ETCR4000 series digital phase voltammetry meterDetailed product description：

1、 Introduction
The ETCR4000 series digital phase volt ampere meter is a carefully designed and manufactured dual channel, multifunctional, digital, handheld measuring instrument for on-site measurement of phase, voltage, current, leakage current, phase sequence, etc. It adopts the latest CT technology and digital integration technology to ensure high precision, stability, and reliability for year-round testing. It is widely applicable in fields such as electricity, metering, communication, railway, petroleum, chemical, metallurgy, construction, scientific research and teaching units, industrial and mining enterprises, etc.
The ETCR4000 series digital phase volt ampere meter can measure the phase between any two phases of voltage (U-U), any two phases of current (I-I), and any phase of voltage and current (U-I) on site. It can also distinguish between inductive and capacitive circuits, determine the phase sequence of three-phase voltage, detect the wiring group of transformers, test the secondary circuit and bus differential protection system, read out the phase relationship between the CT of each differential protection group, and check the correctness of the wiring of the electricity meter.
The ETCR4000 series digital phase volt ampere meter adopts the latest CT technology. When detecting current, there is no need to disconnect the measured line, and non-contact measurement is required. When detecting the phase between U1-U2, the two inputs are completely insulated and isolated. The housing is made of engineering insulation material and equipped with rubber anti vibration protection sleeve, which effectively ensures the safety of operation and avoids possible short circuits in the measured line caused by misconnection, which may burn out the measuring instrument.
The ETCR4000 series digital phase voltammetry meter adopts a large high contrast blue screen backlit LCD (64 mm × 54mm), which displays clearly at a glance! Its current clamp needle shaped design is particularly suitable for places with dense wiring.

2、 Technical specifications

Function	Phase measurement between any two phases; Measurement of AC current and leakage current; AC voltage measurement; Distinguish between inductive and capacitive circuits, phase sequence of three-phase voltage, and wiring group of transformers, etc
Power supply	DC9V＆#160; Alkaline dry battery LR6 × 6 can be used continuously for about 300 hours
display mode	3-1/2 LCD display
Instrument size	Width, height, and thickness: 92mm × 192mm × 50mm
LCD size	Display area: 64mm × 54mm; Word height: 40mm
Jaw size	7.5mm (40mm optional)
measurement range	Phase: 0-360 °; Current: 0-20mA/2A/10A; Voltage: 0-20V/200V/500V
resolution	Phase: 1 °; Current: 0.1mA; Voltage: 0.01V
measurement accuracy （50Hz,23℃±1℃，40-60%RH）	Phase: ± 3 °
	Current: ± 1% ± 2dgt
	Voltage: ± 1.2% ± 2dgt
Line voltage	Circuit testing below AC500V
sampling rate	About 3 times per second
signal frequency	Sine wave 45Hz~55Hz β=0.05
data retention	Data retention function: "DH" symbol display
Backlight function	Blue screen backlight, suitable for reading in dark places
Auto Shutdown	After about 15 minutes of startup, the instrument panel automatically shuts down to reduce battery consumption
battery voltage	When the battery voltage is low, the low battery voltage symbol is displayed, reminding to replace the battery
Instrument quality	The host weighs about 590g (including battery), the pointed nose current clamp weighs about 175g × 2, and the round mouth high current clamp weighs about 120g
Working temperature and humidity	-10℃～40℃； Below 85% RH
Storage temperature and humidity	-20℃～60℃； Below 70% RH
input impedance	AC voltage input impedance: 2M Ω; voltage input circuit impedance when measuring U1-U2 phase: 40K Ω
insulation resistance	Between the instrument circuit and the casing, and between the two voltage input terminals: ≥ 10M Ω
Voltage resistance	Test on the ability to withstand a sine wave AC voltage of 1000V/50Hz between the voltage input terminal and the case, between the clamp current transformer core and clamp handle, and between the secondary winding coils, and between the two voltage input terminals, capable of withstanding a sine wave AC voltage of 500V/50Hz for 1 minute