AEMC 6416 User manual

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Copyright © Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments. All rights reserved.
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Chauvin Arnoux®
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Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
the instrument to our repair and calibration
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair and
calibration section at
Serial #:
Cata
Model #: 6416
ll in the appropriate date as indicated:
Date Received:
Date Calibration Due:
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4Clamp-on Ground Resistance Tester Model 6416
TABLE OF CONTENTS
6
1.1 PRECAUTIONS FOR USE .................................................................... 7
1.2 RECEIVING YOUR SHIPMENT ............................................................ 8
1.3 ORDERING INFORMATION .................................................................. 8
1.3.1 ACCESSORIES AND REPLACEMENT PARTS ........................ 8
9
2.1 DESCRIPTION........................................................................................ 9
2.2 FEATURES ............................................................................................ 10
2.3 APPLICATIONS .................................................................................... 10
2.4 DISPLAY ................................................................................................ 11
2.5 CONTROL FEATURES......................................................................... 14
2.6 AUDIBLE SIGNALS .............................................................................. 15
2.7 ROTARY SWITCH FUCTIONS ............................................................ 15
2.8 BUTTONS FUNCTIONS....................................................................... 16
17
19
4.1 MENU ITEMS ........................................................................................ 19
4.2 SET-UP MENU DISPLAYS................................................................... 19
4.3 SELECTING A SPECIFIC MENU ........................................................ 20
4.4 SET-UP MENUS.................................................................................... 20
4.5 CALIBRATION LOOP ........................................................................... 23
5.1 INSERTING THE BATTERIES............................................................. 24
5.2 SETTING THE DATE AND TIME ......................................................... 24
5.3 DISPLAY EXAMPLE ............................................................................ 25
5.4 TURNING THE INSTRUMENT ON...................................................... 25
5.5 TURNING THE INSTRUMENT OFF.................................................... 26
5.6 STANDARD AND ADVANCED MODES .............................................. 26
5.7 MEMORY ............................................................................................... 26
5.7.1 MEMORY CAPACITY................................................................. 26
5.7.2 STORING MEASUREMENTS INTO MEMORY ....................... 26
5.7.3 READING STORED DATA......................................................... 27
5.7.4 ERASING THE MEMORY.......................................................... 27
............................................ 27
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Clamp-on Ground Resistance Tester Model 6416 5
5.8 ALARM MANAGEMENT....................................................................... 27
5.8.1 VOLTAGE ALARM...................................................................... 28
5.8.2 CURRENT ALARM..................................................................... 28
5.8.3 IMPEDANCE ALARM................................................................. 28
5.8.4 NO ALARM DETECTION........................................................... 29
5.8.5 PRIORITY OF THE ALARMS .................................................... 29
.................................................................... 30
6.1.1 STANDARD MODE .................................................................... 30
6.1.1.1 MAKING A MEASUREMENT .............................................. 30
6.1.1.2 MEASUREMENT RESULTS ............................................... 31
6.1.2 ADVANCED MODE .................................................................... 31
6.1.2.1 MAKING A MEASUREMENT .............................................. 31
6.1.2.2 MEASUREMENT RESULTS ............................................... 32
6.1.3 GENERAL INFORMATION........................................................ 33
6.2 ROTARY POSITION (A) ....................................................................... 34
6.3 ROTARY POSITION - (MR).................................................................. 34
6.3.1 DISPLAYING STORED MEASUREMENTS............................. 34
6.3.1.1 DISPLAYED IN STANDARD MODE ................................... 35
6.3.1.2 DATA DISPLAYED IN ADVANCED MODE ........................ 36
38
7.1 REFERENCE CONDITIONS................................................................ 38
7.2 ELECTRICAL ........................................................................................ 38
7.2.1 LOOP RESISTANCE MEASUREMENT ................................... 38
7.2.2 LOOP INDUCTANCE MEASUREMENT................................... 39
7.2.3 CONTACT VOLTAGE (TOUCH VOLTAGE).............................. 39
7.2.4 CURRENT MEASUREMENT .................................................... 39
7.2.5 POWER SUPPLY ....................................................................... 40
7.3 ENVIRONMENTAL................................................................................ 40
7.4 MECHANICAL ....................................................................................... 41
7.5 SAFETY ................................................................................................. 41
8.1 CLEANING ............................................................................................ 42
8.2 BATTERY REPLACEMENT ................................................................. 42
8.3 REPAIR AND CALIBRATION ............................................................... 43
8.4 TECHNICAL ASSISTANCE.................................................................. 43
8.5 LIMITED WARRANTY .......................................................................... 44
8.6 WARRANTY REPAIRS ......................................................................... 44
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Clamp-on Ground Resistance Tester Model 6416 7
PRECAUTIONS FOR USE
This instrument and its accessories comply with safety standards EN 61010-1,
EN 61010-030, and EN 61010-2-032 for voltages of 600 V in Category IV at an
altitude of less than 2000 m with a pollution degree of not more than 2.
explosion, and destruction of the instrument and of the installations.
