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FAST SLEW RATE ELECTRONIC LOADS |
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ELL-355 Fast Slew Rate Low Voltage Electronic Load |
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ELL-355 Fast Slew
Rate, Low Voltage Electronic Load. Voltage 30V, Current 135A,
The ELL-355 is well adapted to R&D application for power supplies
and power devices having faster operational speed, lower voltage and
large output current.
Slew rate of up to 50A/uS is realized by reducing the internal
parasitic impedance.
Excellent current waveforms having little overshoot and falling
edges are independently set from the front panel as well as program.
Constant Current (CC), Constant Resistance (CR), Constant Power
(CP), External Control, Dynamic Sequence, Short and Current Limit
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Loading
power can be expanded by parallel operation (Booster function).
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Expanded
Operation Range by Peak Power and Low Voltage Operation mode.
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Adjustable
fast slew rate operation up to 50A/uS.
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High
Current of 135A max.
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Sequence
mode up to 1024 steps
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Current
Monitor and TRIG OUT as standard
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Standard
GPIB & USB interfaces
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Memory
functions (Measurement range and
setting conditions)
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Dynamic
mode : Up to 16 combinations of any current & Time can be set.
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Ripple &
Noise measurement (Factory option)
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Peak Power
Newly invented "Extreme Power" technology (patent pending) allows
ELL-355 to operate at much higher power for the duration specified
since this technology manages Peak Power and Average Power.
This unique feature is best suite to such as Over Current Testing of
DC Power Supplies at higher
current rate for short duration.
Low Voltage Operation.
There is no operating limitation by Loading Voltage since ELL-354
sinks load current as far as voltage difference exists.
The ELL-355 is equipped with various features suitable for
evaluation and inspection applications. External control mode (0 -
10V) can control load current externally, Current monitor for load
current monitoring (not isolated), GPIB as well as USB interface.
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| SPECIFICATION |
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Load Section
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Max rating |
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Current |
135A |
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Voltage |
30V |
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internal min resistance
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3m ohm |
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Min operating voltage(*6)
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0.4V(135A) / 0.2V(67.5A) /
0.1V(33.75A) |
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Peak power(*5) |
4000W (20us or less）
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430W（20s or less） |
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Rated power |
350W |
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CC mode |
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Current range |
15A |
135A |
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Setting range |
0 - 15A |
0 - 135A |
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Nominal resolution(*1)
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1mA |
10mA |
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Accuracy |
+/- 0.2% of stg. +/- 15mA
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+/- 0.2% of stg. +/- 60mA
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CR mode |
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Voltage range |
4V |
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Current range |
15A |
135A |
Current range
(Setting range) |
0.05 - 500 ohm |
5m - 50 ohm |
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Nominal resolution(*1)
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2ms |
20ms |
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Accuracy(*2) |
+/- 0.5% of Conv. Curr. +/- 0.2%
of f.s. |
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Voltage range |
30V |
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Current range |
15A |
135A |
Current range
(Setting range) |
0.15 - 1500 ohm |
0.015 - 150 ohm |
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Nominal resolution(*1)
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666us |
6.66ms |
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Accuracy(*2) |
+/- 0.5% of Conv. Curr. +/- 0.2%
of f.s. |
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CV mode |
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Voltage range |
4V |
30V |
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Setting range |
0 - 4V |
0 - 30V |
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Nominal resolution(*1)
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0.5mV |
5mV |
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Accuracy |
+/- 0.2% of stg. +/- 0.2% of f.s.
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Response time |
Fast/Slow (300us/10ms)
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CP mode |
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Current range |
15A |
135A |
Power range
(Setting range) |
0 - 40W |
0 - 350W |
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Nominal resolution(*1)
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5mW |
25mW |
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Accuracy |
+/- 2.5% of stg. +/- 1% of f.s.
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External control mode
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Current range |
15A |
135A |
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Setting range |
0 - 15A |
0 - 135A |
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Nominal resolution(*1)
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2mA |
20mA |
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Accuracy(*4) |
+/- 0.2% of stg. +/- 0.5% of f.s.
