Back-up Transformer Protection Relays

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User’s manual for MTPR-650Hb main

transformer backup protection device

Manufactured by ZuHai Wanlida Electric co Ltd, China.

Sole Distributor in India: EAGLE TECHNOLOGY

Prepared by：

Proofed by：

Approved by：

Document No.：WLD[K]-JY-228-2010 Version No.: V2.00.01

Date of publication：July, 2010

Copyright: Zhuhai Wanlida Electric Co., Ltd.

Note: Our company reserves the right to modify this manual. For any inconsistency

between the product and this manual, please contact us for relevant services.

Manual for MTPR-650Hb main transformer backup protection device ETWLD[K]-JY-228-2010

EAGLE TECHNOLOGY Address: No. 201, L-2, B-11, Surya City, Bangalore-560081

E-mail: [email protected], Phone No: +91-9535-122013 , Web: http://eaglewanlida.com Page 1

F o r e w o r d

1. Model description

MTPR-650Hb device: microcomputer transformer low voltage side backup

protection measuring and control, the structural type is Hb.

2. References

General specification for static protection, security and automatic

equipment, DL 478-2001

Technical code for relaying protection and security automatic

equipment, GB/T 14285-2006

Design code for relaying protection and automatic device of electric

power installation, GB50062-92

3. Caution

Negative sequence voltage involved in this series of protection is combined with

phase voltage，all of low voltage component depend on line voltage in compound

voltage block，if one of the three line voltages is lower than low voltage setting, low

voltage component will operate and unblock over current protection. Three-section

over-current respectively has composite voltage block on/off words controlling on/off

of each composite voltage block function.

The appearance should be inspected before power is applied, to ensure that the

panel is OK without scratch, the screws are tightened, the device is grounded firmly,

all screws of plug-ins are tightened and in good contact.

When power is applied, the “Run” indicator on the panel should flash, nixie tube

displays primary measuring value in cycle and LCD displays protective, measuring

value etc. in cycle.

Terminals D25～D28 are DC 4～20mA measuring circuit, the signal must be provided

by specific equipment when testing, it is prohibited to apply the signal by relay testing

device.

The operation circuit in the device fits DC power only, if it is to connect with AC power,

the power should be rectified and filtered.

It is prohibited to plug or unplug the plug-ins when power is present, in order to avoid

damage to the device.

It is prohibited to do binary output test when the device is running with primary

equipments.




1. Product description．．．．．．．．．．．．．．．．．．

1.1 Scope of application

MTPR-650Hb microcomputer transformer low voltage side backup protection device

applies to 110KV power system. MTPR-650Hb, MTPR-630Hb differential protection

device and MTPR-640Hb microcomputer transformer high voltage side backup protection

device together constitute a complete protection for a large transformer.

1.2 Function and specification

1.2.1 Protective function

Three-section（three time limit for each section）composite voltage block direction

over-current protection

Zero sequence voltage alarm function

Bus charging protection

Zero sequence current protection

Overload

Starting fan

Block voltage regulation

composite voltage block output

PT failure alarm/block

CT failure alarm

1.2.2 Auxiliary Function

Harmonic spectrum analysis

Phase display

Integral energy

Alarm on device self-test fault

Protective settings read and modified by remote

Fault recorder

2-way programmable 4～20mA output

Provide ethernet print function(manual print setting value, manual/auto print reports).

1.2.3 Measuring and controlling function

Power measurement（remote measurement）： Voltage, current, active power,

reactive power, active energy, reactive energy, power factor, power grid frequency,

non-electric quantity measurement and so on

Remote signal: 19 binary inputs, including: 16 for outside collection, 3-way for the

internal collection

1.2.4 Communication capability




2 standard RS485 multipoint communication ports

2 industrial ethernet ports

Supports single, dual network communication, it is fully qualified for network

redundancy and backup

IEC-60870-5-103 （RS485 communication mode）, IEC-60870-5-104 （industrial

ethernet communication mode） standard communication protocol

1.2.5 GPS clock synchronization function

The device is able to receive GPS clock minute synchronization (or second

synchronization) through RS485 differentiate voltage, and it can be done with

monitoring system to accomplish GPS precise clock synchronization.

1.2.6 Device specifications

32-bit DSP microprocessor

Real-time multi-task operating system and C++ program techniques, realizing online

programming

Double-screen display (LCD display and nixie tube display), easy for inspection

2-way 4~20mA DC quantity output, which can be set flexibly as any corresponding

electric quantity (such as current, voltage, power, frequency, etc.)

