3151 EARTH HiTESTER
1999
3151 EARTH HiTESTER
Field measuring instruments
Complies with the
following standards:
IEC61010
EMC
http://www.hioki.co.jp/
60 years of technology and reliability
Ground measurements in a wide
variety of locations
Safer
No cable kinks
Easier to use
9216 CABLE WINDER (supplied)
The grounding resistance meter
with a difference -- from
Functions to meet the requirements of tough environments.
A new concept in grounding resistance measurement from HIOKI.
Taut band meter
provides shock
resistance.
Measurement range
for grounding resistance increased to
115% of nominal
range.
Measurement switch
has tough and durable
design.
Elastomer rotary
knob fits the hand.
Auxiliary grounding resistance (P/C) check function
The size of the auxiliary grounding resistance is a possible source of
error, but can be checked for each auxiliary grounding electrode
separately.(OK if within "P/C CHECK" band)
■ 3151 Specification (accuracy at 23°C ± 5°C, 80% RH or less)
Measurement
item
Grounding
resistance
Grounding
voltage
Measurement range
(effective range in parentheses)
Limit deviation
tolerance
10Ω (0 to 11.5Ω)
±2.5%f.s.
100Ω (0 to 115Ω)
±2.5%f.s.
1000Ω (0 to 1150Ω)
±2.5%f.s.
30V (0 to 30V)
±3.0%f.s.
Using the two-wire measurement method : applied to 100Ω/1000Ω range only.
● Influence of auxiliary grounding resistance: ±5% for fluctuation
of 0 to 5 kΩ .
● Influence of grounding voltage: ±2% for fluctuation of 0 to 5 V;
±5% for fluctuation of 0 to 10 V (50/60 Hz); ±5% for fluctuation of
0 to 3 V. (DC, 16 2/3, 400 Hz)
● Influence of power supply voltage: within specification for
fluctuation of 6 to 10 VDC.
3151 EARTH HiTESTER
Measurement method and measurement frequency
selector switch
This selects the "simple" two-wire measurement method, using a low
ground conductor such as the ground side of a commercial power supply,
or the conventional three-wire measurement method. You can also select a
measurement frequency to reduce the influence of harmonics of the power
supply frequency on the ground current.
● Operating method: AC phase difference.
● Open-circuit terminal voltage: 50 VAC max.
● Measurement current: 15 mA AC max. (3 mA AC max. using
two-wire method)
● Measurement frequency: 575 Hz or 600 Hz selectable.
● Applicable standards: Ground measurement: EN61557-5 ;
Safety: EN61010-1/EN61010-2-031; EMC: EN55011/EN50082-1;
Environment Protection: EN60529-1991 "IP40"
● Overvoltage protection: 250 VAC 1 minute (between E-P (S), E-C
(H) terminals)
● Power supply:R6P(AA) manganese battery✕6 or LR6(AA)
alkaline battery✕6
● Operating time: Minimum 500 operations (using R6P); Minimum
1400 operations (using LR6) (30 second measurement / 30 seconds off)
● Approximate dimensions and weight: 164(W)✕ 119(H)✕
88(D)mm; 800 g (main unit only)
● Supplied accessories: 9214 AUXILIARY EARTHING RODS
(2), 9215 MEASURING CABLE [one each: black 5 m, yellow 10
m, red 20 m, 9216 CABLE WINDER (3)], 9393 CARRYING
CASE
Option
9050 EARTH NETS (set of two)
Use in locations where there is no driven-in ground (where water seepage is present)
DISTRIBUTED BY
HEAD OFFICE :
81 Koizumi, Ueda, Nagano, 386-1192, Japan
TEL +81-268-28-0562 / FAX +81-268-28-0568
E-mail: os-com@ hioki.co.jp
HIOKI USA CORPORATION :
6 Corporate Drive, Cranbury, NJ 08512 USA
TEL +1-609-409-9109 / FAX +1-609-409-9108
All information correct as of Sep, 7, 1999. All specifications are subject to change without notice.
■Inter net HIOKI website h t t p : / / w w w . h i o k i . c o . j p /
3151E1-99B-05K
Printed in Japan
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