R1L-C Ground Resistance Test System
R1L-C Ground Resistance Test System
•
•
•
•
•
•
Measures Ground Resistance 2, 3, 4 Point
Auto Ranging with Manual Override
Excellent Rejection to Noise and Stray Current
2Ω to 20KΩ Full Scale, 5 Ranges, 1m Ω Resolution
Rechargeable Battery
External 12-28VDC input for Field Recharging
DESCRIPTION
The Model R1L-C is a series of portable ground resistance
ohmmeters designed to measure grounding system resistance, as
well as soil resistivity, over ranges from milliohms to 20KΩ full
scale. The R1L-C is capable of Wenner, Fall of Potential, 62%
methods as well as bond and continuity measurements. Two,
three and four point measurements are standard for this
instrument.
APPLICATION
CONTROLS AND DISPLAYS
Readings are displayed on a 3.5 digit LCD display with decimal
points. Indications are displayed for “low battery”, “excessive
stray current”, “excessive current electrode resistance”, and
“excessive potential electrode resistance”. Battery charging is
indicated by an LED. A “Push to TEST” pushbutton turns on
power and takes a reading. Range selection is automatic with
“UP” and “DOWN” pushbuttons providing manual over-ride by
one range. Four five-way binding posts are used to connect the
test leads. Two binding posts allow connection of the external
DC source for field recharging.
Ground Rods Included with R1L-C and CRA only
Rods may be purchased separately for model R1L-CR
Two and three wire configurations can be used when measuring
grounding effectiveness of existing ground rods and other
grounding systems. In the four wire mode, the R1L-C measures
soil resistivity over areas where the test rods can be placed as
close as desired and up to 150 ft apart (see Figure A is an,
example of 4 wire soil resistivity measurement). Using a
resistivity chart or simple formula, the ohmic reading is
converted to a soil resistivity measurement in ohm-cm.
PHYSICAL AND POWER
The R1L-C is housed in a rugged heavy-duty plastic case that
seals against water and dirt. The Model R1L-C is powered by an
internal rechargeable NiCad battery. The NiCad battery may be
recharged from either an external 12-28 VDC source via front
panel binding posts or AC power. Recharging from an external
12 to 28V DC source allows simple use of automotive or other
portable power where ac outlets may not be available, making
the R1L-C a fully field-grade rechargeable ground test system.
ACCESSORY KIT
The accessory kit is built for tough field duty in PPM’s “Ready
Rugged Right” tradition. It houses the 4 stainless steel test rods,
electrical insulating gloves consisting of a rubber insulating
insert and outer leather glove to protect against cuts and tears, 2
rugged rewind 250 ft test leads and a pair of 75 ft test leads
wrapped on tough plastic holders. The kit is designed for quick
setup and teardown in the field. The stainless steel ground rods
are solid rods with welded handles and wing nut connectors. A
helix is ground into the ½ inch diameter rods enabling them to
cut through very rough terrain.
PPM, Inc., Cleveland Ohio • Phone: 216 595-3200 •Fax:216-595-3203 • ppm@ppminc.com • www.ppminc.com
R1L-C Ground Resistance Test System
Range
Resolution
Test Current
Max Resistance in Current Path`
Test Voltage
Max Resistance in Voltage Path
Connections
Open Circuit Voltage
Accuracy (of Reading) + 2 digits
Test Frequency
Internal Rechargeable Battery
Battery Life
Recharge Source
Display
Autorange
Indicators
Weight of Instrument
Weight of Accessory Case
Accessories Supplied R1L-C &
CRA
Accessories Supplied R1L-CR
Operating Temperature
Storage Temperature
2Ω
20Ω
200Ω
2000Ω
20,000Ω
1mΩ
40mA
1.5KΩ
80mV
20KΩ
10mΩ
4mA
15KΩ
80mV
20KΩ
100mΩ
4mA
15KΩ
800mV
20KΩ
1Ω
0.4 mA
150KΩ
800mV
20KΩ
10Ω
0.4mA
150KΩ
8V
20KΩ
<35VPk <35VPk <35VPk <35VPk <35VPk
±1%
±2%
±2%
±2%
±2%
25.6 Hz
4 NiCd cells
>1000- 15 second tests
110 VAC 50/60 Hz and external 12 to 28V DC
3.5 Digit, 4.5 digit at 20KΩ range
Includes Manual Over-ride ± one range
Battery Condition, Battery Charging, Over Range,
Excessive Stray Current, Excessive Noise
8.5 Lbs
27 Lbs with all accessories
1 carrying case that holds: 4 Stainless Steel Helix
Heavy Duty Ground Rods, Linemens Gloves, 2-250
Ft. Wire spools on take up reels with handles, 2 sets
75 Ft test leads on tough plastic holders for easy storage, plus line cord, batteries and instruction manual
Same as above without Stainless Steel Helix Heavy
duty Ground Rods
-40°C to +55°C
-51°C to +71°C
Options: 62.5: for measuring 62.5% procedure ground test
Converts model R1L-CR as follows:
• Adds 2 Ground Rods
Removes all wire accessories
• Adds 1 105 ft 14 Ga spool of test lead wire packaged same as the 250 ft roll
• Adds Qty 1- 65 ft 14 Ga test leads packaged same as the 75ft test leads
• Adds Qty 1 6 ft 14 Ga test lead terminated same as the 75 ft test leads
R1L-C
NSN 6625-01-377-6166
R1L-CR NSN 6625-01-494-2684
R1L-CRA NSN 6625-01-520-4267
Meets Mil-Std. PRF 28800, Class 2, for Navy shipboard, submarine and shore applications
PPM, Inc., Cleveland Ohio • Phone: 216 595-3200 •Fax:216-595-3203 • ppm@ppminc.com • www.ppminc.com
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising