CN2822026Y - Closed centrifugal cold water unit high voltage start cabinet - Google Patents
Closed centrifugal cold water unit high voltage start cabinet Download PDFInfo
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- CN2822026Y CN2822026Y CN 200520073704 CN200520073704U CN2822026Y CN 2822026 Y CN2822026 Y CN 2822026Y CN 200520073704 CN200520073704 CN 200520073704 CN 200520073704 U CN200520073704 U CN 200520073704U CN 2822026 Y CN2822026 Y CN 2822026Y
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Abstract
The utility model relates to a high voltage start cabinet of a closed centrifugal water chilling unit, which is suitable for a large-scale factory, an emporium, a trade building, a public business building and other users with chilling demand. The utility model is composed of a lumped supervision module ISM, a monitoring measurement circuit, an output execution circuit, a power control circuit, a signal input circuit, a failure protection alarm circuit, a compressor state indication loop and a power supply protection conversion circuit, wherein the lumped supervision module ISM is connected with the monitoring measurement circuit, the output execution circuit, the power control circuit, the signal input circuit, the failure protection alarm circuit, the compressor state indication loop and the power supply protection conversion circuit, the monitoring measurement circuit is connected with the power supply protection conversion circuit, and the power control circuit is connected with the compressor state indication loop, the signal input circuit, the output execution circuit, the failure protection alarm circuit and the power supply protection conversion circuit. The start cabinet of the utility model has the advantages of simple use, small energy loss, high automatization degree and overall protection supply.
Description
Technical field
The utility model relates to a kind of enclosed type centrifugal refrigerating machines high voltage startup cabinet, is applicable to that mainly integrated mill, market, commerce and trade building, public commercial building and other have the user of refrigeration requirement.
Background technology
Centrifugal refrigerating machines control system commonly used at present adopts 400 volts of power supply power supplies, and current of electric is bigger, so energy consumption is bigger, is unfavorable for energy-conservation.Adopt the hard logic circuit in the control, the loop more complicated is unfavorable for later maintenance, maintenance.
Summary of the invention
The purpose of this utility model is to provide that a kind of use is simple, energy loss is little, automaticity is high, the comprehensive enclosed type centrifugal refrigerating machines high voltage startup cabinet of protection.
The purpose of this utility model reaches like this; a kind of enclosed type centrifugal refrigerating machines high voltage startup cabinet; by lump administration module ISM; the control survey circuit; output executing circuit; power control circuit; signal input circuit; the error protection warning circuit; compressor state indication loop; the power protection change-over circuit is formed; lump administration module ISM and control survey circuit; output executing circuit; power control circuit; signal input circuit; the error protection warning circuit; compressor state indication loop; the power protection change-over circuit connects; the control survey circuit is connected with the power protection change-over circuit, power control circuit and compressor state indication loop; signal input circuit; output executing circuit; the error protection warning circuit; the power protection change-over circuit connects.
Because the utility model adopted above circuit, make start cabinet use simple, energy loss is little, the automaticity height can provide general protection.
Description of drawings
Accompanying drawing is an electrical schematic diagram of the present utility model.
Embodiment
The control survey circuit is by current transformer CT1; CT2; CT3; residual current transformer GFCT; current selected switch AK; voltage-selected switch VK; ammeter PA; voltmeter PV forms; current transformer CT1; CT2; the secondary C1 of CT3; C2; C3 and current selected switch AK one end; lump administration module ISM-J4 terminal board 1; 3; 5 terminals connect; current selected switch AK other end series current table PA; current transformer CT1; CT2; another secondary of CT3 C11; C22; C33 respectively with lump administration module ISM-J4 terminal board 2; 4; 6 terminals connect; voltage-selected switch VK one end is connected with circuit breaker CB2 one end in the power protection change-over circuit; other end series voltage table PV, residual current transformer GFCT secondary T14-1; T14-4 respectively with lump administration module ISM-J5 terminal board 1; 2 terminals connect.The lump administration module adopts the ISM of U.S.'s Carrier.Select phase place by current selected switch AK, again by ammeter PA indication compressor operating current value, by lump administration module ISM monitoring compressor current signal.Select phase place by voltage-selected switch VK, again by voltmeter PV indication supply voltage value, by lump administration module ISM monitoring compressor motor windings residual current signal, in order to the safeguard protection to the compressor electric motor winding to be provided.
