KXO(CPS) control and protective switching device series

KXO(CPS) control and protective switching device series

◎Summarization

CPS control and protection switch apparatus is new product of low voltage apparatus. CPS control and protective switching main feature realize control and protective function of single structure type product integration and internal coordination, can instead circuit breaker(fuse protector), contactor, overload (or over current, loss of phase) protective relay, starter, isolator, electric motor integration protector etc various traditional discrete components. CPS have 2 operation ways of automatic remote control and local manual control, have coordination time-current protection characteristic, can continuous work after short circuit by control and protective coordination, high breaking capacity, short arc distance, long life, adjustable protection setting current, easy operation, complete accessory module etc advantages, can realize control and protection to electric motor overload and distribution overload.

CPS control and protective switching device solve traditional various problem of unreasonable select of discrete components (normally circuit breaker or fuse protector+ contactor+ overload protective relay) caused unreasonable control and protective coordination, especially overcome the problem: combination different apparatus with different criteria caused uncoordination of protective characteristic and control characteristic, greatly improved control and protective system working reliability and continuous working performance.

The first generation CPS series have big volume, protection adopt bimetal technology. Second generation product solved volume problem, but didn't have improvement on technology. With micro electronic technique widely and deeply used in low voltage apparatus, our company produce KXO series control and protective switching device, overcome congeneric product defect, gather all the advantages of low voltage discrete component, complete function, reliable performance, provide a basic component for simplify and optimized low voltage electric distribution and control system.

◎Function and usage:

KXO control and protective switching apparatus (hereinafter referred to as KXO) adopt modularization single product structure type, gather traditional circuit breaker(fuse protector), contactor, overload (or over current, loss of phase) protective relay, starter, isolator, electric motor integration protector etc low voltage apparatus main function, have 2 operation ways of automatic remote control and local direct manual control, have panel indication and electromechanical signal alarm function, have overvoltage and undervoltage protection function, have phase loss, phase default protection function, residual electricity(current leakage) protection function, have under current, under power protection function, have coordinate time-current protection characteristic(overload inverse time limit, definite time limit, short circuit short time delay, short instantaneous, extra short circuit instantaneous for section protection characteristic ) , user can select function module or accessory as requirement to realize all types electric motor load, distribution load control and protection.

◎Model No. and meaning:

◆Basic type complete structure and model include: main part model No.+ main trip mechanism rated current and breaking capacity grade, intelligent trip mechanism, product function, control power.

◆Product model and each part meaning as below:

◎Main parameter explanation

◆Overall installation size: 125 type and 45 type

◆Main circuit pole: 3P, 4P

◆KXO basic configuration: main part + intelligent controller + auxiliary contact group

◆Main part consist of main circuit basic modules(contact system module, short circuit trip mechanism, electric magnet system module and operate mechanism system module)

◆Short breaking capacity grade: economic type(Y) is 15Ka, basic type(C) is 35kA

◆Breaking time is 2-3ms at anticipated short circuit current, current limiting coefficient under 0.2.

◆Auxiliary contact group consist of short circuit alarm contact, overload alarm contact and one group auxiliary contact(2 normally open and one normally close), 02 means 2 normally open 1 normally close, 06 means 3 normally open 2 normally close+ 1 short circuit 1 over load, also can combine as user requirement, but can't exceed 11 pairs contacts.

◆Intelligent controller rated current Ie: 0.4/1/2.2/4/6.3/12/16/18/25/32/40/45/50/63/80/100/125A

◆Main part rated current In:12/16/18/32/45/63/100/125A

◆Pole: Use 2 numbers to express: first No. means pole, second No. means protection pole, for example 33 means 3P with three pole protection, 30 means 3P without protection.

◆Control power voltage: M:AC220V, Q:AC380V

◎Product model type:

Basic type product KXO configuration: main part, intelligent trip mechanism, auxiliary contact group

Reversible control and protection switching apparatus KXON: use KXO basic type as main switch, combine with mechanical interlock and electric interlock etc accessory, constitute reversible type control and protective switch device, apply to electric motor reversible or two way control and protection

Dual power automatic transfer switching apparatus KXOS: rated current lower than 125A product use KXO basic type as main switch and combine with mechanical interlock and electric interlock etc accessory, constitute CB or PC dual power automatic transfer switching apparatus ATSE, rated current higher than 125A is PC grade.

Voltage reducing starter KXOJ, KXOJ2, KXOZ, KXOR: use KXO basic type as main switch, with suitable contactor, time relay, mechanical interlock and electric interlock constitute Y-△ voltage reducing starter KXOJ, auto-transformer starter KXPZ, resistance voltage reducing starter KXOR, to realize starter voltage reducing start and multi protection.

Dual speed controller KXOD: use KXO basic type as main switch, combine with suitable contactor, electric interlock etc accessory to constitute dual speed controller, apply to dual speed electric motor for control and protection.

Three speed controller KXOD: use KXO basic type as main switch, combine with suitable contactor, electric interlock etc accessory to constitute three speed controller, apply to three speed electric motor for control and protection.

Optional function model type: fire fighting type(F type), isolating type(G type), communication type(T type), distribution type(P type).

◎Application

KXO series product control and protective function integration, structure modularization and miniaturization, high protection grade to environment pollution, high breaking short circuit current capacity, short arc distance, long life, complete protection function, continuous working performance and high reliability, easy installation, operation and maintain etc advantages, widely used in industrial basic facility, fire fighting system and commercial and civilian facility:

◆Metallurgy, coal mining, steel, harbor, ship, railway etc area distribution and electric motor protection and control system

◆Electric motor control center(MMC) and distribution center

◆Electric power station and transformer station

◆Harbor and railway system(for example air harbor, railway, highway passenger center station)

◆highway lighting, ventilation system

◆Army garrison control protection system(like frontier sentry, radar station)

◆fire fighting pump, draught fan in all kinds place.

◆Modern construction lighting, electric power transfer, pump, draught fan, air-conditioner, fire fighting etc

◆Remote control lighting system

◎Classification

◆By object of protection: electric motor protection, distribution protection

◆By operation frequency: frequent operation, infrequent operation

◆By wire connecting way: front panel, back panel, plug in type

◆By working method: digital tube controller, liquid type controller

◎Main feature

◆Compared with the system consist of discrete apparatus(see below table)

A: Have control and protection self coordination characteristic

KXO series concentrate control and protective function together, equivalently circuit breaker (fuse protector)+ contactor+ thermal relay + auxiliary apparatus. Well solved discrete component can't or hard to solve components protection and control characteristic matching matter, makes protection and control characteristic matching more reasonable and perfect(inverse time limit, definite time limit and instantaneous three section protection characteristic), can correct select single product by load power or current, instead traditional apparatus also include self power incoming wire to load terminal, no need derating, greatly reduce designer workload.

B. Have incomparable working reliability and continuous working performance

KXO can work again and no need maintain after breaking short circuit current, it has continuous working performance after breaking short circuit fault: KXO after breaking short circuit current testing, still have more than 6000 times AC-44 electric life, circuit breaker etc system which consist of discrete components can't reach it, KXO this characteristic greatly improved system working reliability and system continuous working performance, the working short circuit breaking capacity Ics 80kA index belong to international leading level and Domestic highest index.

C. Save material and energy

KXO have small volume, less installation acreage, less connect point, less circuit consumption, save energy and material etc advantage.

◆Technical performance comparing table:

◎Main features

◆Have higher breaking capacity and shorter arc distance compared with moulded case circuit breaker

KXO at AC400V rated working short circuit breaking capacity Ics(o-co-co) basic type can reach 35kA , economic type can reach 15kA , at 35kA expect short circuit current breaking time only need 2-3ms, current limiting coefficient lower 0.2, reach moulded case circuit breaker leading level, close fuse protector current limiting level, greatly limit short circuit current motional, thermal impact to system, arc distance shorter than 30mm

◆compared with moulded case circuit breaker protection system, this CPS have protection setting current can be adjusted characteristic:

KXO overload protection current can be adjusted on the panel according to load power. Overcome the defect of moulded case circuit breaker short circuit protecting setting current unadjustable after leaving factory, KXO product even be installed in the end of circuit, in small short circuit current condition, still have good short circuit protection function.

◆Have longer life, and easier operation characteristic compared with contactor performance:

KXO mechanical life reach 1 million times, electric life AC-43 is 1 million times, can both manual operation and remote automatic control.    

◎Other features:

◆Complete accessory

Auxiliary contact and signal alarm contact, door or drawer panel operation mechanism, control circuit transfer module etc, can constitute complete control and protective unit in single product, realize coordinated control and protective function

◆Flexible installation angle

Horizontal or vertical installation won't affect working performance, widely used in compact complete devices, include fixed or drawer type MCC cabinet, have discrete components incomparable advantage

◆Safety and reliability, high protection grade

Front panel, back panel, plug in type wire connecting terminal have anti contacting function, can match protection grade till IP65 high protection grade shell, especially suit for residential building humid place, basement, water pump room, coal mine, harbor, ship, petrochemical industry etc area, it's a ideal product to replace present electric magnet starter, protection type and combined type starter.

