1 - General Information
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G
H
J K
A
B C D E F
+ and - Power bus connectors
(- bus bar is connected to chassis ground) Calibration status LEDs Configuration switches
Transfer Calibration switch Digital I/O connectors LAN connection
G H
J
K
AC line connection (a universal AC input for line voltages from 87 Vac to 250 Vac, 50/60 Hz.) Auxiliary output connection
Calibration port
Figure 1-3. Agilent E4370A/E4374A MCCD Rear Panel Connections
Agilent E4371A Powerbus Load
For the discharging cycle, an Agilent E4371A Powerbus Load is required to dissipate excess power from discharging cells. The load operates in constant voltage mode only and sequentially switches internal resistors on and off to regulate the voltage on the power bus around a midpoint of 26.75 volts. The number of load units required depends on the number of Agilent MCCD mainframes in your system. Each Agilent E4371A Powerbus Load is capable of the full power from two
The Agilent E4371A Powerbus Load has a + and a − power bus connector on its rear panel. There is also a ground connection. To meet safety requirements, connect the ground terminal of the Agilent Powerbus load to the ground terminal of the external dc source. The load receives its operating power from the power bus. If the dc voltage on the power bus drops below 23.8 volts, or if there is no power available on the power bus, the load will not operate. Note that the load is not programmable. It is set at the factory for the correct operating voltage and does not require calibration.
The On/Off switch on the load simply connects or disconnects the load from the power bus. Note that the internal fans draw approximately 1.5 amperes of current from the power bus.
CAUTION: When discharging its maximum rated power, the Agilent E4371A Powerbus Load becomes hot to the touch.
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