• |
N
Class 1: Forced air cooling |
• |
N
Class 2: Direct water cooling up to 50 volts dc |
• |
N
Class 3: Convection - natural air |
• |
N
Class 4: Indirect cooling - air to water on transformer
- glycol to water on semiconductor, sealed water cooled
|
• |
N
Class 5: Indirect cooling - air to water on transformer
and semiconductors water cooled |
• |
N
Class 6: Indirect cooling - air to glycol on transformer
- glycol to water on semiconductor, sealed air cooled
|
• |
N
Class 7: Air conditioners |
• |
N
Class 8: Air to heat exchangers |
• |
N
Class 9: Oil cooled OA |
• |
N
Class 10: ONAF |
| • |
N
Class 11: OFAF |
| 1.
Switchgear (AC / DC) |
• |
AC
Contactor or starter |
• |
AC
circuit breaker |
• |
AC
circuit breaker with under voltage strip |
• |
AC
circuit breaker with shunt trip
|
• |
DC
circuit breaker for output protection |
| 2.
Fuse monitoring system |
• |
Trigger
fuse system
|
• |
Regeneration
systems (continuous, intermittent, tracting, fail
safe) |
• |
Primary
metering (Ammeter, Voltmeter, Kw, Kwh, Kva, P.F.,Demand)
|
• |
Analog
amd/or digital metering (high accuracy) |
• |
Anti-single
phase protection system |
• |
Reverse
current protection |
• |
Under
and over - voltage protection |
• |
Input
current protection
|
• |
Reusable
filters |
• |
Disposable
filters |
• |
Wall
mounting
|
• |
Space
heaters
|
• |
Remote
control panels |
• |
Computer
control (regulated units) |
• |
Reactor
control
|
• |
1%
Ripple and ripple filter |
3.
Special programming |
• |
Ramp
control and soft start
|
• |
Computer
interface |
• |
Isolated
signals (Feedback or reference) |
• |
Auto
/ manual controls |