| Specifications |
Output curent and voltage:
Model 665: ±100A, ±50 V (5 kW)
Model 668: ±135A, ±65 V (8.8 kW)
Ramp rate: up to 10 A/s
Load: resistive electromagnet or any equivalent resistive load. Supplies are compensated for typical electromagnets - highly inductive loads may require tuning in the field.
Nominal load:
Model 665: 0.5 W
Model 668: 0.5 W
Minimum load(consult Lake Shore for other magnet load requirements):
Model 665: 0.25 W
Model 668: 0.35 W
Output current stability: ±(0.01% of reading + 0.01% of full scale range) under conditions of constant line voltage, load, and temperature
Output noise: ±(0.001% of reading + 0.001% of full scale range) peak to peak, between 0.01 Hz and 1 Hz
Voltage ripple: 5 mV RMS + 0.01% of full scale range
Output settings: Current setpoint, current limit, and voltage limit
Output programming: Local via two 10-turn potentiometers (100%, 1%); remote via ±10 V programming input (BR2 connector)
Output displays: Current and voltage outputs displayed with digital resolution of ≥ 0.1 A
Output voltage monitor: ±10 V full scale (BR2 connector)
Output current monitor: ±10 V full scale (BR2 connector)
Current output connections: 9.5 mm threaded studs with nuts
On/off control: Front panel separate on, off, and reset push buttons; remote on/off capable
Power supply fault detection circuitry |
- Transistor fault detect
- Slew rate limit protection
- Internal condensation protection
- Overheat protection
- Overpower protection
- Overload protection
- External interlocks
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| Input power : |
| Model 665: |
(7.6 kVA max) |
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21 A/phase with 208/220 VAC between phases |
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11 A/phase with 380/400 VAC between phases |
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| Model 668: |
(15.5 kVA max) |
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39 A/phase with 208 VAC between phases |
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19 A/phase with 400 VAC between phases |
| Custom voltage configurations are available |
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50–60 Hz; 3 phase plus ground (four wire)
Line voltage must be specified at time of order. Cable from power supply to facility power not included |
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| Cooling water requirements: (minimum at 0.5 W nominal load): |
| Model 665: |
flow rate: 8 L/min (2.1 gal/min) |
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pressure drop: 0.12 Mpa (17 psi) |
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| Model 668: |
flow rate: 8 L/min (2.1 gal/min) |
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pressure drop: 0.14 Mpa (20 psi) |
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Cooling water connections:
Model 665 and 668: ¼-inch NPT female thread; ¼-inch NPT male to
10 mm (~3/8 in) hose barb included
Operating environment:
Ambient temperature: +10 ºC to +30 ºC (50 ºF to 86 ºF)
Humidity: 55% ±10% (non-condensing)
Cooling water: +15 ºC to +25 ºC (59 ºF to 77 ºF)
CAUTION: Internal condensation can cause damage to the power supply.
Mechanical outline: Free standing rack cabinet with locking wheels and 4 lifting eye bolts
Size and weight:
Model 665: 135 cm high × 70 cm deep × 60 cm wide
(53.1 in × 27.6 in × 23.6 in); 250 kG (550 lb)
Model 668: 135 cm high × 70 cm deep × 60 cm wide
(53.1 in × 27.6 in × 23.6 in); 354 kG (780 lb)
Shipping Size and weight:
Model 665: 152 cm × 84 cm × 76 cm (60 in × 33 in × 30 in);
295 kg (650 lb)
Model 668: 178 cm × 91 cm × 76 cm (70 in × 36 in × 30 in);
400 kg (880 lb) |
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