| Output |
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| Type |
Bipolar, 4-quadrant, DC current source |
| Current generation |
Fully linear regulation with digital setting and analog control |
| Current range |
±70 A |
Compliance
voltage (DC) |
±35 V nominal |
| Power |
2450 W nominal |
| Load resistance range |
0.4 W to 0.6 W |
| Load inductance range |
0 to 1 H |
| Nominal load |
0.5 W, 0.5 H |
| Current ripple |
5 mA RMS (0.007%) at 70 A into nominal load |
| Current ripple frequency |
Dominated by the line frequency and its harmonics |
| Temperature coefficient |
±15 ppm of full scale/°C |
| Line regulation |
±60 ppm of full scale/10% line change |
| Stability (1 h) |
1 mA/h (after warm-up) |
| Stability (24 h) |
5 mA/24 h (typical, dominated by temp. coefficient and line regulation) |
| Isolation |
Differential output is optically isolated from chassis to prevent ground loops |
| Slew rate |
50 A/s into nominal load , 650 A/s minimum into a resistive load |
| Compliance voltage (AC) |
±43 V nominal |
| Setting time |
<1 s for 10% step to within 1 mA of output into nominal load |
| Modulation response |
≤0.17 Hz at ±70 A sine wave into nominal load, <0.02% THD; ≤10 Hz at ±10 A sine wave into nominal load, <0.10% THD |
| Attenuation |
-0.5 dB at 10 Hz |
| Protection |
Short circuit, line loss, low line voltage, high line voltage, output over voltage, output over current, and over temperature |
| Connector |
Two lugs with 6.4 mm (0.25 in) holes for M6 or 0.25 in bolts |
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| Output Programming |
| Internal current setting |
| Resolution |
0.1 mA (20-bit) |
| Settling time |
600 ms for 1% step to within 1 mA (of internal setting) |
| Accuracy |
±10 mA ±0.05% of setting |
| Operation |
Keypad, computer interface |
| Protection |
Programmable current setting limit |
| Internal current ramp |
| Ramp rate |
0.1 mA/s to 99.999 A/s (complaince limited) |
| Update rate |
23.7 increments/s |
| Ramp segments |
5 |
| Operation |
Keypad, computer interface |
| Protection |
Programmable ramp rate limit |
| External current programming |
| Sensitivity |
10 V/70 A |
| Resolution |
Analog |
| Accuracy |
±10 mA ±1% of setting |
| Input resistance |
20 kW |
| Operation |
Voltage program through rear panel, can be summed with internal current setting |
| Limits |
Internally clamped at ±10.1 V and bandwidth limited at 40 Hz to protect output |
| Connector |
Shared 15-pin D-sub |
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| Readings |
| Output current |
| Resolution |
0.1 mA |
| Accuracy |
±5 mA ±0.05% of reading |
| Update rate |
2.5 rdg/s display, 10 rdgs/s interface |
| Output voltage (at supply terminals) |
| Resolution |
1 mV |
| Accuracy |
±5 mV ±0.05% of rdg |
| Update rate |
2.5 rdg/s display, 5 rdg/s interface |
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| Front Panel |
| Display type |
8-line by 40-character, graphic vacuum fluorescent module |
| Display readings |
Output current, output voltage, and internal water temperature |
| Display settings |
Output current and ramp rate |
| Display annuciators |
Status and errors |
| LED annuciators |
Fault, Compliance, Power Limit, Ramping, Remote |
| Audible annuciator |
Errors and faults |
| Keypad type |
26 full-travel keys |
| Keypad functions |
Direct access to common operations, menu driven setup |
| Power |
White flush ON and black extended OFF push buttons |
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| Interface |
| IEEE-488.2 interface |
| Features |
SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0, E1 |
| Reading rate |
To 10 rdg/s |
| Software support |
National Instruments LabVIEW™ driver
(consult Lake Shore for availability) |
| Serial interface |
| Electrical format |
RS-232C |
| Baud rates |
9600, 19200, 38400, 57600 |
| Reading rate |
To 10 rdg/s |
| Connector |
9-pin D-sub (DTE) |
| Output current monitor |
| Sensitivity |
7 V = 10 A |
| Accuracy |
±1% of full scale |
| Noise |
1 mV RMS |
| Source impedence |
20 W |
| Connector |
Shared 15-pin D-sub |
| Output voltage monitor |
| Sensitivity |
3.5 V = 35 V |
| Accuracy |
1% of full scale |
| Noise |
1 mV RMS |
| Source impedence |
20 W |
| Connector |
Shared 15-pin D-sub |
| Power supply cooling water |
| Remote enable input |
TTL low or contact closure to enable output; jumper required if unused |
| Valve power output |
24 VAC at 1 A maximum, automatic or manual control |
| Connector |
Shared 4-pin detachable terminal block |
| Flow switch and water valve optional |
| Magnet cooling water |
| Remote enable input |
TTL low or contact closure to enable output; jumper required if unused |
| Valve power output |
24 VAC at 1 A maximum, automatic or manual control |
| Connector |
Shared 4-pin detachable terminal block |
| Flow switch and water valve optional |
| Auxiliary |
| Emergency stop |
Requires 1 A, 24 VAC normally closed contact closure to enable power-up; jumper required if unused |
| Fault output |
Relay with normally open or normally closed contact, 30 VDC at 1 A |
| Remote enable input |
TTL low or contact closure to enable output; jumper required if unused |
| Connector |
Shared 8-pin detachable terminal block |
| Emergency stop and inhibit switches not included |
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| General |
| Input power |
| Power |
5500 VA max |
| Voltage & current |
204/208 VAC ±10%, 13 A/phase; 220/230 VAC ±10%, 12 A/phase; 380 VAC ±10%, 7 A/phase; 400/415 VAC ±10%, 6.5 A/phase |
| Protection |
3-phase thermal relay with adjustable current setting. Two class CC ¼ A fuses. Over-voltage lockout circuit. |
| Frequency |
50 or 60 Hz |
| Configuration |
3-phase delta |
| Connector |
4-pin terminal block |
| Line voltage must be specified at time of order but is field reconfigurable; cable from power supply to facility power not included |
| Cooling water |
| Flow rate |
5.7 L (1.5 gal) per min minimum |
| Pressure range |
34 kPa (5 PSI) to 552 kPa (80 PSI) |
| Pressure drop |
10 kPa (1.5 PSI) at 5.7 L (1.5 gal) per min minimum for power supply only |
| Temperature |
15 °C to 30 °C (non condensing) |
| Connection |
Two 10 mm (0.375 in) hose barbs |
| CAUTION: Internal condensation can cause damage to the power supply |
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| Enclosure type |
7 U High, 19 in rack mount with integral rack mount ears, 25 mm (1 in) air space required on each side for ventilation |
| Size |
48.3 cm W × 31.0 cm H × 57.2 cm D (19 in × 12.2 in × 22.5 in) with handles removed |
| Weight |
74 kg (163 lb) |
| Shipping size |
63.5 cm W × 55.9 cm H × 73.7 cm D (25 in × 22 in × 29 in) |
| Shipping weight |
80 kg (175 lb) |
| Ambient temperature |
15 °C to 35 °C at rated accuracy, 5 °C to 40 °C at reduced accuracy |
| Humidity |
80% to 31 °C decreasing linearly to 50% at 40 °C, (non condensing) |
| Warm-up |
30 min at output current setting |
| Approvals |
CE mark–low voltage compliance to EN61010-3, EMC compliance to EN55022-1 |
| Calibration schedule |
1 year |
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