Descriptions
The resistors are designed to be indirectly cooled with water running through
the water-cooled block assembled on the both sides of the resistors. In
view of the current trend to exploit the large power applied circuits with
semiconductors, demands are increasingly getting higher for non-inductive
resistors with a compact design but a large energy capacity. WDs connected
in series or in parallel will comply with the requirements on the voltage
and current load.
FEATURES
(1) No water leakage
(2) Short time rating power is as large as 500 W per element.
(3) Large absorbing energy
(4) Higher withstand voltage. 10 kV per element at 1.2×50 microseconds waveform
(5) Mounting legs are insulated from elements.
(6) Non-inductive resistor
(7) Large current capacity due to the large cross-sectional area of the element.
CHARACTERISTICS
| Item |
Characteristics of individual resistor used for WD |
| Individual resistor: |
ASW7515 |
| Element dimensions: |
Ø75×Ø20×15 tmm |
| Bulk density: |
2.2 - 2.7 |
| Specific heat: |
0.15 - 0.3 cal/g.°C |
| Thermal conductivity: |
0.003cal/cm.sec.°C |
| Thermal coefficient: |
-0.05 - 0.1%/°C Max |
| Thermal expansion coefficient: |
4 - 7×10-6 |
| Max working temperature: |
250 °C |
| Allowable injection energy: |
10 kJ Max |
| Allowable current: |
800A Max |