifies three-phase sequence, wiring group, inductive and capacitive circuit of transformer, tests secondary circuit and the busbar differential protection system, tells the phase relation between different CT groups of differential protection, examines whether the wiring of watt-hour meter is correct, and checks and repairs circuit equipment, etc. The instrument has huge LCD screen, with letters reaching 40mm in height and looks greatly clear thanks to the backlight design. The instrument is applicable to electricity, petrochemical engineering, metallurgy, railway, meteorology, industrial and mining enterprises, academic institutions, colleges and metrological sectors, etc.

Technical Specifications
Reference Conditions and Operating Conditions

Influence Factors	Reference Conditions	Operating Conditions	Remarks
Ambient environment	23ºC±1ºC	-10ºC~40ºC
Ambient humidity	40%~60%	<80%
Signal waveform	Sine wave	Sine wave	β=0.05
Signal frequency	50HZ±1HZ	45HZ~65HZ
Working voltage	9V±0.1V	9V±1V
Phase current range applicable	1A±0.1A	10mA~20.0A
Phase voltage range applicable	100V±10V	30V~600V
External electric field and magnetic field	Shall be avoided
Location of tested wire	The tested wire is located in approximate geometric center of the clamp jaw

General Specifications

Function	Directly test phase, A.C. current, A.C. voltage, A.C. leak current, and phase sequence; identify grouping, inductive, and capacitive circuit of transformer; and indirectly test power factor and power.
Power Supply	DC9V alkaline dry batteries (1.5V AA×6)
Power Consumption	Nearly 35mA at the maximum if backlight on, batteries work continuously for nearly 40 hours.
	Nearly 5mA if backlight off, batteries work continuously for 300 hours.
Display	LCD display, blue screen with backlight design, applicable to dark places.
LCD Size	70mm×62mm
LCD Display Field	64mm×54mm
Instrument Size	(L x W x H): 196mm×92mm×54mm
Jaw Size:	φ7.5mm×13mm
Sampling Rate	Nearly 3 times/second
Range	A.C Voltage: 0~20V/200V/600V
	A.C Current: 0~200mA/2A/20A
	Phase: 0~360°
Range of tested signal during phase measuring	When measuring phase U1-U2: 30V~600V
	When measuring phase I1-I2: 10mA~20.00A
	When measuring U1-I2 or I1-U2: 10V~600V, 10mA~20.00A
Data-hold	Press HOLD to hold data during test, and DH displays.
Auto power-off	The instrument shut off automatically in 15min after startup so that to reduce battery consumption.
Voltage test	When the battery voltage is less than 7.2v, the low voltage symbol appears, reminding to replace the battery.
Mass of instrument	The body is nearly 550g (battery included), the clamp is nearly 170g x2, and the test wire is nearly 250g.
Length of test wire	1.5m
Line length of current clamp	2m
Operating temperature and humidity	-10ºC~40ºC; 80%Rh and less
Storage temperature and humidity	-10ºC~60ºC; 70%Rh and less
Input impedance	Input impedance of tested voltages: 2MΩ
	Input impedance of voltage when testing phases U1U2: 40kΩ
Withstand voltage	Withstand voltage between upper cover of the instrument and bolt on battery cover place is 2000V/50Hz sine wave A.C. current for one minute.
Insulation	Insulation between wires and the shell of instrument and insulation between two voltage input ends ≥10MΩ.
Structure	Double insulation

Basic Errors and Performance Indexes under Reference Conditions

Category	Range	Resolution	Basic Error
Voltage	20V	0.01V	±(1.2%rdg+2dgt)
	200V	0.1V
	500V	1V
Current	200mA	0.1mA	±(1.0%rdg+2dgt)
	2A	1mA
	10A	10mA
Phase	0~360°	1°	±1°

Please contact EP Hipot Electric for more details on China Portable China Portable Dual Clamp Digital Phase Meter EP8420.