| |
EM4-HVA |
EM7-HV |
| Air gap |
Up to 11 cm (4.3 in) continuously variable |
Up to 17.8 cm (7 in) continuously variable |
| Nominal coil resistance |
0.25 Ω per coil (0.5 Ω wired in series) |
1.0 Ω per coil (0.5 Ω wired in parallel) |
| Standard pole cap diameter |
5.1 cm (2 in) |
7.6 cm (3 in) |
| Optional pole cap diameter |
2.5 cm, 7.6 cm, 10.2 cm (1 in, 3 in, 4 in) |
15.2 cm (6 in) |
| Cooling water |
Tap water or closed cooling system |
| Water flow rate |
7.6 L/min (2 gal/min) |
11.4 L/min (3 gal/min) |
| Pressure drop |
200 kPa (30 psi) |
220 kPa (32 psi) |
| Water chiller cooling capacity |
2.5 kW (8,530 BTU/h) |
8.3 kW (28,321 BTU/h) |
| Water inlet temperature |
15 °C to 25 °C (59 °F to 77 °F) |
15 °C to 32 °C (59 °F to 89 °F) |
| Coil over temperature limit |
45 °C (113 °F) |
| Coil spacing, nominal |
12 cm (4.75 in) |
17.8 cm (7 in) |
| Coil size-width, nominal |
12 cm (4.75 in) |
13.2 cm (5.2 in) |
| Coil size-diameter, nominal |
31.1 cm (12.25 in) |
44.5 cm (17.5 in) |
| Current (maximum continuous operating) |
±70 A (in series) |
±67.5 A (in parallel) |
| Voltage |
±35 V nominal |
±75 V nominal |
| Maximum continuous input power |
2.5 kVA nominal |
9.1 kVA nominal |
| Lake Shore power supply (suggested) |
Model 643 |
Model 648 |
| |
Size |
| Height |
38.7 cm at 40° angle (15.25 in) without stand |
94 cm (37 in) |
| Width |
84.5 cm (33.25 in) |
101.6 cm (40 in) |
| Depth |
50.8 cm (20 in) |
66 cm (26 in) |
| Weight |
201.9 kg (445 lb) |
614 kg (1350 lb) |
| Shipping weight |
215.5 kg (475 lb) |
660 kg (1500 lb) |
| Shipping dimensions |
95.5 cm × 58 cm × 56 cm
(38 in × 23 in × 22 in) |
86 cm × 122 cm × 119.4 cm
(34 in × 48 in × 47 in) |