Atec TORKEL-820 User Manual
TORKEL 820
Battery Load Unit
TORKEL 820
Battery Load Unit
▪▪
Batteries can be tested “in service”
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Unit adjusts to include load currents in the
test parameters
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User adjustable alarm and shutdown
points to avoid excessive discharge
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Easily expandable for larger battery banks
using TXL extra load units
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View test parameters/results “real time”
as testing progresses using TORKEL WIN
software
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Easily save results to a PC for analysis,
report generation and storage
Description
During a power outage, crucial telecommunication and radio equipment must be kept operating by batteries. However, the capacity of
such batteries can drop significantly for a number of reasons before
their calculated life expectancy is reached. Battery capacity should
thus be checked to prevent expensive downtime in the event of a
power failure.
The most reliable way to determine battery capacity is to conduct
a discharge test. The TORKEL™820 features a unique design that
combines efficiency with portability. Using TORKEL 820 you can
discharge 24 and 48 V batteries at a current of 270 A, and 12V
batteries at 135 A. Moreover, two or more TORKEL 820 units and/
or extra load units, TXL, can be linked together if you need higher
current. Discharging proceeds at constant current, constant power
or constant resistance, or in accordance with a pre-selected load
profile.
The TORKEL 820 issues a warning and/or shuts down the test
automatically when a) the voltage has dropped to a certain level,
b) discharging has continued through a certain time interval or c) a
certain amount of capacity has been dissipated.
Application example
Testing can be carried out without disconnecting the battery from
the equipment it serves. Via a DC clamp-on ammeter, TORKEL820
measures total battery current while regulating it at a constant level.
The TORKEL 820 is connected to battery, the current and the voltage alarm level are set. After starting the discharge TORKEL820
keeps the current constant at the preset level. When the voltage
drops to a level slightly above the final voltage, TORKEL 820 issues
an alarm. The total voltage curve and the readings taken at the
end of the test are stored in TORKEL 820. Later, using the TORKEL
Win program, you can transfer these readings to your computer for
storage, printout or export. If your PC is connected to TORKEL 820
during the test, TORKEL Win builds up a voltage curve on the screen
in real time and displays the current, voltage and capacity readings.
You can also control the test using TORKEL Win.
TORKEL 820
Battery Load Unit
Features and benefits
1. Display
2. External measurement input used to measure current in an ex-
ternal path by means of a clamp-on ammeter or a current
shunt.
3. Keys for operation and settings.
4. Alarm output equipped with a relay contact for triggering an
external alarm device.
5. Start/Stop input used for starting and stopping discharging
from an external device. Galvanically isolated.
6. Indicating lamps. Operating, Stop/Limit
7. TXL output used for control of TXL Extra Loads. Galvanically iso-
lated.
8. Serial port used for connection to a PC or other controlling
equipment.
9. Voltage controlled circuit breaker that connects / disconnects
the loading circuits in TORKEL from the battery.
10. Positive current connection for battery being tested.
11. Input for sensing voltage at the battery terminals.
12. Negative current connection for battery being tested.
13. Mains connector, equipped with ON/OFF switch.
31 42 5 6 7 8
Application examples with TORKEL/
TXL systems
TORKEL and TXL can be combined into systems to match up for
different battery capacities. These resistive extra loads do not perform any regulating functions. They are designed for use together
with TORKEL Battery Load Units. Their purpose is to provide higher
load currents for use in constant current or constant power tests.
Together, TORKEL and the TXL Extra Loads form a system that can
discharge batteries with currents of up to several kA. TXL Extra
Loads are connected directly to the battery, and TORKEL measures
the total current using a clamp-on ammeter.
TXL Extra Loads are shut down automatically when TORKEL is
stopped.
TORKEL / TXL - systems examples
Max. constant current
(A)
TORKEL 820 + TXL830, 12 V battery (6 cells)
234 1 1
571 1 4
918 2 6
TORKEL 820 + TXL830, 24 V battery (12 cells)
495 1 1
1170 1 4
1890 2 6
TORKEL 820 + TXL850, 48 V battery (24 cells)
499 1 1
118 9 1 4
1918 2 6
1) Discharge from 2.15 V to 1.8 V per cell
Number of TORKELunits
1)
Number of
TXL-units
1)
1)
TORKEL and the extra load TXL
1211109
13
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