Output executing circuit, form by relay PR1, CR2, CR3, CR4, CR5, relay PR1, CR2, CR3, CR4, CR5 coil one end are connected with lump administration module ISM- J9 terminal board 2,8,10,12,14 terminals respectively, the other end is connected with the K12 line in the lump, relay PR1 often leaves auxiliary contact two ends and connects respectively at startup latch buttons SB2 one end in the power control circuit, auxiliary relay KA1 coil one end, relay CR2, CR3, CR4, CR5 often open the auxiliary contact two ends respectively with 7,8 of external long-range terminal board J9; 9,10; 11,12; 13,14 terminals connect.Relay CR2, CR3, CR4, CR5 control peripheral chilled water pump, cooling water pump, blower fan of cooling tower high speed, low cruise respectively.
Power control circuit is by starting latch buttons SB1, SB2, auxiliary relay KA1, vacuum circuit-breaker QF, pressure-operated load switch fuse combined electric apparatus QS forms, start latch buttons SB1 normally closed interlock one end and auxiliary relay KA1 normally closed interlock one end, vacuum circuit-breaker QF normally closed interlock one end in the compressor state indication loop, vacuum circuit-breaker QF normally open contact one end, the K11 line connects, the other end is connected with startup latch buttons SB2 normally closed interlock one end, start relay PR1 normally open contact one end in the latch buttons SB2 normally closed interlock other end and the output executing circuit, the A1 end of vacuum circuit-breaker QF, auxiliary relay KA1 normally open contact one end connects, auxiliary relay KA1 in addition two groups often open auxiliary contact and arrange 20A respectively at external terminal, 20B, 50,51 terminals connect, auxiliary relay KA1 coil one end is connected with the relay PR1 normally open contact other end in the output executing circuit, the auxiliary relay KA1 normally open contact other end is connected with the A2 of vacuum circuit-breaker QF, the auxiliary relay KA1 normally closed interlock other end is connected with the A3 of vacuum circuit-breaker QF, the B1 of the auxiliary relay KA1 coil other end and vacuum circuit-breaker QF, B2, B3, the K12 line connects, pressure-operated load switch fuse combined electric apparatus QS major loop normally open contact one end respectively with 10KV electric power incoming line L1, L2, L3 connects, the other end is connected with vacuum circuit-breaker QF one end, the vacuum circuit-breaker QF other end and compressor electric motor outlet terminal T1, T2, T3 connects.Pressure-operated load switch fuse combined electric apparatus QS realizes the isolation features of power supply, and anchoring wire short out road protection is provided down.Vacuum circuit-breaker QF finishes compressor electric motor energising and outage control.
Signal input circuit by carrying out safety backup input contact XH1, remote start-stop control contact XH2, ice cold-storage contact XH3, start cabinet fault contact XH4, relay HPR and form, carrying out safety backup input contact XH1, remote start-stop control contact XH2, ice cold-storage contact XH3, startup cabinet fault contact XH4 two ends respectively with lump administration module ISM- J2 terminal board 1,2; 3,4; 5,6; 7,8 terminals connect, and relay HPR coil two ends are connected with external terminal row 17,43 terminals respectively, and relay HPR normally open contact one end is connected with the K11 line, and the other end is connected with 1 terminal of lump administration module ISM-J9 terminal board.
The error protection warning circuit is made up of relay CR1, CR6; one end of relay CR1, CR6 coil is connected with lump administration module ISM-J9 terminal board 2,16 terminals respectively; the other end is connected with the K12 line; relay CR1 normally open contact two ends are connected with 5,6 terminals of external long-range terminal board J9, and relay CR6 normally open contact two ends are connected with 15,16 terminals of external long-range terminal board J9.When lump administration module ISM monitoring compressor motor has fault, drive relay CR6 and give alarm signal of far-end, if failure ratio is more serious, lump administration module ISM drives relay CR1 tripping upper level main circuit breaker, protection in support.
Compressor state indication loop by vacuum circuit-breaker QF often open, normally closed auxiliary contact, indicator light 1HL, 2HL form, indicator light 1HL one end is connected with the vacuum circuit-breaker QF normally closed interlock other end, indicator light 2HL one end is connected with the vacuum circuit-breaker QF normally open contact other end, vacuum circuit-breaker QF normally closed interlock, normally open contact one end are connected with the K11 line, and indicator light 1HL, the 2HL other end are connected with the K12 line.The indicator light 1HL indication compressor electric motor state that quits work, 2HL indication compressor electric motor running status.
