Earth Resistance Tester India,Digital Earth Resistance Tester

Clamp On Earth Resistance Tester ST-CERT PLUS

278A Clamp Earth Ground Tester based on the rogowski coil principle can quickly and safely measure the grounding system without disconnecting circuit ground lines or the need of auxiliary electrodes.

It can measure resistance from 0.01Ω with a resolution of 0.001Ω. These clamps double insulation design makes them durable tools for outdoor work and effective in blocking interference signals from the environment.

CERT PLUS 278A provides the additional feature of providing the leakage current.

Features

Resistance limit alarm
Auto range
Low battery indication

Specification

Model	Range	278A
Auto Range		√
Display Count		4 Digits LCD Display
Jaw Size		32mm
Earth Ground Resistance (Ω)	0.01~0.099Ω	± (1%+0.01)
	0.1~0.99Ω	± (1%+0.01)
	1~49.9Ω	± (1%+0.1)
	50~99.5Ω	± (2%+0.5)
	100~199Ω	± (3%+1)
	200~395Ω	± (6%+5)
	400~590Ω	± (10%+10
	600~800Ω	± (20%+20)
	600~1000Ω	-
	800~1200Ω	±(25%+30)
Leakage Current (A)	0mA~9mA	±(2.5%+1mA)
	10mA~99mA	±(2.5%+5mA)
	100mA~299mA	±(2.5%+10mA)
	0mA~299mA	-
	0.3A~2.99A	±(2.5%+0.1A)
	3A~9.9A	±(2.5%+0.3A)
	10A~20A	±(2.5%+0.5A)
	3A~30A	±(2.5%+0.5A)
Resistance Measurement Frequency	＞1kHz	√
Single Measurement Time	1 Second	√
Current Limit Alarm	1mA~499mA	√
Current Measurement Frequency	50Hz/60Hz	√
Auto Power Off	-	-
RS-232	-	-
Visual and Audible Alarm	-	√
Jamming Signal Recognition	-	√
Over-Range Display	-	√
Data Storage	-	99 Data Sets
Category Safety Ratings	CAT III 300V
General Characteristics
Power	1.5V Battery (LR6) x 4
Display	47mm x 28.5mm
Product Net Weight	1160g
Product Size	285mm x 85mm x 56mm
Standard Accessories	Batteries, Test Ring, Toolbox

FAQ

Do you have a question which we can answer for you? Click here if Yes

CERT278 can measure individaul earth electrode resistance ?

yes , earth electrode should be connected in parallel or series
Earth electrode to be isolated from system ?

CERT278 can be measured in Live condition
278 suitable for Substation application ?

yes , 278 with bigger jaw size 65 x 32mm
CERT278 can measure fault current ?

can measure upto 30 Amps
Measured reading is correct ?

self calibration with known loop resistance
Data storage

300 sets

Downloads

Title	File Type	File Size	Downloads	View	Last Uploaded
Product Datasheet	application/pdf	460.87 KB			August 13 2019 12:59:37

Clamp On Earth Resistance Tester ST-CERT PLUS

Clamp On Earth Resistance Tester ST-CERT PLUS

CERT278 can measure individaul earth electrode resistance ?

Earth electrode to be isolated from system ?

278 suitable for Substation application ?

CERT278 can measure fault current ?

Measured reading is correct ?

Data storage

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Privacy Disclaimer:
We will only publish your first name. Your Last name will not published to maintain your privacy. Your mobile no will not be revealed or published to maintain your privacy. It will only be maintained in our database. You may receive product or information updates from time to time on WhatsApp. Your email ID will not be revealed or published to maintain your privacy. It will only be maintained in our database. You may receive product or information updates from time to time on email. Should you post your question, it is assumed that you agree to the above.