Megger torkel 820, torkel 840, torkel 860 User Manual
TORKEL
820/840/860
User's Manual
Battery Load Units
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User's manual
TORKEL 820/840/860
Battery Load Units
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General ..................................................... 18
Preparations
.............................................. 18
Testing
...................................................... 19
Starting the test
........................................ 19
8 External current measurement ........ 20
General
..................................................... 20
Applications
............................................. 20
Setting up external current measurement
.. 21
TORKEL .................................................... 21
DC clamp-on ammeter
............................. 21
Connections
............................................. 22
Troubleshooting ........................................ 22
9 Alarm function .................................. 24
Description
............................................... 24
Resetting the alarm .................................. 24
10 Auto-limits ......................................... 26
Invoking the auto-limits function
............... 26
Activating auto-limits
............................... 26
11 TORKEL connected to a PC ............... 28
General
..................................................... 28
TORKEL Win program
............................... 28
TORKEL Win features .............................. 28
Installing TORKEL Win ............................... 29
Installation ............................................... 29
Setting up communication
....................... 29
Loading the software key
......................... 29
Changing the language used in TORKEL
... 30
Testing with TORKEL Win .......................... 30
Viewing the results ................................... 30
12 Starting and stopping from an external
device ..................................................... 32
Start/stop connector
................................. 32
Starting .................................................... 32
Stopping
.................................................. 32
13 How to obtain the desired current .. 34
General
..................................................... 34
TORKEL load capacity
................................ 34
Imax ......................................................... 34
Max power
............................................... 35
Final voltage
............................................. 35
Examples of load capacities
...................... 35
When a single TORKEL isn’t enough .......... 36
TXL Extra Loads connected to TORKEL ..... 36
Contents
1 Introduction ........................................ 6
General
....................................................... 6
TORKEL 820/840/860 ................................. 6
TXL830/850/870 (Extra Loads) ................... 6
TORKEL Win software (optional)
................. 6
2 Safety ................................................... 8
3 Menu system ..................................... 10
Main menu
............................................... 10
Results ..................................................... 10
Test battery
.............................................. 10
Auto-limits
............................................... 10
Memory
................................................... 10
Select
language ........................................ 10
Basic settings
............................................ 10
Test method
............................................. 10
4 Control panel..................................... 12
1 – Operator control ................................. 12
2 – External current measurement
............ 12
3 – Circuit breaker .................................... 13
4 – External control ................................. 13
5 – Mains ................................................. 13
6 – Connection terminals for the battery . 13
5 Conducting a test .............................. 14
Test at constant current
............................. 14
Safety precautions .................................... 14
Preparations for testing
............................ 14
Connecting the current cables to the
battery
..................................................... 14
Setting the current
................................... 15
Warning and stop limit parameters
........... 15
Starting the test
....................................... 15
Pausing the test
........................................ 15
Ending the test
......................................... 15
6 Testing at constant power / resistance
16
Constant power
........................................ 16
Configuring TORKEL for constant power .. 16
Constant resistance ................................... 16
Configuring TORKEL for constant
resistance ................................................. 16
7 Testing with a load profile ................ 18
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Calculating how many TORKELs and TXLs are
needed ..................................................... 36
TORKEL/TXL system examples
................... 37
Test conducted using a system comprising
TORKEL and TXL units
........................ 39
Hookup and settings ................................ 39
14 TXL Extra Loads ................................ 40
1 – Selector switch ................................... 40
2 – Circuit breaker
.................................... 40
3 – Connection terminals for the battery . 40
4 – Control
............................................... 40
5 – Mains
................................................. 40
Setting up the extra load ........................... 41
Testing
...................................................... 41
15
Optional accessories ......................... 42
Cables ...................................................... 42
Clamp-on DC ammeter
............................ 42
Software
.................................................. 42
Other
....................................................... 42
16 Troubleshooting ................................ 44
Messages on display ................................. 44
17 Calibration ......................................... 46
Calibration procedure
............................... 46
How to calibrate
....................................... 46
1. Calibrating zero levels ........................... 46
2. Calibrating internal current
................... 47
3. Calibrating internal and external
voltage ..................................................... 47
4. Calibrating of external current
.............. 48
Resetting TORKEL ..................................... 49
General .................................................... 49
Performing a reset
.................................... 49
18 Specifications .................................... 50
Torkel 820
................................................. 50
Torkel 840/860
.......................................... 51
TXL 830 /850 /870 .................................... 53
19 Index .................................................. 54
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1
Introduction
TXL830/850/870 (Extra
Loads)
The TXL830, TXL850 and TXL870 Extra Loads comprise resistive loads. They can be used together with
TORKEL Load Units to increase loading capability. The
TXL Extra Loads can not provide regulatation by themselves but TORKEL measures total current from the
battery and regulates the load characteristic. When
TORKEL is stopped it sends a stop signal to the TXL
Extra Load.