The power protection change-over circuit is by fuse FU1; FU2; FU3; circuit breaker CB1; CB2; CB3; CB4; CB5; transformer CPT; motor special-purpose metal oxide lightning arrester F; voltage transformer pt 1; PT2; surge absorber C forms; fuse FU1; FU2; FU3 one end and motor special-purpose metal oxide lightning arrester F one end; the pressure-operated load switch combined electrical apparatus QS other end; vacuum circuit-breaker QF one end connects; motor special-purpose metal oxide lightning arrester F other end ground connection; fuse FU1; FU2; the FU3 other end is with transformer CPT one end; voltage transformer pt 1; PT2 one end connects; voltage transformer pt 1; the PT2 other end respectively with circuit breaker CB2; CB4 one end connects; the transformer CPT other end respectively with circuit breaker CB3; CB5 one end connects; the circuit breaker CB5 other end and external terminal row LL1; LL2 connects; the circuit breaker CB3 other end and K11; the K12 line connects; the L1 of the circuit breaker CB4 other end and lump administration module ISM-J3; L2; the L3 terminal connects; the circuit breaker CB2 other end is connected with voltage-selected switch VK one end in monitoring prison amount circuit; circuit breaker CB1 one end and 380 volts of outer power supply source A of external terminal row's three-phase; B; the C terminal connects; the other end and external terminal row OS1; OS2; the OS3 terminal connects, and voltage absorber C is connected with the vacuum circuit-breaker QF other end.Circuit breaker CB4 provides lump administration module ISM one group of three-phase voltage signal.Motor special-purpose metal oxide lightning arrester F provides circuit instantaneous overvoltage protection, and surge absorber C can effectively reduce operation overvoltage grade, protection compressor electric motor winding safety.
K11 line one end is connected with 1 terminal of lump administration module ISM-J1 terminal board, and the other end is connected with 5,7,9,11,13,15 terminals, power control circuit, compressor state indication loop, power protection change-over circuit, the signal input circuit of lump administration module ISM-J9 terminal board.K12 line one end is connected with 2 terminals of lump administration module ISM-J1 terminal board, and the other end is connected with power control circuit, compressor state indication loop, output executing circuit, error protection warning circuit, power protection change-over circuit.
Claims (6)
1; a kind of enclosed type centrifugal refrigerating machines high voltage startup cabinet; it is characterized in that by lump administration module ISM; the control survey circuit; output executing circuit; power control circuit; signal input circuit; the error protection warning circuit; compressor state indication loop; the power protection change-over circuit is formed; lump administration module ISM and control survey circuit; output executing circuit; power control circuit; signal input circuit; the error protection warning circuit; compressor state indication loop; the power protection change-over circuit connects; the control survey circuit is connected with the power protection change-over circuit, power control circuit and compressor state indication loop; signal input circuit; output executing circuit; the error protection warning circuit; the power protection change-over circuit connects.
2; enclosed type centrifugal refrigerating machines high voltage startup cabinet according to claim 1; it is characterized in that the control survey circuit is by current transformer CT1; CT2; CT3; residual current transformer GFCT; current selected switch AK; voltage-selected switch VK; ammeter PA; voltmeter PV forms; current transformer CT1; CT2; the secondary C1 of CT3; C2; C3 and current selected switch AK one end; lump administration module ISM-J4 terminal board 1; 3; 5 terminals connect; current selected switch AK other end series current table PA; current transformer CT1; CT2; another secondary of CT3 C11; C22; C33 respectively with lump administration module ISM-J4 terminal board 2; 4; 6 terminals connect; voltage-selected switch VK one end is connected with circuit breaker CB2 one end in the power protection change-over circuit; other end series voltage table PV, residual current transformer GFCT secondary T14-1; T14-4 respectively with lump administration module ISM-J5 terminal board 1; 2 terminals connect.
3, enclosed type centrifugal refrigerating machines high voltage startup cabinet according to claim 1, it is characterized in that output executing circuit, by relay PR1, CR2, CR3, CR4, CR5 forms, relay PR1, CR2, CR3, CR4, CR5 coil one end respectively with lump administration module ISM-J9 terminal board 2,8,10,12,14 terminals connect, the other end is connected with the K12 line in the lump, relay PR1 often leaves auxiliary contact two ends respectively at startup latch buttons SB2 one end in the power control circuit, auxiliary relay KA1 coil one end connects, relay CR2, CR3, CR4, CR5 often open the auxiliary contact two ends respectively with 7 of external long-range terminal board J9,8; 9,10; 11,12; 13,14 terminals connect.
