通过实践和理论分析，可以得出以下结论：
(1) 伺服控制器应用在油田抽油机可以达到节电的效果。根据油井井况的不同，工频运行的节电率为10%~20%(包括无功功率部分)。变频器的节电效果不会高于伺服控制。见实验一和实验二。
(2) 对于要求调速的抽油机，伺服控制器具有输出低速大扭矩的功能，调速简便，可以完全满足抽油机调速的要求。在几种调速方法中***具有优势的一种。我们在实验三和实验四中均进行了8极电磁调速电机和6极普通异步电机的测试，结论是一致的。
(3) 在不改变机械结构的条件下， 实现抽油机低冲次调速运行， 伺服控制的节电效果明显。与电磁调速电机相比，节电率随转速降低而增加， 远大于20%。见实验三和实验四。
SQUARE D TIMING RELAY CAT#JCK-11V20 INPUT: 120VAC/110VDC TIME DELAY: 0.1-10S
SQUARE D TIMING RELAY CAT#9050JCK-15V20 INPUT:120VAC DELAY:1.8-180sec
SQUARE D TIMING RELAY 8501 XTE1
Square D Timing Relay # 8501XTE1 / Industrial Control Relay # 8501X020 ~ Ser A
Square D Thermal-Magnetic Circuit Breaker (Inv.26966)
SQUARE D THERMAL UNIT LOT OF DIFF. BUYING 9 NOB
SQUARE D THERMAL UNIT 1-C 45 * , LOT OF 4*
SQUARE D THERMAL OVERLOADS LOT OF 2 A11.0 0514
Square D Thermal Overload Unit B28.0 Lot of 3
Square D Thermal Overload Relay SEO-5 (8693)
SQUARE D THERMAL OVERLOAD RELAY CLASS 9065
Square D Thermal Overload Relay 9065 TD0.8
Square D Thermal Overload Relay 9065 TD0.54 9065TD0.54
Square D Thermal Overload Relay 9065 C0-1 A
SQUARE D Thermal Overload Relay 9065 C0 1 25 AMP
SQUARE D Thermal Overload Relay 9065 AR0 1R 25 AMP
SQUARE D THERMAL OVERLOAD RELAY # 77233
SQUARE D THERMAL OVERLOAD HEATER ELEMENT B5.50
SQUARE D THERMAL OVERLOAD HEATER ELEMENT B1.88
SQUARE D THERMAL OVERLOAD A4.32 SET OF 6 PIECES. NOS
SQUARE D THERMAL OVERELOAD RELAY BO.63 LOT OF 4
Square D Thermal Magnetic Coil 4323-S1-W28A 110/120V 50/60Hz f/ 8501 Relays !
Square D Terminal Block 9080 LBA261104 !!!
Square D Terminal Block 9080 D-6 6 Circuit 600V #14-4 Wire
SQUARE D TELEMECANIQUE, LP1K06 10BD3, CONTACTOR
SQUARE D TELEMECANIQUE VW3A66301 UTW-SY/MAX-MODBUS JBUS I/O PCMCIA CARD
SQUARE D TELEMECANIQUE MINI CONTACTOR RELAY 24 VDC LP4K0610BW3 3 HP
SQUARE D TELEMECANIQUE LH4N206RT7 SOFT START STARTER 440-480V 3 KW SOFT STOP
Square D Telemecanique Control Contact Block Model# DOB11
SQUARE D TELEMECANIQUE ALTIVAR 31 AC DRIVE PLASTIC COVER HOUSING ATV31HU22N4
Square D Telemecanique 9001-KA-2 Black Pushbutton 9001KA2 9001 KA 2
Square D SyMax Output Module 8030 COM221 COM-221 X Series B 120 Volt VAC Refurb
SQUARE D SYMAX ISOLATED INPUT MODULE 8030 DIM 101 120 V
Square D Symax D-Log Data Controller 8030 DLM-110 DLM110 Series H
SQUARE D SYMAX 8030-DLM-110 D-LOG DATA CONTROLLER WITH KEY
SQUARE D SY/MAX SYMAX OUTPUT MODULE PLC 8030 DOM-221 8030 DOM221 8030 D0M-221 B
SQUARE D SY/MAX REMOTE INTERFACE 8030 CRM-220 X CRM220 CRM-220X Series F
SQUARE D SY/MAX RELAY OUTPUT MODULE 8030-ROM271 8030-ROM-271 SER B1 30617-593-50
SQUARE D SY/MAX POWER SUPPLY 8030 PS-21 SER. A
Square D Sy/Max Isolated Output Module, GOM-221, Class 8030, , WARRANTY
SQUARE D SY/MAX HIM-101 INPUT MODULE,
SQUARE D SY/MAX D-LOG DATA CONTROLLER 8030 DLM-110 8030DLM110 SER M Rev 3.00
Square D SY/MAX Class 8030, Type RIM101, Ser B, Input Module
Square D SY/MAX Class 8005, Type EBU-1 Series A1 Backplane
Square D Sy/Max 8030-ROM271 Relay Output Module ROM271 ROM-271 Ser. A1 SyMax
Square D Sy/Max 8030-RIM101 Input Module RIM101 RIM-101 Ser. C1 SyMax
Square D SY/MAX 8030-HOM-221 PLC
SQUARE D SY/MAX 8030 TYPE HIM-131 SERIES A *REPAIRED*
Square D Sy/Max 8030 RIM 101 Input Module
SQUARE D SY/MAX 8030 CRM-222 REMOTE INTERFACE NICE TAKEOUT MAKE OFFER !!
SQUARE D SY/MAX 12-24VAC/DC INPUT MODULE 8030 HIM-131 SER. B
SQUARE D SY MAX CLASS 8030 120VAC OUTPUT MODULE HOM-221 SER. A
SQUARE D SY MAX CLASS 8030 120VAC OUTPUT MODULE HOM-221