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3.4.3.3Supplying input power from a variac (variable transformer)
When AC power is supplied from a variac, the MicroFlex e100’s
3.4.4 Power disconnect and protection devices
A power disconnect should be installed between the input power supply and the MicroFlex e100 for a
The MicroFlex e100 must have a suitable input power protection device installed, preferably a fuse. Recommended circuit breakers are thermal magnetic devices (1 or 3 phase as required) with characteristics suitable for heavy inductive loads
From | Circuit Breaker |
supply |
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L |
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N |
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| From | Fuse | |||||
| supply |
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L | L |
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| L |
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N | N |
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| N | |
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Figure 4 - Circuit breaker and fuse, single-phase
From | Circuit Breaker |
supply |
|
L1 |
|
From Fuses supply
L1L1
L2
L2L2
L3
L3L3
Circuit breaker or fuse are not supplied.
For CE Compliance, see Appendix C.
Figure 5 - Circuit breaker and fuse, three-phase
Note: Metal conduit or shielded cable should be used. Connect conduits so the use of a line reactor or RC device does not interrupt EMI/RFI shielding.
3.4.4.1Using 2 phases of a 3-phase supply
Power may be derived by connecting two phases of an appropriate
MN1942 |