The three models have different maximum voltage
ratings:
TXL830 28 V
TXL850 56 V
TXL870 280 V
TORKEL Win software (optional)
The TORKEL Win program, which runs on a PC under
Windows®, builds up a voltage curve on the screen in
real time and displays the current, voltage and capacity readings. You can also use TORKEL Win to control
TORKEL during the test . The program stores the
results in a text file, and it can generate reports
General
This manual explains how to use TORKEL 820, TORKEL
840 and TORKEL 860 Battery Load Units, and it also
covers the TXL830, TXL850 and TXL870 Extra Loads.
Although performance differs from one model to
the next, all models are used in the same way. Unless
otherwise specified, what is set forth in this manual
applies to all models.
TORKEL 820/840/860
These Battery Load Units are sophisticated instruments designed mainly for capacity tests. All three
units can be programmed to test a battery bank at
constant current, constant power, or using a user-defined load profile. TORKEL can also be used for testing
battery chargers and other electrical equipment that
require resistive load testing.
The three models have different maximum voltage
ratings:
TORKEL 820 60 V DC
TORKEL 840 288 V DC
TORKEL 860 480 V DC
TORKEL has a number of functions that facilitate its
use. Examples include:
Warning and automatic stop functions for
time, discharged capacity and low battery
voltage.
9 memories where settings can be stored.
Voltage curve can be stored for later transfer
to a PC using the TORKEL Win program.
Discharging can be started/stopped from external equipment.
Testing can be carried out without disconnecting the regular load.
•
•
•
•
•
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Safety instructions
Warning
The electrical voltage and current used in battery
testing is potentially lethal.
Ensure that the AC supply is isolated and any battery under test is disconnected before attempting
any cleaning or maintenance of TORKEL.
Do not connect or disconnect any of the cables
unless the circuit breaker F1 is in the lower (OFF)
position.
Connection and disconnection procedures are extremely important. Be sure to follow the instructions
faithfully.
Do not touch conducting parts of the clamps on the
current cables or the voltage sensing cables when
they are connected to TORKEL.
Explosion risk when using Torkel and TXL (all models)
When a lead acid battery is charged or discharged
i.e. when there is a current flow through the battery
it is always a risk that the battery can explode.
For new open (vented) batteries the risk is medium
to low but in old VRLA (sealed) batteries the risk is
medium to high.
If there is a bad connection inside the battery and
there is a current flow - the connection will burn off
and there will be an arc, which will ignite the oxyhydrogen gas in the battery.
To minimize the risk for personnel injuries:
Always place Torkel/TXL as far away from the battery as possible - use long current cables and/or
remote start/stop.Never stand close to a battery
during charge/discharge.
Too high discharge current applied on a battery can
cause the battery to explode or get over-heated. Be
sure to not set too high current.
If the external current measurement is interrupted
or giving false values during the test, the current will
rise to a higher level than the set value before the
test is shut down. If the battery is too small for this
current or in a bad condition - it may explode.
2
Safety
Symbols on the
instrumentI
Caution, refer to accompanying documents.
