HEME GEO 30
Ground Loop Tester
HEME GEO 30
• Ground loop resistance – 0.025 Ω 1500 Ω,
• Ground leakage current – 0.2 mA 1000 mA,
• Current 0.2 … 30 A TRMS,
• Continuity loop test alarm for R < 40 Ω,
• HOLD function to store measurements
• HI / LO Alarm for rapid measurement
evaluation
• Recording function for automatic storage of
measured values
• Overload protection: 200 A
• Easy handling – professional, large display
• Automatic self calibration
• Carrying case and resistance check loop
included
• 2 years warranty 2 years calibration interval
Measuring System
Description
The clampon ground testing technique used by the HEME GEO 30
simplifies ground loop testing and enables non intrusive leakage
current measurement.
As a complement to common continuity and earth measurements
performed with the: HANDY GEO and SATURN GEO Series, the
HEME GEO 30 clampon ground tester offers the advantage of rapid
earth testing in a completely safe way similar to the stakeless earth
measurement available in the SATURN GEO X.
This technique offers time saving and complete safety to the user. In
addition the HEME GEO 30 will indicate and measure current flow
from a few µA up to 30 A. This sensitive TRMS current measurement
is especially useful when it comes to measuring leakage currents
flowing to earth.
The HI/LO function automatically evaluates the measured value by
comparing against upper and lower limits. The record function allows
automatic storage of measured values.
Rg
Rg
R1
R2
R3...Rn
The compact and rugged design makes the HEME GEO 30 easy to
use in small places and harsh environments, while the display HOLD
and the continuity testing with an audible alarm function ensures
convenience in use. The novel technique means that continuity
testing can be completed without breaking the circuit.
Applications:
• Earth resistance of various installations (high voltage pylons,
buildings, cell phone substations, RF transmitters etc.)
•
Inspection of lightning protection systems
•
Leakage current measurement
Rg
R1
R2
R3...Rn
Principle
Operating Error:
Storage temp. range:
Reference temp. Range:
Storage humidity:
Operating humidity:
Display:
Protection:
Safety:
Weight:
Conductor Size:
Dimension:
EMC
Emission:
Immunity:
Refers to the operating temperature
range and is guaranteed for 2 year
20 °C …+60 °C
(4 °F +140 °F )
+23 °C ± 5 °C
(+73° F ± 9 °F )
< 75% RH
< 85% RH
9999 digit LCdisplay with special symbols
IP20 according to IEC 529/EN 60
300V, CAT III / pollution degree 2 IEC
610101
640 g (1.4 lbs)
23mm (0.9") approx.
257 mm (L) x 100 mm (W) x 47 mm (H)
10" (L) x 3.9" (W) x 1.9" (H)
IEC 1000 42, IEC 613261 class B
IEC 6100042, 8 kV (air) criteria A
IEC 6100043 3 V/m performance
criteria A
Auto
“OL” on display
0.4 sec
1.667 kHz
9V alkaline (type IEC 6 LR 61)
40 mA
Display symbol
Range Selection:
Overload ind.:
Measuring time:
Measur. frequency:
Auxiliary power:
Power consumpt.:
Low bat. indication:
Range
Resolution
0.20 30.00 A
0.01 A
Operating error
±2.0% rdg
± 0.03 A
HI/LO Limit Evaluation
Values from 0Ω to 1510Ω may be preset for automatic comparison. If
the measured value is outside of the limit an audible and visual signal
is given.
Recording
Measured values are stored with a defined time interval from 1 to
255s. Recorded values may then be recalled on the display of the
instrument.
Ground Loop Tester
HEME GEO 30
1 Battery 9V alkaline (type IEC 6LR61, installed)
1 Resistance test/check loop
1 Operating instructions E/G/F
1 Professional robust carrying case
SE 8130 Z
Ground Loop Resistance (Autorange)
Operating temp.:
0° C ... +50° C
(+14° F... +122° F)
1)
Range
Resolution
Operating error
0.025 0.250 Ω
0.002 Ω
±1.5% rdg ± 0.05 Ω
0.250 9.999 Ω
0.02 Ω
±1.5% rdg ± 0.1 Ω
10.00 99.99 Ω
0.04 Ω
±2.0% rdg± 0.3 Ω
100.0 199.9 Ω
0.4 Ω
±3.0% rdg ± 1.0 Ω
200.0 400.0 Ω
2Ω
±5.0% rdg ± 5 Ω
400.0 600.0 Ω
5Ω
±10% rdg ± 10 Ω
± 20%
600.0 1500 Ω
20 Ω
1) Loop resistance with no inductance, external magnetic field < 50 A/m,
external electrical field < 1 V/m, conductor centered.
Current A~
(Autorange, 50/60 Hz, True RMS, crest factor < 3.0 )
Operating temp.:
10° C ... +50° C
(+14° F... +122° F)
Continuity
Beep if resistance < appr. 40 Ω
Ground/leakage current mA~
(Autorange, 50/60 Hz, True RMS, crest factor < 3.0)
Operating temp.:
10° C ... +50° C
(+14° F... +122° F)
Range
Resolution
0.200 1.000 mA
0.001 mA
1.00 10.00 mA
0.01 mA
10.0 100.0 mA
0.1 mA
100 1000 mA
1 mA
Operating error
±2.5% rdg
± 0.05 mA
±2.5% rdg
± 0.05 mA
±2.0% rdg
± 0.3 mA
±2.0% rdg
± 3 mA
Distributor:
Printed in Germany
Technical modifications reserved
Publication A22500E
www.lem.com
LEM NORMA GmbH
Export department
Liebermannstraße F01
CAMPUS 21
A2345 BRUNN AM GEBIRGE
TEL:
+43(0)2236 691 502
FAX:
+43(0)2236 691 400
Email: lna@lem.com
UNITED KINGDOM & IRELAND
LEM HEME LTD.
1 Penketh Place
West Pimbo
Skelmersdale
,Lancashire WN8 9QX
TEL:
+44(0)1 695 72 07 77
FAX:
+44(0)1 695 50 704
Email: luk@lem.com
NAFTA
LEM Instruments Inc.
23822 Hawthorne Boulevard #100
USTORRANCE, CA 90505
TEL:
+1 310 373 09 66
FAX:
+1 310 373 90 56
Email: liu@lem.com
LEM Instruments, Inc.
Camino Real, 871 dpto. 502
San Isidro Lima 27 Perú
TEL:
+ 511 8445559
FAX:
+ 511 4223922
Email: cpg@lem.com
Belgium & Luxembourg
LEM Belgium sprlbvba
Route de PetitRoeulx, 95
B7090 BraineleComte
TEL:
+32 67 550 114
FAX:
+32 67 550 115
Email: lbe@lem.com
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