The operator and/or the responsible personnel must carefully read and clearly
understand the various precautions to be taken in use. Sound knowledge and
a keen awareness of electrical hazards are essential when using this
instrument.
may be compromised, thereby endangering you.
Do not use the instrument on networks of which the voltage or category
exceeds those mentioned.
Do not use the instrument if it seems to be damaged, incomplete, or poorly
closed.
Before each use, check the condition of the insulation on housing. Any item of
which the insulation is deteriorated (even partially) must be set aside for repair
or scrapping.
Use personal protection equipment systematically.
All troubleshooting and metrological checks must be performed by competent
and accredited personnel.
Avoid impacts on the measurement head, in particular the air gap.
malfunction.
All metal objects or wires connected to the electrical system should be
assumed to be lethal until tested. Grounding systems are no exceptions.
Use extreme caution when using the instrument around energized electrical
equipment.
Never attempt to use the instrument to twist or pry the ground electrode or
ground wire away from the equipment being grounded.
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Clamp-on Ground Resistance Tester Model 6416 9
PRODUCT FEATURES
DESCRIPTION
The Clamp-on Ground Resistance Tester Model 6416 measures grounding
electrodes and grid resistance without the use of auxiliary rods. Clamp-on ground
resistance testers can be used in multi-grounded systems without disconnecting
the ground system under test. The Model 6416 simply clamps around theground
conductor or rod and measures the resistance to ground. By performing
grounding connections and bonds. Resistance and continuity of grounding loops
around pads and buildings can also be measured.
The Model 6416 includes a current measurement function. The ground tester’s
Battery life information is displayed at power-up and the Auto Power OFF feature
can be enabled for power management. Additional features include the large
OLED (Organic Light Emitting Diode) display that ensures high readability of
data. The Buzzer and Auto Power OFF features can be disabled at any time.
The Model 6416 is equipped with an alarm function and data storage function. In
the Alarm mode, the probe will audibly and visually indicate when the reading is
beyond an input set point. You can also have the alarm activate above or below
“fail” readings are required.
at a later time. The alarm settings and stored data are saved when the ground
tester is turned OFF.
Two new features unique to AEMC® Instruments are test frequency selection and
touch voltage indication.
The ability to select the test frequency provides more accurate measurements in
inductive environments.
Displaying voltage derived from current and resistance measurements provides
an extra level of safety for the user, indicating a potentially dangerous touch
condition.
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Clamp-on Ground Resistance Tester Model 6416
FEATURES
Simple and fast clamp-on operation - no leads, no auxiliary rods or spacing
requirements
Ammeter: Current measurements from 0.2 mA to 40 A.
Loop ohmmeter:
The ohmmeter function makes allowance for the presence of inductances in
the loop, making impedance measurements more accurate at low values.
The contact voltage is determined by calculating the product
of the loop impedance and leakage current. The value found is an upper bound
on the voltage between the measurement point and earth, since the
impedance taken into account is that of the whole loop.
Touch voltage display
Large multi-function, bright yellow organic light emitting diode display (OLED)
Display in Standard mode (one screen) or Advanced mode (three screens)
Clamping diameter of 1.38 in (35 mm) accommodating cables up to 1000 kcmil
Displays stored measurements on the display
Measurement hold by the HOLD and AUTO-HOLD functions
Clamp opening made easy by a trigger with a force compensation system
Auto Power OFF function
Rugged Lexan®head and body construction resists breakage
Alarm settings and stored memory information saved during shutdown
NOISE icon and buzzer notify the user to presence of dangerous voltage and
current levels
Designed to EN 61010-1, 600 V CAT IV safety standards
APPLICATIONS
Ground electrode system resistance
Bonding/continuity checks
Ground measurements on Railroad signaling systems
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Clamp-on Ground Resistance Tester Model 6416 11
DISPLAY
The Model 6416 is equipped with a 152-segment OLED (organic light-emitting
diode) display. This OLED technology results in a thinner, lighter, sharper, higher
contrast display compared to LCD displays.
Item Description
1 Indicates selection of Advanced mode.
2 In Advanced mode, this indicates when the inductive component
is negligible with respect to the resistive component.
3 Main Display:
- Measurement of the impedance or current.
- Display of the date and time (month-day and hour-minute) in
4 In Advanced mode, these symbols identify the value displayed
(resistance or impedance).
5 Data storage mode.
6 Memory recall mode.
7 Memory index four-digit digital display (0 to 9999-counts):
- Measurement sequence number of the current memory in
normal operation associated with the Recall (MR) or Storage
(MEM) indications.
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Clamp-on Ground Resistance Tester Model 6416
Item Description
8 Signal indicating potentially hazardous voltage. Blinks when the
contact voltage exceeds 50 V.
9 Alarm threshold high/low indicator (operational use or
AL Alarm threshold adjustment mode or Alarm function.
10 Alarm threshold display:
- Display of one of the alarms (1000-count display) with units.
display mode.