Caution, risk of electric shock.
Hot, do not cover
Protective conductor terminal.
WEEE, Waste Electrical and Electronic
Equipment. Please utilize your local
WEEE collection facilities in the disposition of this product and otherwise
observe all applicable requirements.
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When using the external current measurement function:
1. Check that the CT is connected in the right current direction.
2 Always replace the CT internal battery before a
test.
3 Set the correct current ratio in the external current
measurement menu.
Never use the TORKEL/TXL Extra Load in an explosive environment. Never put the TORKEL/TXL Extra
Load where it can be reached by battery gas.
Improperly connected cables carrying high current
can cause fire. Make sure that the cables are not
twisted in such a way that could cause them to turn
and come loose from the connector.
Position TORKEL/TXL Extra Load where air flow is
unobstructed and where it does not come into contact with any flammable or heat-sensitive material.
Keep a free distance of 1.5 m (5 ft) to the vertical sides of TORKEL/TXL and 2.0 m (6.5 ft) above
TORKEL/TXL.
Do not place TORKEL a) near another TORKEL, a TXL
Extra Load or any other heat source or b) where the
cooling airflow can be blocked. TORKEL will overheat if there is insufficient cooling.
External current shunt may not be used above
300 V DC
Important!
Make sure that the clamp-on ammeter is properly
connected and that its battery lasts throughout
the entire test. If external current measurement
malfunctions, TORKEL might provide a higher load
current than intended.
Do not use liquid detergents or aero-sols when
cleaning TORKEL or TXL units. Use a damp cloth.
If TORKEL has been stored below freezing for an
extended period of time, you must allow 3 hours for
it to adapt to room temperature.
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Menu system
Main menu
Results
Displays voltage, capacity, current and testing period
(time) from the last test.
Test battery
Submenu used to perform a test.
Auto-limits
Submenu used to provide automatic calculation and
setting of limit values. Here, you specify the desired
voltage per cell at which a) warnings are to be issued
and b) the test is to be stopped. Examples: warning
at 1.85 V/cell and stop at 1.75 V/cell. Then, when you
begin a test, TORKEL asks you to enter the number of
cells, whereupon it calculates the voltage and sets this
voltage as the limit.
Memory
You can save and recall the settings in any of 9 memories. Moreover, you can recall the factory (standard)
settings.
Select language
Here, you select the language that will be used in the
display.
Basic settings
Here, you specify whether the current is to be measured internally within TORKEL or by means of a clampon ammeter. You can also adjust TORKEL to the mV/A
ratio that appears on the clamp-on ammeter itself.
Test method
Here you specify one of the following test methods:
constant current, constant power, constant resistance,
current profile or power profile.
When you start a profile test you will be asked for the
number of steps, the test duration (time) and the load
value for each step.
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Control panel
① Operator control
Display
Display settings during programming and measured
values during operation.
Keys
<LIMITS> key. Press to enter the LIMITS MENU
<ESC> key. Press to exit from a function without
changing any data or to go backwards in the menu
system.
Horizontal and vertical arrow keys,
. Used
to select data and to change values.
<SET LOAD> key. Press to change the load.
<ENTER> key. Press to select and confirm parameters.
<START> key. Press to start discharging.
<STOP> key. Press to stop/pause discharging.
Lamps
OPERATING
a) LED will glow steadily while TORKEL is discharging.
b) LED will flash when the current (or power) can not
be regulated to the desired value.
Vmin (V)
a) LED will glow steadily after TORKEL has shut down
because the voltage has dropped to the stop limit.
b) LED will flash when the voltage has decreased to
the warning limit.
I•t (Ah)
a) LED will glow steadily when TORKEL has shut down
because the discharged capacity has reached the stop
limit.
b) LED will flash when the discharged capacity has
exceeded the warning limit.
Time (h)
a) LED will glow steadily when TORKEL has shut down
after completing the preset time cycle
b) LED will flash when the time has exceeded the
warning limit.
