CN106100511B - A kind of control device of DCS rooms 10kV motor - Google Patents

A kind of control device of DCS rooms 10kV motor Download PDF

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Publication number
CN106100511B
CN106100511B CN201610542844.8A CN201610542844A CN106100511B CN 106100511 B CN106100511 B CN 106100511B CN 201610542844 A CN201610542844 A CN 201610542844A CN 106100511 B CN106100511 B CN 106100511B
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motor
normally opened
node
change
dcs
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CN106100511A (en
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李云双
张向民
王斯特
朱志辉
宋成林
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Northeast University Design and Research Institute Co Ltd
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Northeast University Design and Research Institute Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply

Abstract

The present invention provides a kind of control device of DCS rooms 10kV motor, is related to high-tension motor control technology field.The device includes motor protector, current transformer group, fuse group, miniature circuit breaker, high-pressure vacuum contactor, change-over switch, motor temperature detect switch (TDS), auxiliary reclay, switch knob, opening button and primary cut-out normally opened contact, and the start-stop in DCS rooms using communication modes control 10kV motor is realized using the communication function of motor protector.The present invention motor protector of increase applied to low-tension motor in high voltage connector cabinet; the unification of high-low pressure motor control mode can be realized; be advantageous to the implementation of standardization; the dosage of control cable and cable testing bridge can effectively be reduced; arbitrarily increase the input/output signal of 10kV motor in can also being run in the later stage; reduce maintenance, maintenance workload, reduce cost of investment and running cost.