(A for A.M., P for P.M. or 24H) in SET-UP
(see § 4.4, menu #8).
11
resistance impedance, voltage, or current, depending on the
measurement chosen (
- A: Current measurement alarm.
- : Resistance measurement alarm.
- V: Voltage measurement alarm.
12 Unit of the central measurement display:
- V: Contact voltage measurement unit.
- : Impedance measurement unit. Symbol used for
impedances at the measurement frequency, for impedances
referred to the network frequency, or for the resistive component.
13 Unit of the top measurement display:
- mH: Loop inductance measurement unit.
- mA or A: Current measurement unit.
14 Upper display: 4000-count current measurement and 500-count
loop inductance measurement (Advanced mode).
15 Battery charge indicator:
- Not displayed: Batteries charged.
- Blinking: Batteries low. The device remains functional, but the
batteries will have to be replaced soon.
- Steady: Batteries discharged. The display indicates Lo bat. It is
parameters.
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Clamp-on Ground Resistance Tester Model 6416 13
Item Description
16 Continuous operation of the clamp (Auto Power OFF disabled).
Selection of Auto Power OFF mode is made in SET-UP (see §
4.4, menu #3).
17
cannot be made in this case. If the AUTO-HOLD mode is
activated, the HOLD icon blinks and the measurement is frozen.
Selection of AUTO-HOLD mode is made in SET-UP (see § 4.4,
menu #11).
18 Symbol indicating the presence of disturbance (current) in
the loop, which compromises the accuracy of the impedance
measurement.
19 Indicates that the main display shows the date (when the rotary
switch is set to MR or SET-UP).
20 Indicator of freezing the measurement display when the HOLD
button is pressed or while in the AUTO-HOLD mode.
21
the buzzer is inactive. Selection of the buzzer operating mode is
made in SET-UP (see § 4.4, menu #2).
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14 Clamp-on Ground Resistance Tester Model 6416
CONTROL FEATURES
Figure 2-2
Consists of two individually shielded magnetic cores
Guard:
Lever: Opens or closes the jaws
:Toggles display backlight ON/OFF
MEM: Stores measurements into memory
Crisp, clean and bright display
Selects measurement functions and instrument SET-UP
HOLD: Freezes last measured value on the display
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16 Clamp-on Ground Resistance Tester Model 6416
BUTTONS FUNCTIONS
Button Description
•
brightness of the display, making it easier to read the display
in an environment with strong background illumination.
Highlighting activated for 30 seconds.
• When the rotary switch is set to SET-UP or MR: Serves as
brightness of the display does not change when device is set
to SET-UP or MR.
MEM
•
measured value. All of the data is recorded in the Standard or
Advanced mode.
• When the rotary switch is set to SET-UP or MR: Serves as
•
Switches the display through the following three
modes:
- Display of the impedance recalculated at the selected
frequency.
- Display of the contact voltage (product Z*I).
- Display of R and L.
Enables or disables the audible alarms.
• When the rotary switch is set to SET-UP:
- Validation when browsing in the menus and values.
• When the rotary switch is set to MR (Advanced Mode):
- Switches the display through the measurement screens
and the measurement date/time.
HOLD
&
AUTO-HOLD
•
- Freezes the displayed measurement for as long as the
HOLD button is pressed. The NOISE, clamp open
( ), and alarm exceedence ( ) icons are visible,
if they were active.
AUTO-HOLD Function:
If the AUTO-HOLD mode was enabled during instrument
SET-UP (see § 4.4, menu #11), opening the clamp acts as
the identical state to the HOLD mode for as long as the clamp
freeze the measurement with one hand, when access to the
If the HOLD button is not pressed during this time, closing the
clamp automatically exits the AUTO-HOLD mode.
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Clamp-on Ground Resistance Tester Model 6416 17
PRINCIPLE OF OPERATION
Typically, a grounded distribution system can be simulated by the basic circuit
shown in Figure 3-1 or an equivalent to the diagram shown in Figure 3-2. If
voltage (V) is applied to any measured grounding electrode Rx through a
following equation:
Therefore, V/I = Rx is established. If I is detected and measured with V kept
constant, the measured grounding electrode resistance Rx can be obtained.
constant voltage oscillator. The resulting current is then sensed by a detection
commercial frequency (50/60 Hz) and high-frequency noise.
Example: If clamped around any grounding electrode in a multi-grounded
system, the measured value of the electrode under test will be the resistance
of that particular rod in series with the equivalent parallel resistance value that
the rest of the multi-grounded system represents. If an electrical system had
in
series with the equivalent parallel resistance of the other 100 electrodes or 0.2
V
I= Rx + 1
n
i=1
1
Ri
Rx » 1
n
i=1
1
Ri
where, usually
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18 Clamp-on Ground Resistance Tester Model 6416
negligible with respect to the rod under test.
Figure 3-2
I
V
Rx R1R2Rn-1 Rn
RxR1RnRn-1
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