4, enclosed type centrifugal refrigerating machines high voltage startup cabinet according to claim 1, it is characterized in that power control circuit is by starting latch buttons SB1, SB2, auxiliary relay KA1, vacuum circuit-breaker QF, pressure-operated load switch fuse combined electric apparatus QS forms, start latch buttons SB1 normally closed interlock one end and auxiliary relay KA1 normally closed interlock one end, vacuum circuit-breaker QF normally closed interlock one end in the compressor state indication loop, vacuum circuit-breaker QF normally open contact one end, the K11 line connects, the other end is connected with startup latch buttons SB2 normally closed interlock one end, start relay PR1 normally open contact one end in the latch buttons SB2 normally closed interlock other end and the output executing circuit, the A1 end of vacuum circuit-breaker QF, auxiliary relay KA1 normally open contact one end connects, auxiliary relay KA1 in addition two groups often open auxiliary contact and arrange 20A respectively at external terminal, 20B, 50,51 terminals connect, auxiliary relay KA1 coil one end is connected with the relay PR1 normally open contact other end in the output executing circuit, the auxiliary relay KA1 normally open contact other end is connected with the A2 of vacuum circuit-breaker QF, the auxiliary relay KA1 normally closed interlock other end is connected with the A3 of vacuum circuit-breaker QF, the B1 of the auxiliary relay KA1 coil other end and vacuum circuit-breaker QF, B2, B3, the K12 line connects, pressure-operated load switch fuse combined electric apparatus QS major loop normally open contact one end respectively with 10KV electric power incoming line L1, L2, L3 connects, the other end is connected with vacuum circuit-breaker QF one end, the vacuum circuit-breaker QF other end and compressor electric motor outlet terminal T1, T2, T3 connects.
5, enclosed type centrifugal refrigerating machines high voltage startup cabinet according to claim 1; it is characterized in that the error protection warning circuit is made up of relay CR1, CR6; one end of relay CR1, CR6 coil is connected with lump administration module ISM-J9 terminal board 2,16 terminals respectively; the other end is connected with the K12 line; relay CR1 normally open contact two ends are connected with 5,6 terminals of external long-range terminal board J9, and relay CR6 normally open contact two ends are connected with 15,16 terminals of external long-range terminal board J9.
6; enclosed type centrifugal refrigerating machines high voltage startup cabinet according to claim 1; it is characterized in that the power protection change-over circuit is by fuse FU1; FU2; FU3; circuit breaker CB1; CB2; CB3; CB4; CB5; transformer CPT; motor special-purpose metal oxide lightning arrester F; voltage transformer pt 1; PT2; surge absorber C forms; fuse FU1; FU2; FU3 one end and motor special-purpose metal oxide lightning arrester F one end; the pressure-operated load switch combined electrical apparatus QS other end; vacuum circuit-breaker QF one end connects; motor special-purpose metal oxide lightning arrester F other end ground connection; fuse FU1; FU2; the FU3 other end is with transformer CPT one end; voltage transformer pt 1; PT2 one end connects; voltage transformer pt 1; the PT2 other end respectively with circuit breaker CB2; CB4 one end connects; the transformer CPT other end respectively with circuit breaker CB3; CB5 one end connects the circuit breaker CB5 other end and external terminal row LL1; LL2 connects; the circuit breaker CB3 other end and K11; the K12 line connects; the L1 of the circuit breaker CB4 other end and lump administration module ISM-J3; L2; the L3 terminal connects; the circuit breaker CB2 other end is connected with voltage-selected switch VK one end in monitoring prison amount circuit; circuit breaker CB1 one end and 380 volts of outer power supply source A of external terminal row's three-phase; B; the C terminal connects; the other end and external terminal row OS1; OS2; the OS3 terminal connects, and voltage absorber C is connected with the vacuum circuit-breaker QF other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073704 CN2822026Y (en) | 2005-07-19 | 2005-07-19 | Closed centrifugal cold water unit high voltage start cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073704 CN2822026Y (en) | 2005-07-19 | 2005-07-19 | Closed centrifugal cold water unit high voltage start cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2822026Y true CN2822026Y (en) | 2006-09-27 |
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ID=37018577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073704 Expired - Fee Related CN2822026Y (en) | 2005-07-19 | 2005-07-19 | Closed centrifugal cold water unit high voltage start cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2822026Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101411A (en) * | 2017-04-28 | 2017-08-29 | 麦克维尔空调制冷(武汉)有限公司 | A kind of centrifugal refrigerating machines and power-off quick start method |
-
2005
- 2005-07-19 CN CN 200520073704 patent/CN2822026Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101411A (en) * | 2017-04-28 | 2017-08-29 | 麦克维尔空调制冷(武汉)有限公司 | A kind of centrifugal refrigerating machines and power-off quick start method |
| CN107101411B (en) * | 2017-04-28 | 2020-01-17 | 麦克维尔空调制冷(武汉)有限公司 | Centrifugal water chilling unit and power-off quick starting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |