Input Power Connections - Emerson Control Techniques EN Series Installation Manual

Transformer output voltage drop may become a limiting factor at motor speeds and loads near
maximum ratings. Typically, higher KVA transformers have lower voltage drop due to lower
impedance.
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
Input Voltage
Drive Model
(VAC)
EN-204 90 - 264 / 1 Ø
EN-208 90 - 264 / 1 Ø
EN-214 90 - 264 / 1 - 3 Ø
* This is at 20% derated drive output only current as required when using single-phase AC power.

Input Power Connections

According to UL requirements, the EN drive is suitable for use on a circuit capable of
delivering not more than 5000 RMS symmetrical amperes, 240 volts maximum.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Recommended Minimum AC/PE Line Wire
External AC Line Fuse
KTK-R 15 Amp 1Ø
RK1 20 Amp 1Ø
RK1 20 Amp 3Ø
Input Current
Frequency (Amps RMS) at
(Hz) full drive output
current
1 Ø 3 Ø
9.5 A -
47 - 63 19 A -
20 A* 14 A
Installation
Gauge
14 AWG
12 AWG
12 AWG
Inrush Current (Amps)
1st Cycle 2nd Cycle
140 (8ms) 50 (8 ms)
140 (8ms) 50 (8 ms)
100 (5 ms) 3 Ø 40 (5 ms) 3 Ø
15