Description

A kind of control device of DCS rooms 10kV motor
Technical field：
The present invention relates to the control dress of high-tension motor control technology field, more particularly to a kind of DCS rooms 10kV motor Put.
Background technology：
All motor of alumina producer carry out the control mode of on the spot/concentration, control on the spot by being arranged on motor Other on-site control case (case by abbreviation machine) realizes that centralized Control is realized by the centralized control system unification of DCS rooms.Low-tension motor is adopted Protection is controlled with motor protector, can communicatively carry out centralized Control in DCS rooms by its DP communication interface, and 10kV motor are protected using integrated automation device, and it only communicates RS-485 interfaces, without DP communication interfaces, And it communicates RS-485 interfaces and has led to electric ECS control centres, so 10kV motor are typically to be drawn using control cable To technique DCS rooms, centralized Control is carried out in a manner of hardwire.
10kV motor use control cable to carry out centralized Control in a manner of hardwire, there is following weak point：
(1) 10kV motor can not arbitrarily be increased in the maintenance in later stage to DCS input/output signal, to 10kV electricity The collection of motivation data has certain limitation；
(2) low voltage motor all uses communication modes, and 10kV motor use hardwire mode, receives DCS electronic The pattern disunity of machine control signal, it is unfavorable for the implementation of standardization；
(3) add control cable, the expense of cable testing bridge, also increase operation during maintenance, maintenance workload.
The content of the invention：
The defects of for prior art, the present invention provides a kind of control device of DCS rooms 10kV motor, by communication side Formula carries out start-stop control in technique DCS rooms to 10kV motor, can realize the unification of high-low pressure motor control mode, effectively reduces Control the dosage of cable and cable testing bridge.
The present invention provides a kind of control device of DCS rooms 10kV motor, including motor protector MK, current transformer Group, fuse group, miniature circuit breaker ZK, high-pressure vacuum contactor KM, change-over switch SA, motor temperature detect switch (TDS) WK, it is middle after Electrical equipment KA, switch knob SF, opening button SS and primary cut-out normally opened contact QF；
Current transformer group includes three current transformers TA1, TA2 and TA3, and the of the secondary side of three current transformers One end is connected with motor protector MK three current sample inputs Pc01, Pc03 and Pc05 respectively, three current transformers The second end of secondary side be connected and be grounded with motor protector MK current sample input common port Pc06 respectively；
Fuse group includes three fuses FU1, FU2 and FU3, three fuses FU1, FU2 and FU3 first end difference Be connected with the triple line for drawing 380V AC powers outside, three fuses FU1, FU2 and FU3 the second end respectively with motor protector MK three voltage sample inputs Pc09, Pc10 connect with Pc12；
The first end of the poles of miniature circuit breaker ZK first is connected with exchanging small bus phase line L, the poles of miniature circuit breaker ZK second First end is connected with exchanging small bus zero line N；Second end of the poles of miniature circuit breaker ZK first and high-pressure vacuum contactor KM first The 3rd pair of first end to normally-closed contact of first end, high-pressure vacuum contactor KM first to normally opened contact, change-over switch SA section The first end of point, change-over switch SA first are connected respectively to the first end of node, change-over switch SA second to the first end of node； High-pressure vacuum contactor KM first is to the second end of normally opened contact with high-pressure vacuum contactor KM first to the second of normally-closed contact End, the second end of the poles of miniature circuit breaker ZK second connect respectively；
Second end of the 3rd pair of node of change-over switch SA successively with motor temperature detect switch (TDS) WK, auxiliary reclay KA line Circle, the second end connection of the poles of miniature circuit breaker ZK second；Change-over switch SA first to the second end of node successively with opening button SS, switch knob SF, primary cut-out normally opened contact QF, high-pressure vacuum contactor KM coil, the poles of miniature circuit breaker ZK second The second end connection；Switch knob SF both ends parallel high voltage vacuum contactor KM second pair of normally opened contact；Switch knob SF connects The one end for meeting primary cut-out normally opened contact QF is connected with the normally opened output contact MQD first ends of motor protector MK, motor protection The normally opened ends of output contact MQD second of device MK are connected with change-over switch SA second to the end of node second；
The 4th pair of node first end of change-over switch SA, high-pressure vacuum contactor KM the 3rd pair of normally opened contact first end, centre Relay KA normally opened contacts first end, standby normally opened contact S first ends the first signal input part with motor protector MK respectively X2-1, secondary signal input X2-2, the 3rd signal input part X2-3, the 4th signal input part X2-4 connections；Change-over switch SA The 4th pair of end of node second, the 3rd pair of end of normally opened contact second of high-pressure vacuum contactor KM, auxiliary reclay KA normally opened contacts Two ends, the standby ends of normally opened contact S second are connected with motor protector MK input signal common port X2-5；
Motor protector MK working power input X1-2 is connected with drawing 220V AC powers outside；
The input/output signal and current signal of 10kV motor are by motor protector MK DP communication ports using communication Line leads to DCS rooms.
Further, the device also includes combined floodgate indicator lamp HR and separating brake indicator lamp HG；Combined floodgate indicator lamp HR is connected to micro- Second end of the first poles of type breaker ZK and high-pressure vacuum contactor KM first are between the first end of normally opened contact；Separating brake indicates Lamp HG is connected to first end of the second end of the poles of miniature circuit breaker ZK first with high-pressure vacuum contactor KM first to normally-closed contact Between.
Further, motor protector MK working power input X1-2 and outer draw between 220V AC powers by one Individual fuse FU4 connections.
Further, motor protector MK, current transformer group, fuse group, miniature circuit breaker ZK, high pressure vacuum contact Device KM and auxiliary reclay KA is arranged in high voltage connector cabinet, and primary cut-out normally opened contact QF is arranged on high-voltage circuit breaker cabinet Interior, change-over switch SA, switch knob SF, opening button SS, combined floodgate indicator lamp HR and separating brake indicator lamp HG are arranged on by machine in case, Motor temperature detect switch (TDS) WK is installed on 10kV motor bodies.
Further, change-over switch SA gear includes shelves, middle 0 grade and DCS shelves on the spot；When gear goes to shelves on the spot, Change-over switch SA first pair of node and the 3rd pair of node closure, when gear goes to middle 0 grade, change-over switch SA all nodes Do not close, when gear goes to DCS shelves, change-over switch SA second pair of node, the 3rd pair of node and the 4th pair of node closure.
As shown from the above technical solution, the control device of a kind of DCS rooms 10kV motor provided by the invention, in high-voltage connecting Motor protector of the increase applied to low-tension motor, is realized in DCS using the communication function of motor protector in tentaculum cabinet Room can be realized the unification of high-low pressure motor control mode, be advantageous to standard using the start-stop of communication modes control 10kV motor The implementation of change, the dosage of control cable and cable testing bridge can be effectively reduced, arbitrarily increase 10kV is electronic in can also being run in the later stage The input/output signal of machine, reduce maintenance, maintenance workload, reduce cost of investment and running cost.
Brief description of the drawings：
Fig. 1 is the 10kV motor distribution system diagrams of the embodiment of the present invention；
Fig. 2 is the control device circuit theory diagrams of the DCS rooms 10kV motor of the embodiment of the present invention；
Fig. 3 is the structural representation of the 10kV high voltage connector cabinets of the embodiment of the present invention.
In figure：A, busbar compartment；B, circuit breaker cart room；C, cable vault；D, relay control room；1st, high pressure vacuum contacts Device KM end of incoming cables；2nd, earthed switch；3rd, overvoltage protection device；4th, inlet wire cable；5th, outlet cable.
Embodiment：
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
In the present embodiment, distribution is carried out to the disintegrating machine M of 10kV, a 355kW in certain alumina producer, distribution sets high pressure Breaker cabinet and high voltage connector cabinet, its distribution system major loop in high-voltage circuit breaker cabinet as shown in figure 1, use comprehensive automation Device carries out electic protection to disintegrating machine M, and the contactor in high voltage connector cabinet only carries out on-off 10kV to disintegrating machine M The operation of main power source.The two places operation side of on the spot/concentration is carried out to disintegrating machine M using the control device of DCS rooms 10kV motor The control of formula, control operation is to carry out start-stop control using case by machine on the spot, and centralized Control behaviour is taken as communication modes in work Skill DCS rooms carry out start-stop control.
A kind of control device of DCS rooms 10kV motor, as shown in Fig. 2 including motor protector MK, current transformer Group, fuse group, miniature circuit breaker ZK, high-pressure vacuum contactor KM, change-over switch SA, motor temperature detect switch (TDS) WK, it is middle after Electrical equipment KA, switch knob SF, opening button SS, combined floodgate indicator lamp HR, separating brake indicator lamp HG and primary cut-out normally opened contact QF.
Wherein, motor protector MK uses UNT-MMI models；Current transformer group include three current transformer TA1, TA2 and TA3, using LZZBJ12,50/5A model；Fuse group includes three fuses FU1, FU2 and FU3, uses GF1-16/4A models；Miniature circuit breaker ZK uses CH2-2P/6A models；High-pressure vacuum contactor KM uses VCF-12D/D630A Model；Change-over switch SA uses LW39-16B-6KC-202/2Ak models；Motor temperature detect switch (TDS) WK is that motor is supporting normally opened Point, is installed on motor body；Auxiliary reclay KA uses GMR-8/6A models；Switch knob SF uses LA39-B2-/2g Model；Opening button SS uses LA39-B2-/2r models；Combined floodgate indicator lamp HR uses AD16-16B/r31 models；Separating brake indicates Lamp HG uses AD-16B/g31 models；Primary cut-out normally opened contact QF is the high pressure out of distribution system mesohigh breaker cabinet The normally opened contact that breaker attracts.
Using 2.5mm2Electric wire by three current transformer TA1, TA2 and TA3 secondary side first ends respectively with motor protect Shield device MK three current sample inputs Pco1, Pc03 connect with Pc05, three current transformers TA1, TA2 and TA3 bis- times The end of side second is connected and is grounded with motor protector MK current sample input common port Pc06.Using 1.5mm2Electric wire will Three fuses FU1, FU2 and FU3 first end are connected with drawing the triple line of 380V power supplys outside respectively, three fuse FU1, FU2 and FU3 the second end is connected with motor protector three voltage sample inputs Pc09, Pc10 and Pc12 respectively, is drawn outside 380V power supply is the sampled voltage of motor protector, is 380V analog voltage.Motor protector MK working power Input X1-1, X1-2 and X1-3 use 1.5mm2Electric wire be connected with drawing the triple line of 220V AC powers outside, to ensure to pacify Entirely, in motor protector MK working power input X1-2 and outer one fuse FU4 of access between drawing 220V AC powers.
