Switchable remote sense terminals for perfect regulation at the load
Silent fan-free cooling
DC output switch enables voltage/current setup without the load connected
Safety terminals accept fixed shroud 4mm plugs plus forks and wires
EL302RT (triple) has auxiliary output of 1.5V to 5V at 2A
TECHNICAL SPECIFICATIONS
OUTPUT
Voltage/Current Ranges
EL301R
0 to >30V; 0 to >1A (30W nominal power)
EL183R
0 to >18V; 0 to >3.3A (60W nominal power)
EL302R
0 to >30V; 0 to >2A (60W nominal power)
EL561R
0 to >56V; 0 to >1.1A (60W nominal power)
EL155R
0 to >15V; 0 to >5A (75W nominal power)
EL303R
0 to >30V; 0 to >3A (90W nominal power)
EL302RD
2 x (0 to >30V; 0 to >2A) (120W nominal power)
EL302RT
2 x (0 to >30V; 0 to >2A) plus 1.5 to 5.0V @ 2A (130W nominal power)
Output Setting & Control
Voltage Setting
By coarse and fine controls.
Current Setting
By single logarithmic control
Output Mode
Constant voltage or constant current with automatic cross-over. CC indicator in constant current mode.
Output Switch
Electronic, non isolating. Preset voltage and current limit displayed when Output off.
Output Performance
Ripple & Noise
Typically <1mV rms, (CV mode, 20MHz bandwidth).
Load Regulation
<0.01% of maximum output for a 90% load change (using remote sense)
Line Regulation
<0.01% of maximum output for 10% line change
Transient Response
: <50us to within 50mV of setting for a 5% to 95% load change
Temp. Coefficient (Voltage)
typically <100ppm/°C
Output Protection
Output Protection
Output will withstand forward
voltages of up to 20V above rated output voltage.
Reverse protection by diode clamp for currents to 3A.
Output Connections
Output Terminals
Universal 4mm safety binding posts on 19mm (0.75") spacing.
Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs,
fork terminals and bare wires.
Remote Sense
Sense Selection
Voltage sensing is selected as Local or Remote by front panel switch
Sense Terminals
Sprung loaded screw-less terminals
METER SPECIFICATIONS
Display Type
Dual 4-digit meters, 14mm (0.56") LED
Voltage Meter
Resolution
10mV
Accuracy
0.3% of reading +/- 3 digits
Current Meter
Resolution
1mA
Accuracy
0.5% of reading +/- 3 digits
AUXILIARY OUTPUT (EL302RT only)
Voltage
Variable <1.5V to >5V by front panel control
Meter accuracy
0.3% +/- 4 digits
Current limit
2A minimum
Load regulation
<3% for 90% load change
Line regulation
<0.2% for 10% line voltage change
Ripple & Noise
Typically <5mV rms, <15mV pk-pk (20MHz bandwidth)
Output Protection
Output will withstand up to 7V forward voltage.
Diode clamp reverse protection for currents up to 3A.
Output Terminals
Universal 4mm safety binding posts on 19mm (0.75") spacing
Status Indication
UNREG lamp
GENERAL
Input
AC Input
230V AC or 115V AC +/- 10%, 50/60Hz. Installation Category II
VA Ratings:
EL301R
85 VA
EL302R, EL302P, EL183R, EL561R
160VA
EL155R, EL303R
250VA
EL302RD, EL302RT
320VA
Temperature & Environmental
Operating Range
+5°C to +40°C, 20% to 80% RH
Storage Range
-40°C to + 70°C
Environmental
Indoor use at altitudes up to 2000m, Pollution Degree 2
expands the tour into its own window (only visible when embedded in another page.)