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8. PT disconnection check

The device has a PT disconnection check function. It will send an alarm signal when detects

the PT is disconnected.

PT

 

disconnection

 

criterion

:

There

 

is

 

a

 

phase

 

voltage

 

less

 

than

 

a

 

fixed

 

value

and

 

a

 

phase

 

current

 

is

 

greater

than

 

0

.

04In

used

 

to

 

detect

 

three

-

phase

 

voltage

 

loss

 

and

 

asymmetric

 

disconnection

;

The negative sequence voltage is greater than the fixed value, used to detect asymmetric

disconnection.

After

 

satisfying

 

any

 

of

 

the

 

above

 

conditions

the

 

device

 

reports

 

that

 

the

 

PT

 

is

disconnected

 

after

 

3s

 

delay

.

The

 

criterion

  ①

 

is

 

mainly

 

used

 

to

 

determine

 

the

 

symmetry

 

three

-

phase

 

disconnection

,

also

 

as

 

supplement

 

of

 

the

 

asymmetric

 

disconnection

 

at

 

the

 

same

 

time

.

The

 

current

 

blocking

 

condition

 

is

 

added

 

to

 

prevent

 

the

 

protection

 

device

 

falsely

transmitting

 

an

 

alarm

 

signal

 

when

 

no

 

voltage

 

is

 

applied

 

during

 

the

 

debugging

 

process

.

The  criterion 

 

is

 

specifically

 

used

 

to

 

determine

 

whether

 

there

 

is

 

PT

 

asymmetric

disconnection

.

9.

Low

 

frequency

 

load

 

shedding

 

function

The device is equipped with low-frequency load shedding function with low voltage blocking, current

blocking  and  slip  blocking.  When  the  device  is  put  into  operation,  if  the  frequency exceeds its

normal range (45Hz-55Hz), the low frequency load shedding function is blocked. If the voltage is too

low, it may be a fault state. The protection device should trip and block the low frequency load

shedding function. If the current is too small, it may not be caused by the frequency  reduction

caused  by  this  circuit.  Even  if  the  current  is  reduced,  it  still  won't  be functioning, so the protection

device will block the low frequency load shedding function too. The  A  and  C  phases  of the  device

with  larger  currents  will  be  blocked.  When  the  circuit  is started with a large load such as a motor,

the system frequency is rapidly reduced, so the slip lock is used.

10.

Control

 

loop

 

disconnection

The device is equipped with a control loop disconnection monitoring function, which uses the

combined  contacts  of  the  closing  and  tripping  relays  to  judge  whether  the  control  loop  is normal

through software. It is constituted by                     . When the fault occurs, the protection device

will send control loop disconnection alarm signal after 0.5 second delay.

11.

About  Bus coupler

This device can be used for the bus coupler protection. If there are special requirements, pls tell us

before ordering.

-12-

Содержание KPM83B

Страница 1: ...HENAN COMPERE SMART TECHNOLOGY CO LTD KPM83L Line Protection Monitoring Deivice User Manual ...

Страница 2: ...bility 16 bit high precision A D high measurement accuracy Running and event reports can be saved no less than 32 recent events Graphic LCD menu operation Main Features Multi tasking operating system modular programming good real time performance and high reliability Standard communication protocol for easy communication with PC monitoring or gateway Complete circuit breaker operation loop setting...

Страница 3: ...ated data 3 2 2 Power consumption 3 2 3 Environmental conditions 3 2 4 EMC performance 3 2 5 Electrical Insulation performance 3 2 6 Mechanical performance 4 2 7 Measurement accuracy 4 3 Hardware 3 1 Shape and opening 5 3 2 Button indication 5 3 3 Operating instructions 6 4 KPM83L Microcomputer Line Protection Monitoring device 9 ...

Страница 4: ...operating states and data in real time the information is detailed and intuitive and the operation and debugging are convenient Large capacity information record It can save no less than 32 recent events historical reports with action parameters power down retention easy for accident analysis Adopts MODBUS RTU protocol with RS 485 communication interface The networking is economical and convenient...

Страница 5: ...ce Protection of Second Harmonic Braking v v CT break detection and blocking function v v Fault Recording v Long startup time protection v Charge protection v v Insulation monitoring v v Control loop disconnection Measureme nt function Circuit breaker remote control split output signal v v v v v IA IB IC UA UB UC Ia2 Ib2 Ic2 U 0 I0 P Q F cosΦ etc v v v v Iah Ibh Ich Ia1 Ib1 Ic1 v Unbalanced curren...

Страница 6: ...tive humidity 80 Stored rain and snow proof indoors Ambient air does not contain acidic alkaline or erosive and explosive gas no excitation is applied under the limit value there is no irreversible change in the device After the temperature is restored the device should work normally Atmospheric pressure 80kPa 110kPa relative altitude 2km 2 4 EMC performance Pulse group immunity IEC61000 4 5 level...

Страница 7: ... voltage the device communication loop and 24V weak electric input and output terminal grounded can withstand 1kV peak standard lightning wave impact test its charged conductive terminals are respectively grounded between AC and DC loop between the AC voltage loop and AC current loop it can withstand the 5kV peak standard lightning wave impact test 2 6 Mechanical properties Vibration response IEC2...

Страница 8: ...increase Cursor turn down or menu turn down Cursor move right Letters numbers decrease Confirmation Present interface confirmation Exit Exit current interface Reset reset signal of accident and alarm Backup Used for internal debugging Note There are 6 LED indicators on the panel which are Operation Work status indicator the device will flash continuously during normal operation otherwise it will c...