Using 1.5mm2Electric wire the first end of the poles of miniature circuit breaker ZK first is connected with exchanging small bus phase line L, it is micro- The first end of the second poles of type breaker ZK is connected with exchanging small bus zero line N；Second end of the poles of miniature circuit breaker ZK first is with closing The 3rd pair of lock indicator lamp HR first ends, separating brake indicator lamp HG first ends, change-over switch SA node 5.-first end 6. 5., conversion Switch SA first to node 1.-first end 2. 1., change-over switch SA second to node 3. -3. first end 4. connects respectively； The second ends of combined floodgate indicator lamp HR are connected with high-pressure vacuum contactor KM first to the first end of normally opened contact, separating brake indicator lamp HG One end is connected with high-pressure vacuum contactor KM first to the first end of normally-closed contact, and high-pressure vacuum contactor KM first touches to normally opened Second end of point respectively with high-pressure vacuum contactor KM first to the second end of normally-closed contact, the poles of miniature circuit breaker ZK second the Two ends connect.
The 3rd pair of node of change-over switch SA 5.-the second end 6. 6. successively with motor temperature detect switch (TDS) WK, auxiliary reclay KA coil, the second end connection of the poles of miniature circuit breaker ZK second.
Change-over switch SA first to node 1. -2. the second end 2. breaks with opening button SS, switch knob SF, height successively Road device normally opened contact QF, high-pressure vacuum contactor KM coil, the poles of miniature circuit breaker ZK second the second end connection；The combined floodgate Button SF both ends parallel high voltage vacuum contactor KM second pair of normally opened contact；The switch knob SF connections primary cut-out is normal The one end for opening contact QF is connected with the normally opened output contact MQD first ends of the motor protector MK, and the motor protector MK is normal Open the ends of output contact MQD second and change-over switch SA second to node 3. -4. the second end 4. is connected.
The 4th pair of node of change-over switch SA 7.-first end 8. 8., the 3rd pair of normally opened contact of high-pressure vacuum contactor KM One end, auxiliary reclay KA normally opened contacts first end, standby normally opened contact S first ends are believed with the first of motor protector MK respectively Number input X2-1, secondary signal input X2-2, the 3rd signal input part X2-3, the 4th signal input part X2-4 connections；Turn Change switch SA the 4th pair of node 7.-the second end 8. 7., the 3rd pair of end of normally opened contact second of high-pressure vacuum contactor KM, it is middle after The second end of electrical equipment KA normally opened contacts, the standby ends of normally opened contact S second the input signal common port X2- with motor protector MK respectively 5 connections.
Change-over switch SA gear includes shelves, middle 0 grade and DCS shelves on the spot, when gear goes to shelves on the spot, first pair of node 1. -2. with the 3rd pair of node 5. -6. closing, when going to middle 0 grade, all nodes do not close, when going to DCS shelves, second pair Node 3. -4., 5. -6. and the 4th pair of node 7. -8. closes the 3rd pair of node, the action such as following table institute that its node closure is opened Show：
Node On the spot 0 DCS
①-② Closure - -
③-④ - - Closure
⑤-⑥ Closure - Closure
⑦-⑧ - - Closure
On the spot/concentration selection input signal of 10kV motor, operation input are believed using connection DJVVP-2 × 1.5 Number, temperature alarming input signal, spare input signal, motor start-stop output signal, motor current signal pass through motor protector MK DP communication ports lead to DCS rooms, and start-stop control is carried out to 10kV motor using communication modes.Using KVVP-0.45/ 0.75th, on-off model is led to case by machine by 12 × 1.5 control cable by high voltage connector cabinet, is entered by the button on case by machine Start-stop controls row motor on the spot.
In the present embodiment, the structure of high voltage connector cabinet is carried out as shown in figure 3, using the type switch cubicles of KYN28A -12 Reforming processing, including busbar compartment A, circuit breaker cart room B, cable vault C and relay control room D.By the mother in busbar compartment A Line, bus casing are cancelled, and inlet wire cable 4 is directed directly in busbar compartment A, and connect with high-pressure vacuum contactor KM end of incoming cables l Connect；High-pressure vacuum contactor KM is installed in the B of circuit breaker cart room；Current transformer group, earthed switch are installed in cable vault C 2nd, lower outlet, i.e. inlet wire cable 4 and outlet cable 5 are entered under overvoltage protection device 3 and cable；Installed in relay control room D Motor protector MK, auxiliary reclay KA, miniature circuit breaker ZK and fuse group.Change-over switch SA, switch knob SF, separating brake are pressed Button SS, combined floodgate indicator lamp HR and separating brake indicator lamp HG are arranged on by machine in case.
In the present embodiment, by increasing the motor protector applied to low-tension motor in high voltage connector cabinet, utilize The communication function of motor protector is realized electronic using communication modes control 10kV motor, unified full factory's high-low pressure in DCS rooms The control mode of machine, the inconsistent of motor control method is avoided, be advantageous to the implementation of standardization, can effectively reduce control electricity The dosage of cable and cable testing bridge, arbitrarily increase the input/output signal of 10kV motor in can also being run in the later stage, reduce inspection Repair, maintenance workload, reduce cost of investment and running cost.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used To be modified to the technical scheme described in previous embodiment, either which part or all technical characteristic are equal Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from the model that the claims in the present invention are limited Enclose.

