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.
Line voltage |
Range |
Fuse |
|
|
|
|
|
110V |
AC |
99 V to 121 V |
T0 500 mA, 250V |
|
|
|
|
220V |
AC |
198 V to 242 V |
T0 250 mA, 250V |
|
|
|
|
The instrument power fuse is located in a fuse compartment below the AC input receptacle. To access the fuse, first 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
VV |
In CC mode, the DC load |
draws a constant current |
|
|
regardless of the voltage on |
|
CC, |
|
its terminals. |
|
,ITECH |
I I
ConstantCurrentcurrent
Constant Voltage (CV) mode
V |
In CV mode, the DC |
|
|
|
load will draw enough |
|
current to keep the |
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voltage at the |
|
terminals constant. |
I
Constant voltage
Constant Resistance (CR) mode
In CR mode, the DC V 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 resistance
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