Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
Section 1: Introduction
077114601 / March 2019
1-7
General ratings
The general ratings and connections for the 2281S are listed in the following table.
Category
Specification
Supply voltage range
100 V, 120 V, 220 V, 240 V; each range capable of 10% tolerance, 50 Hz or
60 Hz
Selectable by the line-voltage selector switch on the rear panel
Output connections
(on page 2-61).
Environmental conditions
For indoor use only
Altitude:
Maximum 2000 meters (6562 feet) above sea level
Operating:
0 °C to 40 °C, full accuracy to 80% relative humidity at up to 35 °C,
noncondensing
Storage:
-20 °C to 70 °C, 5% to 95% relative humidity at up to 40 °C and 5% to
60% relative humidity above 40 °C at up to 70 °C
Pollution degree:
2
Line fuse characteristics are shown in the following table.
Model
100 VAC/120 VAC source
220 VAC/240 VAC source
2281S-20-6
250 V, 5 A, time delay
250 V, 2.5 A, time delay
Terminology in this manual
Term
Explanation
ESR
Equivalent series resistance
V
OC
Open-circuit voltage
Vt
Terminal voltage
Amp-Hour (A-H)
Unit for battery capacity
SOC
State of charge
Battery model
A profile of a battery that contains the information for Voc and ESR in different
states of charge
V-Full
The voltage of the battery when it is fully charged
V-Empty
The voltage of the battery when it is fully discharged
Dynamic
During the dynamic battery simulation, the open voltage and SOC change with
the charging and discharging
Static
During the static battery simulation, the open voltage and SOC stay the same
