Input Power Connections - Emerson Control Techniques Epsilon Eb Series Reference Manual

Line Fusing and Wire Size
You must incorporate over current protection for the incoming AC power with the minimum
rating shown here. Control Techniques recommends Bussman type: KTK-R, RK1or
equivalent.
Drive Model
EN-204
EN-208
EN-214
Eb-202
Eb-203
Eb-205
Drive Model
EN-204
EN-208
EN-214
Eb-202
Eb-203
Eb-205
* This is at 20% derated drive output only current as required when using single-phase AC power.
Epsilon Only
This inrush current specification assumes the drive has been powered off for at least eight
minutes at 40ºC (104ºF) ambient or five minutes at 25ºC (77ºF) ambient. If this amount
of time has not elapsed since power off, the inrush current will be higher.

Input Power Connections

Epsilon Only
Power must be "Off" for a minimum of 6 minutes for the Epsilon 205 and 3 minutes for
the Epsilon 202/203 drives before unplugging the power connection, to ensure the bus
voltage has decreased to a safe level (below 50 VDC).
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External AC Line Fuse
KTK-R 15 Amp 1Ø
RK1 20 Amp 1Ø
RK1 20 Amp 3Ø
KTK-R 6 Amp
KTK-R 8 Amp
KTK-R 12 Amp
Input Voltage Frequency (Amps RMS) at
(VAC) (Hz) full drive output
90 - 264 / 1 Ø
90 - 264 / 1 Ø 47 - 63
90 - 264 / 1 - 3 Ø 20 A*
90 - 264 / 1 Ø 47 - 63
Recommended Minimum AC/PE Line Wire
Gauge
14 AWG
12 AWG
12 AWG
16 AWG
16 AWG
16 AWG
Input Current
Inrush Current (Amps)
1st Cycle
current
1 Ø 3 Ø
9.5 A - 140 (8ms)
19 A - 140 (8ms)
14 A 100 (5 ms) 3 Ø
4.3
6.5 140 (5 ms)
10.8
Installation
2nd Cycle
50 (8 ms)
50 (8 ms)
40 (5 ms) 3 Ø
20 (2 ms)
30 (2ms)
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