Aim TTi LD400 Instructions page 3

Accuracy specifications apply for 18°C – 28ºC, using the rear panel terminals, at 50W load power
(in normal 400W mode), after 30 minutes operation at the set conditions; regulation specifies
variation at other powers. Setting accuracies apply with slew rate at the 'Default' setting.
Superscript references are to footnotes on page 5, which provide further clarification.
INPUT
Maximum Input Ratings
Current:
Voltage:
Power:
(1)
short term mode:
Minimum Operating Voltage: <2V at 80A; typically equivalent to 25mΩ above 100mV (at 4A).
Off State Leakage:
Reverse Polarity:
Isolation Voltage:
Input Terminals
Rear Panel Input:
Front Panel Input:
External Voltage Sense
Connection:
Input Impedance:
Max. Sense Voltage Offset:
OPERATING MODES
Constant Current Mode (CC)
Current Ranges:
Setting Accuracy:
Regulation:
Temperature Coefficient:
(2)
Slew Rate Ranges:
(3)
Minimum transition time:
Constant Power Mode (CP)
Power Range:
Setting Accuracy:
Regulation:
Temperature Coefficient:
(2)
Slew Rate Ranges:
(3)
Minimum transition time:
2
80 Amps max. through the rear panel terminals.
30 Amps max. through the front panel terminals.
80 Volts max. while conducting current.
Surge suppressors start to conduct at 120V (nominal),
Max. non-repetitive surge energy: 80 Joules.
continuous: 400 Watts max. up to 28ºC, derating to 360 watts at 40ºC.
600 Watts max. up to 28ºC, for up to 60 seconds on-time, with off-
time at least double the on-time.
<10 mA (including voltage sense circuit input resistance).
Diode will conduct; 80 Amps max.
± 300Vdc max, either load input to chassis ground.
Safety terminals accepting 5mm diameter wire, or 8mm spades, at
80 Amps max. or 4mm plugs at 30 Amps max.
Safety terminals accepting 4mm diameter wire, 4mm plugs or 6·5mm
spades. 30 Amps max.
Terminal block on rear panel. Sense selection by slide switch.
680kΩ each input to load negative.
6V (allowance for backing-off supply for zero volt operation).
0 to 8 A (1 mA resolution) and 0 to 80 A (10 mA resolution).
± 0·2% ± 30 mA.
< 30 mA for 90% load power change (V > 2 Volts).
< (±0·02% ± 5 mA) per ºC.
8 A range:
80 A range:
50 µs.
0 to 400 (or 600) Watts.
± 0·5% ± 2 W ± 30 mA.
< 2% over 5 V to 75 V source voltage change (using remote sense).
< (± 0·1% ± 5 mA) per ºC.
<40 W per s to >6000 W per ms.
150 µs.
<2·5 Amp per s to >250 Amp per ms.
<25 Amp per s to >2500 Amp per ms.
Specification