Страница 9: ...query and modification have the same interface The modification interface can modify the fixed value The query interface cannot After the fixed value has been modified retreat to fixed value management interface and select the fixed value setting menu press the Enter key to confirm the value after input the password 000000 Pls modify the fixed value referring to the fixed value table The fixed val...

Страница 10: ...ess the enter key to save after the setting the parameters fixed value according to the setting table the initial password is 000000 The communication parameters are used to set the communication baud rate the time setting is used to modify the real time clock of the device itself the remote signal parameter is used to set each switch value function definition and the acquisition mode setting in t...

Страница 11: ...n PARA Telesignalling parameter Operating parameter 5 The switch control mainly controls several devices connected to protection device by the control circuit Internal circuit breaker Internal circuit breaker Status Open Control Close 8 ...

Страница 12: ... 60 Frequency error 0 01Hz Low frequency fixed value 46 54Hz Low voltage blocking fixed value 0Un 1Undf dt df dt blocking fixed value 0Hz s 10Hz s Current blocking fixed value 0In 1In 0 1In 1In 4 KPM83L Microcomputer line protection measurement and control device 4 1 Overview KPM83L Microcomputer line protection measurement and control device is mainly used for circuit comprehensive protection con...

Страница 13: ...o large current grounding system and small current grounding system In the fault of large current grounding system the zero sequence current leads the zero sequence voltage 95 110 So we set a sensitive angle of 70 as shown on the right For the direction of the small current grounding system we use the opposite action zone as the one above Ua IMAX IDZ BCJ action TOVERI And And And Or Or Forward dir...

Страница 14: ... check the synchronism and non voltage Check the synchronous check the line voltage without pressure is the extracted voltage The reclose must be put in after the charging is completed the line is in normal operation there is no external blocking reclosing signal and the charging is completed after 15s delay Reclose locking signal is manual tripping and automatic tripping 6 Overvoltage protection ...

Страница 15: ...cking current blocking and slip blocking When the device is put into operation if the frequency exceeds its normal range 45Hz 55Hz the low frequency load shedding function is blocked If the voltage is too low it may be a fault state The protection device should trip and block the low frequency load shedding function If the current is too small it may not be caused by the frequency reduction caused...

Страница 16: ...wer supply signal output Manual closing 05 Closer out 07 Power supply 01 Tripping out 37 Manual tripping 33 Protection tripping 31 Remote control allowed 11 01 02 03 17 18 19 20 18 17 Power supply 02 Alarm signal output DC 220V DC 220V X5 X3 X4 RS485B RS485A MASK 01 02 04 03 08 07 06 05 09 01 02 04 03 08 07 06 05 09 17 19 23 21 09 11 13 15 05 07 03 01 Uc Ua U0 IC IA Ic Ib Ia Un Ub U0n In IB Icn Ib...

Страница 17: ...ithout energy storage Reclose block manual trip DI Control power Manual trip Control power Close out Trip out Protection trip Alarm signal output Power signal disappears output Model Angle Terminal No Trip Pre tripping Remote Pre close Close Red Voltage Circuit breaker Protection current Measurement current Zero sequence current Extraction voltage Zero sequence voltage Protection CT Measurement CT...

Страница 18: ...al output Control loop disconnection output Accident signal output Power 1 close position Power 2 close position Manual trip signal PT disconnection signal output Self trip alarm signal output Device maintenance input Line protection cabinet DC220V Reclose Manual close Remote close Close maintain loop Trip relay signal Close relay signal Trip maintain loop Remote trip Protection trip Manual trip A...

Страница 19: ... Bus PT no volt Bus PT voltage Energy storage switch open Power 1 close Power 2 close Manual close signal PT disconnection signal output Self trip alarm signal output Device maintenance input Signal supply Remote location Signal reset Trolley test position upper knife Trolley run position lower knife Ground knife status Spring without energy storage Reclose block manual DI trip DI3 DI4 Reclose out...

Страница 20: ... storage Reclose block manual trip DI Signal power public terminal DI Loop DI power Reset button Control power Voltage Protection current Measurement current Double PT connection Circuit breaker Manual trip Control power Close out Trip out Protection trip Zero sequence current Extraction voltage Zero sequence voltage Reclose out Manual trip Control loop Accident signal output Protection trip Signa...

Страница 21: ...position Power 2 close position Manual trip signal Device maintenance input Reclose Manual close Remote close Close maintain loop Trip relay signal Close relay signal Trip maintain loop Remote trip Protection trip Manual trip Alarm signal output Power disappears signal output Close position signal Trip position signal Remote location Signal reset Trolley test position upper knife Trolley run posit...

Страница 22: ...nection signal output Self trip alarm signal output Device maintenance input Signal supply L Remote location Signal reset Trolley test position upper knife Trolley run position lower knife Ground knife status Spring without energy storage Reclose block manual DI trip DI3 DI4 Reclose out Manual close Control power L Close out Trip out Manual trip Remote permission Protection trip Alarm signal outpu...

Страница 23: ...ignal reset Trolley test position Trolley run position Ground knife status Spring without energy storage Reclose block manual trip DI Signal power public terminal Manual trip Control power L Close out Trip out Protection trip Reclose out Manual trip Accident signal output Protection trip Signal output Ground signal output Control loop disconnection output Alarm signal output Power signal disappear...

Страница 24: ...manual trip DI DI3 DI4 Circuit breaker manual switch KK Model Angle Terminal No Trip Pre open Remote Pre close Close GreenRed Close trip signal output Ground signal output Control loop disconnection output PT disconnection signal output Self trip alarm signal output Reclose action signal output Line protection cabinet AC220V Line protection cabinet AC220V Primary device Button Fig 9 KPM83L microco...

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