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업계정보/전기*전자*계측

대지저항측정기 Ground Resistance Tester EM4055





대지저항측정기  Ground Resistance Tester
EM4055 (MEGABRAS / 미국)

= 접지저항 측정
= 대지비 (Wenner's method)
= High spurious voltage rejection
= Spurious voltage measurement
= 0,01Ω  resolution
= Up to 20KΩ resistance range
= Auto-range
= Alphanumerical display
= Heavy duty equipment
= Automatic interference detection
= Rechargeable battery
= Built-in printer (optional)
= Direct reading of ground resistivity
= Up to 50m selectable distance
= 4000 readings memory
= RS-232 data output
= IP-54 protection
= CE mark


APPLICATION

Earth resistance measuring of simple or complex electrode systems, Ground resistivity measurements (Four terminal Wenner´s principle), and Spurious voltage according to IEC 61557-5

저항측정방법

The equipment injects an electronically generated current in the soil, and measures, with high precision, both that current and the voltage developed in the soil by means of that current flowing through grounding diffusion resistance. The display shows the Resistance value.

조작 주파수

During R measurement operators should select the following test frequencies: 270 Hz ± 1 Hz or 1470 Hz ± 1 Hz

전압계

In the voltmeter function, the equipment operates as a CA conventional voltmeter, making it possible to measure voltages generated by parasitic currents.

측정범위

Resistance: 0 - 20kΩ (autoranging)
Resistivity: 0 - 50kΩm (autoranging)
Voltage: 0 - 60V~

허용오차

Resistance and Resistivity measurements: ± (2% of the measured value ± 2 digits)
Voltage measurement: ± (3% of the measured value ± 2 digits)

지시분해능

0.01Ω in the resistance measurement.
0.01Ωm in the resistivity measurement.
0.1V in the voltage measurement.

출력 전류

The short-circuit current is limited to less than 3.5mA r.m.s. (according the IEC 61557-5 - 4.5 )

IMMUNITY TO SPURIOUS VOLTAGE INTERFERENCE

During the R measurement, it allows for the presence of spurious voltage up to 7V~.

EARTH RESISTANCE OF AUXILIARY RODS

In the R measurement it allows Raux up to 50kΩ with error < 30%

배터리 체크

The battery charge status is verified under normal using conditions.

ADVANCED FEATURES

Automated detection of abnormal conditions that may cause excessive errors (low battery, too high noise interference, too high test spikes resistance)

SOIL RESISTIVITY COMPUTING

When performing soil resistivity measurements, the operator informs to the EM-4055 the distance between spikes and the equipment automatically computes soil resistivity using the Wenner full equation.

SERIAL DATA OUTPUT

RS-232 @ 4800 bps. Suitable for data collection in an external serial printer, computer or data-logger.

BUILT-IN PRINTER (OPTIONAL)

For a printed register document of measured values.

전원

By means of an internal rechargeable battery, 12V 2.3Ah.

배터리충전

A smart, microprocessor-controlled, circuit that adjusts the battery charge to the optimised parameters in order to ensure highest service life. It is supplied by means of an external power supply for 95-240V 50-60Hz (provided with the equipment).

안전기준

It meets the requirements of IEC 61010-1/1990, IEC 61010, 1/1992 amendment 2

E.M.C

IEC 61326-1

ELECTROSTATIC IMMUNITY

IEC 1000-4-2

ELECTRO MAGNETIC IRRADIATION IMMUNITY

IEC 61000-4-3

환경보호

IP54 with closed lid.

최고 고도

3000m

사용환경

(동작시)-10°C to 50°C, (보관시)-25°C to 65°C

습도

95% RH (without condensation)

크기 및 무게

274 X 250 X 124 mm, 약 3kg (본체만)

기본부속품

• Four steel rods.
• Battery charger power supply, 95 to 240V input voltage.
• One 40 meters cable in red colour.
• Two 20 meters cable in blue and green colour.
• One 5 meters cable in black colour.
• One 5 meters cable to connect to the grounding system to be measured.
• Canvas bag.







 

제품번호 : 252570제품
기본사양 : 대지저항측정기 EM4055
판매금액 : 가격협의

구매발주 문의
제품분류소모성자재 > 개인보호구
제품현황재고보유
제조사
거래가능지역전체
가격할부불가능
인도조건없음
제품상태신제품
AS여부가능
세금계산서가능


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