Variable speed drives (VSDs) are used to control electrical submersible pumping (ESP) systems and surface pumps. They enable adjustments to be made to production parameters and ESP output when downhole conditions change. Increasing and decreasing motor speed can be used to optimize pump performance, speed or slow production, and avoid gas locking and system cycling. VSDs protect pumps and motors by reducing electrical stress on startup and by adjusting to dynamic conditions as they change. The ability to vary the drive speed reduces the need to replace components, cuts downtime, and lowers costs while improving system runlife.
The correct setting of the mode and timely adjustment of the ESP operation determines not only the daily flow rate of the well, but also other economic indicators of its operation. These include reliability, safety, energy efficiency, etc.
The dedicated special algorithms of VSDs operational system strengthen resources of oil production Companies, significantly save the time of service engineers and contribute to the growth of oil industry. EPS VSDs helps oil and oilfield service companies receive the maximum benefit.
Spetification of Low Voltage Variable Speed Drive ESP-LV
- Input voltage: 3 phase, 380VAC（+/-15%), 480VAC （+/-15%)
- Load capacity: 150% rated current in 60 s.
- Output frequency 1.5-80Hz (asynchronous control mode)
- Control mode: Programmable V/f
- Start mode: smooth starting, synchronous starting, torque lifting, swing starting, impact starting
- Frequency setting: manual setting, constant current, pump inlet pressure, gas lock release
- Mode selection: Manual/automatic switch
- Fault record: Records and stores fault types and related information in the last one year
- Built in Sinewave Output filter
- HMI: 10 inch industrial touch screen
- Suitable for land & offshore platforms
- Suitable for driving submersible asynchronous and PM Motors
- Output voltage and current is correct sinewave
- Input Rectification 6/12/18/24 pulse is selectable
- Amient Temp. 20-+60C
- Protection class: IP20, IP56
- Cooling method: forced air cooling
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Rated output current（A）
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Rated capacity（kVA）
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Full load output capacity with output filter （kVA）
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160
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133
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120
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250
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208
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185
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|
400
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333
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300
|
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630
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524
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470
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800
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665
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600
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1000
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831
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745
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1200
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998
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900
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1400
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1164
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1050
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1600
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1330
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1200
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Products series and Application Environment
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Product Series
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Definitions
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Description
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HP
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High Protection
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IP56(NEMA4X), -20℃... + 60 ℃; 6/12/18/24 pulse rectification; Suitable for outdoor tropical desert
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PS
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PST (Phase-shifting transformer)
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IP56(NEMA4X), -20℃... + 60 ℃; Phase shifting transformer; Suitable for outdoor land integral skid structure
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LH
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Low Harmonic
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IP56(NEMA4X), Stainless steel cabinet, - 20 ℃... + 60 ℃; 6-pulse rectifier + input filter; Suitable for offshore platforms
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RS
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Regular Series
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IP20(NEMA3R), -20℃…+50℃,6/12 pulse rectifier, input harmonic filter optional; Suitable for indoor use
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Spetification of Medium Voltage Variable Speed Drive ESP-MV
- Input voltage: 3 phase, 1300VAC（-15%~+5%),2600VAC （-15%~+5%)
- Suitable for driving submersible asynchronous and PM Motors
- Load capacity: 150% rated current in 60 s.
- Output frequency 0-80Hz
- Control mode: Programmable V/f
- Start mode: smooth starting, synchronous starting, torque lifting, swing starting, maximum torque starting
- Frequency setting: Constant frequency, constant current, pump inlet pressure, external analog quantity
- Mode selection: Manual/automatic switch
- Input Rectification 6 pulse/12 puluse / 6 pulse+input filter
- Output voltage and current is correct sinewave
- HMI: 10 inch industrial touch screen
- Communication: Modbus RS485 interface
- Fault record: Records and stores fault types and related information in the last one year
- Protection level: IP20
- Cooling method: Forced air cooling
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Type
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Input voltage range(V)
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Rated output current(A)
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Output voltage (Without output filter), V
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Output voltage (with output filter), V
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Maximum output capacity, kVA
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Maximum capacity(output filter ), kVA
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EPS-MV-1300-65
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700-1300
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65
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0-1300
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0-1270
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140
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135
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EPS-MV-1300-105
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700-1300
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105
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0-1300
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0-1270
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225
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218
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EPS-MV-2600-65
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1400-2600
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65
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0-2600
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0-2560
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280
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273
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EPS-MV-2600-105
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1400-2600
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105
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0-2600
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0-2560
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454
|
440
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