| EL-R MODEL RANGE |
| Voltage/Current Levels |
| Models |
EL301R |
EL183R |
EL302R |
EL561R |
EL155R |
EL303R |
EL302RD |
EL302RT |
| |
0 to >30V; 0 to >1A |
0 to >18V; 0 to >3.3A |
0 to >30V; 0 to >2A |
0 to >56V; 0 to >1.1A |
0 to >15V; 0 to >5A |
0 to >30V; 0 to >3A |
2 x (0 to >30V; 0 to >2A) |
2 x (0 to >30V; 0 to >2A)
plus 1.5 to 5.0V @ 2A |
| Nominal Power |
30W |
60W |
60W |
60W |
75W |
90W |
120W |
130W |
| OUTPUT SPECIFICATIONS |
| Output Setting & Control |
| Voltage Setting: |
By coarse and fine controls. |
| Current Setting: |
By coarse and fine controls. |
| Output Mode: |
Constant voltage or constant current with automatic cross-over.
CC indicator lit in constant current mode |
| Output Switch: |
Electronic, non isolating. Preset voltage and current limit displayed
when Output is off. On state indicated by LED. |
| 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: |
<50µs 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 <5mVrms, <15mVpk-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 SPECIFICATIONS |
| 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. |
| Cooling: |
Silent fan-less convection cooling. |
| Safety & EMC |
| Safety: |
Complies with EN61010-1 |
| EMC: |
Complies with EN61326 |
| Physical |
| Size: |
Single output models - 140x160x295 mm (WxHxD). Dual and triple output models - 260x160x295 mm (WxHxD). |
| Weight: |
EL301R - 3.4kg; EL302R, EL302P, EL183R, EL561R - 4.4kg:
EL155R, EL303R - 5.0kg; EL302RD, EL302RT - 7.5kg. |
| Accuracy specifications apply for the temperature range 18°C to 28°C after 1 hour warm-up. Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to alter specifications without prior notice. |