Claims (5)

  1. A kind of 1. control device of DCS rooms 10kV motor, it is characterised in that including motor protector MK, current transformer group, Fuse group, miniature circuit breaker ZK, high-pressure vacuum contactor KM, change-over switch SA, motor temperature detect switch (TDS) WK, auxiliary reclay KA, switch knob SF, opening button SS and primary cut-out normally opened contact QF；
    The current transformer group includes three current transformers TA1, TA2 and TA3, the secondary side of three current transformers First end be connected respectively with three current sample inputs Pc01, Pc03 and Pc05 of the motor protector MK, described three Second end of the secondary side of individual current transformer connects with the current sample input common port Pc06 of the motor protector MK respectively Connect and be grounded；
    The fuse group includes three fuses FU1, FU2 and FU3, described three fuses FU1, FU2 and FU3 first end Be connected respectively with drawing the triple line of 380V AC powers outside, described three fuses FU1, FU2 and FU3 the second end respectively with institute Three voltage sample inputs Pc09, Pc10 for stating motor protector MK connect with Pc12；
    Working power input X1-1, X1-2 and X1-3 of the motor protector MK respectively with drawing the three of 220V AC powers outside Phase line connects；
    The first end of the poles of miniature circuit breaker ZK first is connected with exchanging small bus phase line L, the miniature circuit breaker ZK second The first end of pole is connected with exchanging small bus zero line N；Second end of the poles of miniature circuit breaker ZK first contacts with high pressure vacuum Device KM first is to the first end of the first end, high-pressure vacuum contactor KM first of normally opened contact to normally-closed contact, change-over switch SA The first end of 3rd pair of node, change-over switch SA first are to the first end of node, change-over switch SA second to the first end of node Connect respectively；The high-pressure vacuum contactor KM first is to the second end of normally opened contact with high-pressure vacuum contactor KM first to normal The second end, the second end of the poles of miniature circuit breaker ZK second of closed contact connect respectively；
    Second end of the 3rd pair of node of change-over switch SA successively with the motor temperature detect switch (TDS) WK, auxiliary reclay KA Coil, the second end connection of the poles of miniature circuit breaker ZK second；
    The change-over switch SA first is normal with opening button SS, switch knob SF, primary cut-out successively to the second end of node Open contact QF, high-pressure vacuum contactor KM coil, the poles of miniature circuit breaker ZK second the second end connection；The switch knob SF Both ends parallel high voltage vacuum contactor KM second pair of normally opened contact；The switch knob SF connections primary cut-out normally opened contact QF one end is connected with the normally opened output contact MQD first ends of the motor protector MK, the normally opened outputs of motor protector MK The ends of contact MQD second are connected with change-over switch SA second to the end of node second；
    Described the 4th pair of node first end of change-over switch SA, high-pressure vacuum contactor KM the 3rd pair of normally opened contact first end, centre Relay KA normally opened contacts first end, standby normally opened contact S first ends are defeated with the first signal of the motor protector MK respectively Enter to hold X2-1, secondary signal input X2-2, the 3rd signal input part X2-3, the 4th signal input part X2-4 connections；Described turn It is normal to change the 3rd couple of switch SA the 4th pair of end of node second, the high-pressure vacuum contactor KM end of normally opened contact second, auxiliary reclay KA Open the end of contact second, the standby ends of normally opened contact S second are connected with the input signal common port X2-5 of the motor protector MK；
    The input/output signal and current signal of the 10kV motor are used by the DP communication ports of the motor protector MK Connection leads to DCS rooms.
  2. 2. the control device of a kind of DCS rooms 10kV motor according to claim 1, it is characterised in that also include closing a floodgate Indicator lamp HR and separating brake indicator lamp HG；The combined floodgate indicator lamp HR be connected to the second end of the poles of miniature circuit breaker ZK first with High-pressure vacuum contactor KM first is between the first end of normally opened contact；The separating brake indicator lamp HG is connected to the miniature open circuit Second end of the poles of device ZK first and high-pressure vacuum contactor KM first are between the first end of normally-closed contact.
  3. 3. the control device of a kind of DCS rooms 10kV motor according to claim 1, it is characterised in that the motor is protected Shield device MK working power input X1-2 and outer draw between 220V AC powers by a fuse FU4 connection.
  4. 4. the control device of a kind of DCS rooms 10kV motor according to claim 2, it is characterised in that the motor is protected Protect device MK, current transformer group, fuse group, miniature circuit breaker ZK, high-pressure vacuum contactor KM and auxiliary reclay KA installations In high voltage connector cabinet；The primary cut-out normally opened contact QF is arranged in high-voltage circuit breaker cabinet；The change-over switch SA, Switch knob SF, opening button SS, combined floodgate indicator lamp HR and separating brake indicator lamp HG are arranged on by machine in case；The motor temperature control Switch WK is installed on the 10kV motor bodies.
  5. 5. the control device of a kind of DCS rooms 10kV motor according to claim 1, it is characterised in that the conversion is opened Closing SA gear includes shelves, middle 0 grade and DCS shelves on the spot；When gear goes to shelves on the spot, change-over switch SA first pair of node and 3rd pair of node closure, when gear goes to middle 0 grade, change-over switch SA all nodes do not close, and gear goes to DCS shelves When, change-over switch SA second pair of node, the 3rd pair of node and the 4th pair of node closure.
CN201610542844.8A 2016-07-12 2016-07-12 A kind of control device of DCS rooms 10kV motor Active CN106100511B (en)