◎Save energy

Traditional product use full voltage full current power supply to electromagnetic coil while starting, consume lots power; also need full voltage to maintain electromagnetic coil after starting, consume power more than 22W. This product change to low voltage low current to maintain electromagnetic coil actuation after starting, power consumption less than 2W, saving energy more than 90%.

◆Main circuit parameter

Main circuit consist of main part and intelligent trip mechanism, these 2 parts are necessary configuration to KXO product.

Main rated current In, rated isolating voltage Ui, rated working voltage Ue and optional intelligent controller rated working current Ie range or control power range as below table:

◆Main circuit basic parameter:

◆Main circuit basic parameter:

Note: a)Above power range is referring Y series three phase asynchronous motor technical parameter.

     b) should communicate with manufacturer if have special requirement

◆Suitable rated working system

A. eight hour working system

B. continuous working system

C. Intermittent period working system: KXO load coefficient (on load factor) defined as 40% under this working system. For different rated working voltage and different usage operation cycle index(operation frequency) limit value as below table:

◆Operation frequency limit value:

◆Time-current characteristic

◆Thermal memory

Repeating overload may cause conductor heating, intelligent controller can simulate thermal bimetal characteristic heating affect after overload, short time delay or definite time limit etc fault motion, overload energy need around 30 min to finish releasing, short circuit time delay need around 15 min to finish releasing, if close KXO switch and have overload or short circuit time delay etc fault during thermal releasing time, then motion time will be shorter, to ensure circuit or apparatus get suitable protection.

◎Protection form

◆Rapid short circuit instantaneous protection: Protection current relative with switch main part rated current, setting current Is=20In±20%(valid value) nonadjustable, motion time≤2-3ms

◆Overload long time delay protection: trip characteristic is inverse time limit characteristic I2t=constant, Ir1=(0.3-1)Ie panel 8 grade adjustable, tripping curve 7.2Ir1 tripping time can be selected at (2.08-28.8)s, tripping time tolerance: lower 2Ir1 is ±10%; leave factory tripping curve setting at 6Ir1, tripping time is 3s.

◆Overload long time delay thermal memory: Overload energy 30min+OFF can finish releasing

◆Overload short time delay protection: have inverse time limit short time delay It+ON type and definite time limit short time delay type. I2t+OFF II type tripping characteristic: setting current Ir2=6/7/8/9/10/11/12Ir1+ OFF panel 8 grade adjustable(electric motor protection) or Ir2=3/3.5/4/4.5/5/5.5/6Ir1+ OFF panel 8 grade adjustable(distribution protection), current tolerance is ±10%; leaving factory tripping curve at 8Ir1 tripping time is in (0.05-1)s

◆Overload short time delay thermal memory: Overload energy 15min+OFF can finish releasing

◆Short circuit instantaneous protection: setting current Ir3=8/9/10/11/12/14/16Ir1+ OFF panel 8 grade adjustable, current tolerance is ±15%; motion time less than 50ms, leave factory setting at 14Ir1 (current valid value)

◆Phase default protection: motion setting time can be selected in (1-64)s +OFF, time tolerance is ±20%; leave factory setting value is 10s

◆Phase loss protection: motion setting time can be selected in (1-64)s +OFF, time tolerance is ±20%; leave factory setting value is 10s

◆three phase unbalance protection: any 2 phase current unbalance rate exceed can be select in (20%-100%)+ OFF, tolerance is ±15%;  motion setting time can be selected in (1-64)s +OFF, time tolerance is ±20%; leave factory setting is30%, time is 10s{Unbalance rate= (Max current-min current)/max current}

◆Overvoltage protection: three phase can be selected (145-150)%Un+ OFF, motion setting time can be selected in (1-64)s; leave factory setting 85% rated voltage, tolerance is ±5%' time is 10s, tolerance is ±20%

◆Unervoltage protection: three phase can be selected in (50-95)%Un+ OFF, motion setting time can be selected in (1-64)s; leave factory setting 85% rated voltage, tolerance is ±5%' time is 10s, tolerance is ±20%

◆Start time delay: only protect phase default, phase loss, overvoltage, undervoltage, short circuit, electricity leakage and three phase unbalance, to avoid start large current or over current; setting time can be selected in (1-99)s + OFF. Leave factory in 5s, tolerance ±20%

◆On line programming function: have handhold editor interface

◆Fault indicating: use light to indicate fault type

◎For electric motor control(usage:AC-42,AC-43,AC-44) motion characteristic

◎For distribution circuit load (usage:AC-42,AC-43,AC-44) motion characteristic

Note: A is conventional non-motion current, B is conventional motion current.

