Technical data

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E4350B
E4351B
26 AGILENT SOLAR ARRAY SIMULATOR: 480 W
The E4350B/E4351B simulates the output characteristics of a
satellite’s solar panels as it moves from darkness to light.
Agilent Solar Array Simulator
The Agilent one-box Solar Array Simulator (SAS) is a dc
power source that simulates the output characteristics of a
solar array. The SAS is primarily a current source with very
low output capacitance and is capable of simulating the I-V
curve of different arrays under different conditions (i.e., tem-
perature, age etc.). The I-V curve is programmable over the
IEEE-488.2 bus and is conveniently generated within the SAS.
The SAS provides three current operating modes:
1. Simulator Mode: An internal algorithm is used to approximate
a SAS I-V curve. Four input parameters: Voc (open circuit volt-
age), Isc (short circuit current), Imp and Vmp (current and volt-
age at the peak power point on the curve) are needed to
establish a curve in this mode.
2. Table Mode: For a fast and accurate I-V simulation, the SAS
provides a table mode. The I-V curve is set by a user-defined
table of points. A table can have any length up to 4000 points (a
point corresponds to a specific value of I and V). As many as 30
tables may be stored in each of the SAS built-in volatile and
non-volatile memory.
Non-volatile memory can store a maximum of 3500
points. The tables (I-V curves) are easily stored and recalled
with an IEEE-488.2 command. The table(s) stored in this
memory will be retained when the power is turned off.
Volatile memory greatly increases the flexibility by saving up
to 30,000 points. Multiple tables are easily accessed with
IEEE-488.2 command. These tables will be erased after power
is removed.
In Table Mode, current and voltage offsets can be
applied to the selected table to simulate a change in the
operating conditions of the solar array.
3. Fixed Mode: This is the default mode when the unit is
powered on. The unit has the rectangular I-V characteristics
of a standard power supply, when an output capacitor is
added in this mode.
Specifications E4350B E4351B
For Simulator and Table Modes
Max. Power 480 W 480 W
Voc, Max.* Power 65 V 130 V
Isc, Max* 8 A 4 A
For mixed mode
Max. Power 480 W 480 W
V rated* 0-60 V 0-120 V
I rated* 0-8 A 0-4 A
*Other voltage/current combinations may be configured to meet your
unique requirements.
Programming Accuracy: at 25°C + 5°C (SAS and table Mode)
Voltage: (Fixed Mode)
0.075% + 10 mV (E4350B)
0.075% + 20 mV (E4351B)
Current: (Simulator and Fixed Mode)
0.2% + 20 mA (E4350B)
0.2% + 10 mA (E4351B)
Ripple and Noise: (20 Hz to 20 MHz) with outputs ungrounded
or with either terminal grounded (Simulator and Table Mode)
Voltage: RMS: 16 mV (E4350B), 24 mV (E4351B);
P-P: 125 mV (E4350B), 195 mV (E4315B)
Current: RMS: 4 mA
Supplemental Characteristics
Load Switching Recovery Time: < 5
␮
s when switched from short
circuit to variable load, to within 1.5A of an operating point
on the I-V curve.
Remote Sensing: Up to 2 V+ (Voc-Vmp). Add 3 mV to the voltage
load regulation specification for each 1 volt change in the
positive output lead due to load current change.
Analog Programming of Output Current
Input Signal: 0 to -4.0V
Input Impedance: 20k Ohms nominal
Shunt Regulation: Switching frequency up to 50 kHz
Series Regulation: Switching frequency up to 50 kHz
OVP and OCP: Overvoltage and overcurrent protection
triggers in ≤100 us
Capacitive Load: In fixed mode, the maximum load capacitance
(without causing instability) is 2000uF. In simulator and table
mode, it is unconditionally stable at all capacitive loads.
Inductive Load: The maximum load inductance
(without causing instability) is 200µH
Regulatory Compliance: Listed to UL3101, certified to CSA 22.2
No. 1010.1, complies with EN 61010-1.
RFI Suppression: Complies with CISPR-11, Group 1, Class A
Size: 425.5 mm W x 132.6 mm H x 497.8mm d
(16.75 in x 5.25 in x 19.6 in) See page 55 for more detail
Weight: Net, 25 kg (54 lb); shipping, 28 kg (61 lb)
Warranty: Three years
Ordering Information
Opt 0BN Service Manual, Extra Programming
Guide and Operating Guide
Opt 100 87 to 106 Vac, 47 to 63 Hz
Opt 220 191 to 233 Vac, 47 to 63 Hz
Opt 240
209 to 250 Vac, 47 to 63 Hz
Opt 908 Rackmount Kit, p/n 5062-3977
Opt 909 Rackmount Kit with Handles,
p/n 5063-9221
ac Input: 104 to 127 Vac
Voltage 100 Vac 120 Vac 220 Vac 240 Vac
Current 12 A 10 A 5.7 A 5.3 A
Accessories
p/n 1252-3698
7-pin Analog Plug
p/n 1252-1488 4-pin Digital Plug
p/n 5080-2148 Serial Link Cable
2 m (6.6 ft)
p/n 1494-0059 Accessory Slide Kit
Simulators can be ordered as individual modules or as fully customized system.
I
ac
I
mp
P
max
I
V
V
mp
V
oo
I
rated
P
max
I
V
V
rated
Simulator Mode
Fixed Mode
A
B
C
D
E
System
dc Power
Supplies
E4350B, E4351B