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DFE - Internally Bypassed Soft Starter
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The DFE is Fairford's internally bypassed, non-optimising Soft Starter which is perfect for panel builders and end users alike. To the user it offers competitive pricing, soft stopping and the removal of high transient currents.
To the panel builder it can easily substitute a Star/Delta starter because it fits into a similar footprint thus simplifying installation.
Internally Bypassed
Reduces cost because the Soft Starter is out of circuit once it has done its job. This reduces cabinet size and the heat produced which again reduces cost.
Can Substitute Star/Delta Starter
Quicker build time, less maintenance cost, reduced down-time and therefore lower cost of ownership.
Competitive with Star/Delta Starters
Longer life, less maintenance, reduced down-time and therefore lower cost of ownership.
Current
22 - 500 Amp (11 - 280kW @400V)
Operational Voltage
230 - 460 VAC rms (-15% +10%)
Control Supply
24VDC.
DFE 02 - DFE 26 requires Approx 4VA
DFE 30 - DFE 32 requires Approx 12VA
DFE 34 - DFE 38 requires 3 Amps for 1 Second
Rated Frequency
50 - 60 Hz +/- 2Hz
Start Time
0.5 to 12 Seconds (DFE 02 - DFE 26)
0.5 to 25 Seconds (DFE 30 - DFE 38)
Stop Time
0 to 12 Seconds (DFE 02 - DFE 26)
0 to 25 Seconds (DFE 30 - DFE 38)
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Removal of high transient currents
Star/Delta Starters cause ‘shock loading’ to mechanical systems leading to high rates of contactor failure and increased maintenance costs. The DFE Soft Starter with its smooth step-less acceleration virtually eliminates these problems.
Simplified Installation
Rapid Build and Install Time.
No Need to Change Layout Drawings
Saves time and cost.
Index Rating
DFE 02 - DFE 26
Standard AC53b: 3-5:355
Class 10A AC53b: 3-12:348
DFE 30 - DFE 38
Class 10A AC53b: 3-12: 1188
Class 10 AC53b: 3-23: 3577
Ingress Protection
IP20 (Up to 55kW)
IP00 (75kW to 280kW)
Ambient Temperature
0°C to 40°C.
Above 40°C de-rate linearly by 2% FLC per °C to a maximum of 60°C.
Altitude
1000m
Above 1000m de-rate by 1% FLC per 100m to a maximum of 2000m
AMISC0005 - 100/230VAC to 24VDC
Power Supply for DFE 02 to DFE 26
APSU002 - 100/230VAC to 24VDC
Power Supply for DFE 30 to DFE 38 | | |
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