BK Precision 8540 User Manual
INSTRUCTION
MANUAL
Model 8540
Model 8540
60V/30A/150W DC Electronic Load
WARNING
Safety Regulations
To avoid electrical shock, do not open the cabinet. Refer servicing to
qualified personnel only.
To avoid injuries, always disconnect power, discharge circuits, and
remove external voltage sources before touching components.
KEEP AWAY FROM LIVE CIRCUITS.
We cannot accept responsibility for any direct or indirect financial
damage or loss of profit that might occur when using the electronic load.
The instrument chassis and cover must be connected to an electrical
ground.
Certification
We certify that this product met its published specifications at time of
shipment from the factory.
Notice
The information contained in this document is subject to change without
notice. Please consult the B&K Precision website www.bkprecision.com
for the latest version.
Compliance Statements
Disposal of Old Electrical & Electronic Equipment (Applicable in the
European Union and other European countries with separate collection
systems)
This product is subject to Directive 2002/96/EC of the
European Parliament and the Council of the European
Union on waste electrical and electronic equipment (WEEE) ,
and in jurisdictions adopting that Directive, is marked as
being put on the market after August 13, 2005, and should
not be disposed of as unsorted municipal waste. Please
utilize your local WEEE collection facilities in the
disposition of this product and otherwise observe all
applicable requirements.
Safety Symbols
Connect it to safety earth ground using the wire recommended in
the user’s manual.
High voltage danger
The symbol on an instrument indicates that the user should refer
to the operating instructions located in the manual.
Check out
Unpacking the instrument
This instrument was carefully inspected before shipment. Upon receipt,
inspect the instrument for damage that might have occurred in transit. If
any sign of damage is found, notify your B&K Precision distributor.
Check the list of supplied items
Verify that you have received the following items with your power
supply. If anything is missing, contact your authorized B&K Precision
distributor.
- Power cord
- Instruction manual
Power Requirements
The 8540 can operate on 110V AC or 220V AC. Before connecting the
power cord to an AC outlet, make sure the voltage selector in the rear is
set to the correct line voltage. If necessary, replace fuses according to
the table below.
FuseRangeLine voltage
T0 500 mA, 250V99 V to 121 V110V AC
T0 250 mA, 250V198 V to 242 V220V AC
The instrument power fuse is located in a fuse compartment below the
AC input receptacle. To access the fuse, fi rs t disconnect the power
cord and then remove the fuse cartridge.
Power-on procedure
Turn on the instrument by pressing the main power switch on the front
panel of the unit. The instrument will automatically revert to the last
setting before the power was turned off.
Note
The 9 pin D-sub connector in the rear is for factory use only!
This instrument does not offer a remote control interface.
About the 8540
The B&K Precision 8540 DC electronic load (60V/30A/150W)
can sink DC current in constant current, constant voltage, and
constant resistance modes. Measured values have 10 mV and 1
mA resolution. Shorts can be simulated. Storage is provided for up
to 100 groups, with 4 instrument setups per group. The instrument
is easy to use and will find many uses for testing DC power supplies,
batteries, and DC to DC converters.
Constant Current (CC) mode
In CC mode, the DC load
V
V
draws a constant current
regardless of the voltage on
CC時,
its terminals.
為幾伏特
,ITECH
來吸取電流
I
ConstantCurrent
Constant current
Constant Voltage (CV) mode
V
Constant voltage
Constant Resistance (CR) mode
V
I
In CV mode, the DC
load will draw enough
current to keep the
voltage at the
terminals constant.
II
I
In CR mode, the DC
load will sink a current
linearly proportional to
the voltage at the
terminals.
Features
Full digital control
1mV /1mA measurement resolution
Compact size
Bright, readable LED display
Operating modes: CC/CV/CR
Input on/off control
High reliability due to OCP/OVP (over
current, over voltage) protection
Storage for 100 groups, 4 setups
each
Easy operation
I
Constant
Constant resistance
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