② External current measurement
External current measurement
Input used to measure current in an external path by
means of a clamp-on ammeter or a current shunt.
Input impedance: 1 Mohm. Galvanically isolated.
Insulation voltage to battery current terminals: 2300 V
Insulation voltage to ground: 1350 V
③ Circuit breaker
F1
Voltage controlled circuit breaker that connects /
disconnects the loading circuits in TORKEL from the
battery.
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Note F1 will not latch in upper (ON) posi-
tion until TORKEL has issued a message
reading“Switch on F1”.
④ External control
ALARM
Output equipped with a relay contact for triggering
an external alarm device
Relay contact: 1 A / 100 VAC, 1 A / 50 VDC, 0.3 A /
250 VDC. This latter (250 V DC) is valid for resistive
load only.
Connector insulation: Voltage to ground may not
exceed 250 V
START/STOP
Input used for starting and stopping discharging from
an external device. Galvanically isolated.
TXL
Output used for control of TXL Extra Loads. Galvanically isolated.
SERIAL
Serial port used for connection to a PC or other controlling equipment.
⑤ Mains
MAINS
Connector for mains supply, equipped with ON/OFF
switch.
⑥ Connection terminals
for the battery
+
(Terminal)
Positive (+) current connection for battery being
tested.
– (Terminal)
Negative (-) current connection for battery being
tested.
Insulation voltage to ground: 2200 V
VOLTAGE SENSE
Input for sensing voltage at the battery terminals.
Impedance to the battery current terminals is
>1 Mohm.
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Conducting a test
Note Press ESC if you want to access the main
menu.
Important
Connection and disconnection procedures are extremely important. Be sure
to follow the the instructions faithfully.
Connecting the current
cables to the battery
Use the cables supplied with TORKEL or other cables
of suitable size. Follow the numbered steps that are
set forth below. Inspect each connection to make
sure it is securely fittted.
Connecting TORKEL to a battery.
Connect one end of the first cable to the negative (-) terminal on TORKEL.
Connect the other end of the first cable to the
negative (-) pole of the battery.
Connect one end of the second cable to the
positive (+) pole of the battery.
Connect the other end of the second cable to
the positive (+) terminal on TORKEL.
Tip To get a more accurate voltage read-
ing. Connect the voltage sensing cables
between the “VOLTAGE SENSE” input
on TORKEL and the battery terminals.
1]
2]
3]
4]
Test at constant
current
Safety precautions
Warning
Do not connect or disconnect any of the
cables unless the circuit breaker F1 is in
the lower (OFF) position.
Never use TORKEL/TXL Extra Load in
an explosive environment. Never put
TORKEL/TXL Extra Load in direct contact
with battery gas.
Position TORKEL/TXL Extra Load so that
the air flow is unobstructed and free from
contact with any flammable or heat-sensitive material.
Do not place TORKEL near another
TORKEL, a TXL Extra Load or any other
heat source. TORKEL will overheat if there
is insufficient cooling.
Inspect cable connections to make sure
there is no short circuit.
Preparations for testing
Connect TORKEL to the mains voltage.
Switch on TORKEL.
The following display will appear for a short time:
TORKEL 840 R01A
It will then change to:
MAIN MENU
Test battery
and then:
Connect battery
1]
2]
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Warning
Do not disconnect any of the above cables
until the test is completed and the circuit
breaker F1 is in the lower (OFF) position.
Note TORKEL automatically selects the volt-
age range when voltage is applied to the
high-current terminals.
Setting the current
Use the horizontal arrow keys ( or ) to select
the position and the vertical arrow keys ( or
) to set the value.
Set Current
0001
.0 A
Press <ENTER>.
After connecting the battery, about 30 seconds
must elapse before you can switch on the circuit
breaker F1 and start the test. TORKEL displays the
amount of time you must wait as follows:
Please wait...
25 sec
When the time shown has elapsed, the following
will appear:
Switch on F1
Press ENTER
Switch on F1 (press the lever upwards a second
time if it fails to latch immediately).
