GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 72)

GEI-100332Ga
——— WIRING PROCEDURES ———
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4.9.4 AC input contactors
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! The contactor sizes must be selected based on the converter rated current. The dimensions
basis is the thermo current AC1, which is absorbed by the input during the rated functioning.
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! The technical data of the contactors, as for example weights, dissipated powers, auxiliary
contacts etc. can be found in the appropriate data sheets.
4.9.5 Control power protection
The 115 VAC/230 VAC control power input, U2 & V2, for the DV-300 are required to be short circuit protected.
This protection can be provided by using standard time delay fuses, or circuit breaker.
The circuit breaker and/or time delay fuses must be selected to survive the short circuit available current of the
feeder source for this circuit, and the inrush current of the drive power supply.
The rating of the fuses or circuit breaker should be sized mainly to protect the wiring from the fuses/circuit
breaker connections to U2 & V2, and not nuisance trip or blow from the inrush current.
The table below, Table 4.9.5, lists the input current characteristics of the control power.
Table 4.9.5: Control power protection
Device Regulation Power Supply
American European Card Power
Rated input current Inrush input current
115 V 230 V 115 V 230 V
6KDV3017
to ...
6KDV3148
6KDV3020
to ...
6KDV3185
SW1-31 60 W 1 A 0.5 A 20 A 10 A
6KDV3224
to ...
6KDV3850
6KDV3280
to ...
6KDV310H
SW2-32 110 W 1.2 A 0.7 A 15 A 7.5 A
GD0315g
The control power input is best served by a power source that is stabilized and buffered from the power system transients.
The control power of many drives can be fed from a single source, as long as proper distribution protection is provided.
For example, a 6KDV3017, with 480VAC input, has control power fed from a 2 KVA 480:115 transformer that
is panel mounted in the drive panel. The transformer primary is wired from the 480VAC drive incoming power
from the load side of the main power disconnect and is fused with Fusetron 600 V 5A FRS fuses. The wires from
the transformer secondary to the drive connection points U2 & V2 are 12 AWG.
No additional circuit protection is required, and control power is disconnected when the main power discon-
nected is off.
If the 2KVA transformer was mounted in a remote panel, a 250V/120V 10A 5kA interrupting CB could be panel
mounted near the Drive to locally turn off the Drive control panel.