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Specifications of the WellPilot® Variable Speed Drive for Rod Pumping
| Electrical Input Supply |
| Three-phase voltage |
230, 380, 480 Vac (±10%) |
| Three-phase frequency |
50 to 60 Hz (±5%) |
| Single-phase voltage |
230, 480 Vac (±10%) |
| Single-phase frequency |
50 to 60 Hz (±5%) |
| Electrical Power Factor |
| Overall |
1.00 displacement power factor
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0.94 overall power factor at all speeds |
| Electrical Output Rating |
| Voltage |
Zero to input voltage, three-phase |
| Frequency |
Zero to 120 Hz flux vector control |
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Zero to 300 Hz variable frequency control |
| Switching frequency |
Programmable, 2 to 8 kHz varies with Hp |
| Overload current |
110 to 120% of rated for one minute (normal duty) |
| Electrical Conversion |
| Rectifier Unit |
Six-diode, three-phase (six-pulse) full wave bridge below 40 Hp |
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Diode-SCR, 6-phase (12-pulse) full-wave bridge for 40 Hp and above |
| Inverter Unit |
Six-IGBT, four-quadrant, trap or sine wave output |
| Environmental |
| Operating temperature |
-40° to 122°F (-40° to 40°C) |
| Storage temperature |
-4° to 140°F (-20° to 60°C) |
| Relative humidity |
5% to 95%, non condensing |
| Altitude |
Zero to 3300 ft. (1000 m) at full rating |
| Inputs and Outputs |
| Analog inputs |
Siz 12-bit analog inputs: 0 to 5 Vdc, 1 to 5 Vdc, or 4 to 20 mA |
| Analog outputs |
Two 12-bit analog outputs (4 to 20 mA) |
| Pulse output |
0 to 32 kHz |
| Digital inputs |
Eight |
| Digital outputs |
Eight |
| Serial Communications |
| Modbus® RTU |
8500 protocol
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EIA RS232 and RS422/485, 1200 to 19200 baud
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Modbus ASCII, Modbus RTU |
| Enclosure |
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Type 3R |
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Engineered for all weather conditions |
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Door interlocked breaker main disconnect |
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Front mounted keypad and controls in secondary door |
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Control transformer |
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Panel mount enclosure (sizes one to three) |
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Floor mount enclosure (size four) |
| Optional |
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24 Vdc power supply for external analog signals |
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Communication (Ethernet) |
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Line/load reactors |
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IEEE-519 rated inlet harmonic package |
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Long lead filter (DV/DT) |
| Dimensional Data |
Encl.
Size |
HP |
Height
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Width
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Depth
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Weight
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in. |
cm. |
in. |
cm. |
in. |
cm. |
lbs. |
kg. |
| 1 |
5-30 |
36 |
91.44 |
24 |
60.96 |
18 |
45.72 |
200 |
90.72 |
| 2 |
40-50 |
48 |
121.92 |
24 |
60.96 |
18 |
45.72 |
240 |
108.86 |
| 3 |
60-100 |
48 |
121.92 |
30 |
76.2 |
18 |
45.72 |
280 |
127.0 |
| 4 |
125-150 |
60 |
152.4 |
36 |
91.44 |
20 |
50.8 |
350 |
158.76 |
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