Confirm by pressing <ENTER>.
TORKEL now displays the values currently in effect:
51.6V 0.0 Ah
0.0 A 0:00:00
Tip You can change the current at any time
by pressing the <SET LOAD> key.
Warning and stop limit parameters
You can set TORKEL to issue a warning and/or to stop:
When the voltage has reached a certain level.
When a certain amount of capacity is discharged.
After a specified time.
The settings for the warning and stop levels are independent of each other.
When a limit is reached, the contacts in the ALARM
relay operate and a buzzer sounds. In addition, the
lamp associated with the parameter on the control
1]
2]
3]
4]
•
•
•
panel flashes when the warning level is reached and
starts to glow steadily if TORKEL is stopped. See also
the chapter headed” Alarm function”.
Limits set-up
Press <LIMITS>
Warning Umin
No 044.4 V
Use the horizontal arrow keys ( or ) to move
the cursor and the vertical arrow keys ( or )
to activate the warning (Yes) and to set the voltage level.
Press <ENTER>
Proceed in the same way for other parameters
you want to change.
Press <LIMITS> when you have finished setting
the parameters.
The limits can be changed at any time during a test.
Starting the test
Press <START>.
The current value (A) will be displayed and the
OPERATING lamp will light up.
Pausing the test
Press <STOP>.
Restart by pressing <START>.
Note Any TXL Extra Loads connected to
TORKEL must be restarted manually.
Ending the test
Press the <STOP> key.
Press <ESC>
End Test?
Yes No
Select ”Yes” and press <ENTER>.
1]
2]
3]
4]
5]
1]
1]
2]
1]
2]
3]
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Constant resistance
WARNING!
See the chapter "Conducting a test" for
safety precautions and how to prepare
the test
Configuring TORKEL for
constant resistance
Press <ESC> repeatedly until you see the ”MAIN
MENU”.
Select ”Test method” using the vertical arrow
keys (
or ) and press <ENTER>.
Select ”Constant R” and press <ENTER>.
Select ”Test battery” and press <ENTER>.
Set the resistance value in the same way that you
set the current value. See the chapter headed
“Conducting a test”.
1]
2]
3]
4]
5]
6
Testing at constant
power / resistance
Constant power
TORKEL can be used to conduct a discharge test at
constant power instead of constant current. All procedures are the same except that you must set TORKEL
differently before starting – you set the power instead
of the current.
Warning
See the chapter "Conducting a test" for
safety precautions and how to prepare
the test.
Important
When testing at constant power, the current will increase as the voltage decreases.
Calculate the current at the end of the
test (W / V = A). Then make sure that the
total current does not exceed 2999 A.
Also make sure that the TORKEL and TXL
units can provide the required current
load troughout the test.
Configuring TORKEL for
constant power
Calculate the current at the end of the test (divide
the power by the voltage). Then make sure that
the total current does not exceed 2999 A and
that the TORKEL and TXL units can load with the
required current throughout the test.
Press <ESC> repeatedly until you see the ”MAIN
MENU”.
Select ”Test method” using the vertical arrow
keys (
or ) and press <ENTER>.
Select ”Constant P” and press <ENTER>.
Select ”Test battery” and press <ENTER>.
Set the discharge power in the same way that
you set the current. See the chapter 5 "Conducting a test”.
1]
2]
3]
4]
5]
6]
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Testing with a load
profile
Preparations
To configure TORKEL for a profile test, proceed as
follows:
Press <ESC> repeatedly until you see the ”MAIN
MENU”.
Select ”Test method” using the vertical arrow
keys (
or ) and press <ENTER>.
Select ”PROFILE I” for a current profile (or ”PROFILE P” for a power profile) and press <ENTER>.
1]
2]
3]
General
TORKEL can be used to conduct a test that incorporates a current profile or power profile. A profile can
consist of up to 19 time intervals. The duration and
the magnitude of the load can be specified for each
interval.
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