◎Product usage:

◆Usage code and typical application:

◎Product electric gap and creep distance

◆Electric gap, creep distance and Uimp etc regulation

◎Dielectrical property

◆power frequency withstand voltage testing voltage value and isolating resistance min value

◆Mechanical life

Main part and its module mechanical life

◆Electric life

Current conduction time from getting through current value to breaking current value is 0.05-0.1s, and AC-43 conduction time should according to regulation load and equivalent thermal current in a period less than conventional thermal current rule to select.

◆Main circuit electric life and getting through/breaking criteria:

◆Getting through, load and breaking short circuit current capacity

◎Main part

Have short circuit protection(like MCCB and fuse protector short circuit protection function), automatic control (like contactor remote control function), local operation and indication function. Mainly consist of shell, theme panel, bottom panel, electromagnet transmission mechanism, operation mechanism, main circuit contactor group(include contact system, short circuit trip mechanism) etc parts.

◎Electromagnet transmission mechanism:

Electromagnet transmission mechanism mainly consist of control coil, iron core, control contact and base etc (similar like contactor electromagnet control system, have undervoltage protection), can accept ON/OFF operation order, control main contact of main circuit contactor group getting through or breaking main circuit. Coil wiring terminal mark is A1,A2.

◎Operation mechanism

Can accept each pole contactor group instantaneous short circuit signal and fault signal from intelligent trip mechanism, cutoff control coil circuit by control contact and break main circuit by electromagnet. Can reset by operation button after fault removal.

KXO operation mechanism working status code on the main panel and indicator position meaning please check operation panel part introduction.

◎Main circuit contactor group(include contact system, short circuit trip mechanism)

Main circuit contactor group consist of moving, fixed dual break contact, grid arc-chute and current limit type rapid short circuit trip mechanism operation mechanism, each pole are independent to each other; main circuit contactor group have current limit type rapid short circuit trip mechanism and high breaking capacity arc extinguish system, realize high current limit characteristic (current limit coefficient less than 0.2) backup protection, its trip current setting value can't be adjusted, only relative with main rated current, its setting value is 20In±20%(valid value).Trip mechanism impact rapidly to open main contact in 2-3ms when short circuit happening in load condition, drive operation mechanism cutoff control coil circuit to switch off all poles in main circuit simultaneously.

◎Operation panel

Automatic control position: KXO inner coil control contact in close position, control circuit ON/OFF condition by coil, can remote automatic control in this status;  

Trip free position: In power on circuit, if have overload short circuit, phase default or loss, overvoltage undervoltage etc fault, product inner relative function module motion to make main contact and circuit control contact in switch off position;

OFF position: coil control contact in OFF position, main contact keep in OFF position;

Reset position: Only can make free tripped KXO restoration normally and reset while operation rotary knob turn to this position

◎Intelligent controller

Have overload reconcilable current adjustable protection function, have time delay, temperature compensation, phase loss, phase default, under current, three phase unbalance, overvoltage, undervoltage and low overload good protection function, setting current value include overload inverse time limit long time delay trip setting current value Ir1, short circuit short time delay setting current value or definite time limit setting current value Ir2 can be adjusted. Can be classified to several type and specification by theory and usage.

◎Auxiliary contact module:

Auxiliary contact base parameter as below table, can connect different voltage to each group contact; auxiliary contact each pair wiring terminal adopt 2 No.s to express: right No. is function No.: 1,2 means normally closed contact, 3,4 means normally open contact; left No. is sequence No., same contact wiring terminal use same sequence No., and all same function contacts use different sequence No. . 95, 98 means fault signal normally open contact, 05,08 means main short circuit signal normally open contact. When main circuit have overload (or overcurrent, overvoltage, phase loss or default etc) fault operation rotary knob in TRIP position, 95, 98 fault alarm signal close, main circuit breaking; have short circuit operation rotary knob in TRIP position, 05,08 main short circuit alarm signal close, 95, 98 fault alarm signal also close, main circuit breaking.

◆Mechanical or electric independent auxiliary contact:

Linkage with main circuit contact or intelligent controller, have electric control and indicating function. Have several specification by contact pair No.

◆Mechanical or electric independent alarm contact:

Integrate auxiliary contact together, linkage with operation mechanism or intelligent controller, have working status and fault reason indication function.

◆Auxiliary contact group

◆Mechanical independent, isolating auxiliary contact