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CN106100511B true CN106100511B (en) 2018-04-03

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Publication number Priority date Publication date Assignee Title
GB406277A (en) * 1932-08-11 1934-02-12 James Andrew Dorrat Improvements in welding machines
CN201955673U (en) * 2010-12-29 2011-08-31 中国瑞林工程技术有限公司 Intelligent motor control center
CN103501000A (en) * 2013-09-28 2014-01-08 河北工业大学 Comprehensive experiment platform device of low-voltage power distribution control system
CN103746632A (en) * 2014-01-24 2014-04-23 中山市明阳电器有限公司 Low-voltage motor control system
CN204597236U (en) * 2015-05-11 2015-08-26 南京自强铁路车辆配件有限公司 A kind of low-tension switch cabinet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB406277A (en) * 1932-08-11 1934-02-12 James Andrew Dorrat Improvements in welding machines
CN201955673U (en) * 2010-12-29 2011-08-31 中国瑞林工程技术有限公司 Intelligent motor control center
CN103501000A (en) * 2013-09-28 2014-01-08 河北工业大学 Comprehensive experiment platform device of low-voltage power distribution control system
CN103746632A (en) * 2014-01-24 2014-04-23 中山市明阳电器有限公司 Low-voltage motor control system
CN204597236U (en) * 2015-05-11 2015-08-26 南京自强铁路车辆配件有限公司 A kind of low-tension switch cabinet

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
《分布式智能电动机控制系统研制总体设计》;段永强等;《工业控制计算机》;20000331;第13卷(第3期);全文 *
《高压电动机DCS控制回路的缺陷及改进》;孙长民;《中氮肥》;20000228(第1期);全文 *

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