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Control voltage |
0 - 10V |
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Dynamic mode |
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Dynamic mode |
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Current range |
15A |
135A |
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Control method |
Switching |
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Loading mode |
CC mode |
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Setting Period |
2us - 100ms / 200ms / 500ms /
1.0s |
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Period resolution |
1us / 5us / 10us / 50us
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Operating mode |
Continuous, Single |
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Slew rate |
0.05 - 5A/us |
0.5 - 50A/us |
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Min load response time(*3)
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500ns |
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Sequence mode |
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Loading mode |
CC / CR / CV / CP mode
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Max steps |
1024 |
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Step duration |
1ms - 10min |
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Step duration resolution
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1ms(1ms - 100ms) / 100ms(100ms -
10min) |
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Short mode |
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Short current (MAX) |
135A |
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Current limit setting
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Current range |
15A |
135A |
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Setting range |
0.1 - 15A |
1 - 135A |
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Nominal resolution(*1)
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100mA |
1A |
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Parallel operation
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Master-Slave operation. One
master unit can control up to 4 units of slaves of same
voltage rating. For example: If the master unit is ELA-305
then ELA-155, ELA-305 or ELA-1005 may be connected as slave
unit. |
*1 : Nominal resolution:
Approximated resolution of the range.
*2 : Conv.Curr: Ideal current value being calculated by [input / set
R]
*3 : Min load response time: Minimum time required by the load when
setting slew rate.
*4 : Rin: ELA-155 : 100kohm(typ) ELB-155 : 200kohm(typ) ELC-155 :
1500kohm(typ)
*5 : External control setting accuracy: Setting accuracy is defined
when external control
voltage of 10V is fed.
*6 Setting accuracy in CR mode is valid when applied 10% or more
voltage of the voltage range.
*7 : It may vary in accordance to the internal temperature.
*8 : Minimum operating voltage vary according to the current value.
*9 : At rear loading terminals.
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Measuring Section
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DC Voltage |
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Range |
4.0000V |
30.000V |
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Resolution |
0.1mV |
1.0mV |
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Accuracy(*1) |
+/- 0.05% of rdg. +/- 0.05% of
f.s. |
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Measuring time(*2) |
Approx. 100ms |
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DC current |
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Range(*3) |
15.0000A |
135.000A |
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Resolution |
0.1mA |
1mA |
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Accuracy(*1) |
+/- 0.2% of rdg. +/- 0.2% of f.s.
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Power |
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Measuring method(*4)
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By calculation [Voltage X
Current] |
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Measuring time(*2) |
Approx. 200ms |
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General
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General |
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Loading terminals |
On front panel and rear panel
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Rated power requirement
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AC100 - 240V+/- 10% 50/60Hz
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Power consumption |
45VA or less (when in AC100V)
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Operating temperature
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5 - 40C |
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Cooling system |
Forced cooling fan |
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Dimensions |
215(W) X 128.6(H) X 420(D)
excluding projected part |
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Weight |
Approx. 10Kg |
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Interface |
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GPIB |
Conforming to IEEE488.1
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USB |
Conforming to USB1.1
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External control voltage
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0 - 10V |
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Protection, Alarm
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Over current protection
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Protect load section by limiting
the current |
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Over power protection
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Protect load section by limiting
the power |
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Over voltage alarm |
Generate alarm when over voltage
is applied |
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Temperature protector
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Generate alarm and cut off the
output when overheated |
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Reverse connection alarm
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Generate alarm when reverse
voltage is applied |
* Noted that the alarm
function does not protect the instrument.
Remove the cause of alarm to protect the instrument.
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TRIG OUT |
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Output(*1)
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Photo coupler output
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Output voltage |
CC1 |
+5V (Typ) |
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CC2 - CC16 |
0V (Typ) |
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CURRENT MONITOR |
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Output(*2)
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1V / 135A f.s. |
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Output resistance |
50 ohm |
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Accuracy(*3)
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+/- 1% of Conv.Volt. +/- 1% of
f.s. |
*1 TRIG OUT: Isolated
*2 CURRENT MONITOR: Not isolated
*3 Full scale of the current monitor and rated current are different
in current range High, Mid and Low.
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