Collecting 2 ways of 4~20mA DC quantities for measurement of non-electric

quantities, such as temperature, pressure, and realizing online monitoring

Power quality analysis capabilities, complete harmonic analysis function

Integration of perfect meter function, measuring function

Excellent hardware interchangeability, easy user maintenance and reduced quantity

of spare parts

Protection output relays can be configured flexibly for user convenience

Using a 6U, 19/3” standard enclosure in a rear plug-in structure; the device can be

installed in site on a switchboard or combined in a centralized manner

1.2.7 Main technical specifications

Rated data

Power supply：DC/AC 86～265V

Operating voltage：DC 220V or DC 110V

AC voltage：100/ 3 V or 100V

AC current：5A or 1A

Frequency: 50Hz

Power consumption




DC circuit：＜10W（normal operation）；＜15W（protection operation）.

AC voltage circuit：＜0.5VA/phase

AC current circuit：＜1VA/phase（In=5A）；＜0.5VA/phase（In=1A）.

Overload capability

AC voltage circuit：1.2 times rated voltage continuous operation

Measuring current：1.2 times rated current continuous operation

Protection current：2 times rated current continuous operation

10 times rated current，allowed for 10 s

40 times rated current，allowed for 1 s

Range and error of setting value

Maximum range of setting value:

Voltage component：1V～120V

Current component：0.1In～20In

Frequency：45.00Hz～55.00Hz

Delay component：0.00s～100.00s

Error of setting value：

Current and voltage setting value：≤±3% of setting value

Frequency setting value：≤±0.02Hz

Angle setting value：≤±2°

Whole-group operation time (including relay’s intrinsic time):

Intrinsic operation time of percentage differential protection: 1.5 times the

setting value not greater than 40ms.

Measuring accuracy

AC current: Class 0.2

AC voltage: Class 0.2

4～20mA DC quantity input：≤± 1%

Power: Class 0.5

Integral energy: Class 1 (active), Class 2 (reactive)

Frequency: ≤±0.02Hz

SOE resolution: ≤2ms

Pulse width of pulse quantity: ≥10ms

4~20mA DC quantity output: ≤±1%

Capacity of trip/closing output contact

Can be connected to DC 250V，8A for prolonged periods




GPS time synchronization error

Synchronization error≤2ms

Environmental conditions

Ambient temperature：

Operating：-20℃～+55℃.

Storage：-25℃～+70℃，rainproof and snow-proof rooms with relative humidity not

greater than 80%, ambient air free of acid, alkaline or other corrosive and explosive gas;

no excitation quality is applied at the limits, the device shall not have any irreversible

change; after temperature restoration, the device shall operate properly.

Relative humidity: The average relative humidity of the most humid month shall not

be greater than 90%, the average minimum temperature of this month not lower than 25℃

and there shall be no surface condensation; at the highest temperature of +40℃, the

average maximum humidity shall not exceed 50%.

Atmospheric pressure：80kPa～110kPa(below relative altitude of 2km).

1.2.8 Hardware structure

The device uses a 6U, 19/3” standard enclosure, with aluminum alloy casing and

installed by overall embedding. The display panel is mounted in the front, and the other

plug-in modules are rear mounted. From the rear view, the power, I/O, CPU and AC

plug-in modules are from the left to the right.

External dimensions and boring diagram

Structural and dimensional diagram Boring diagram for installation




Devices fabricated on-screen steps: first release on-screen stents unfastening

screws, remove the stents; installed the device on the screen from the front and push until

close to the fixed plate; install the stent 2, and then stent 1, and then use fastening screw

to insertion hole from rear of stent1, and then screwed into stent 2 and tighten screw; the

stents from up and down are installed in the same way; use grounding screws to connect

grounding line.

2. Functional description

2.1 Three-section composite voltage block direction over-current protection

This device sets up three-section over-current protection. Each has three time delays.

By setting the control word soft strap, it can be set that whether each of the protection is

on or off and whether it is equipped with direction judgment( it can be set as positive or

reverse), and whether it is blocked by composite voltage. Direction operating zone is

-60°~120°（when it is in positive direction，suppose U is 0°，the phase of I is changeable，

when in the opposite direction, the operating zone is the remaining 180°；in which，Ia

corresponds to Ubc，Ib corresponds to Uca，Ic corresponds to Uab）.

Composite voltage component consists of negative sequence voltage

U2(over-vlotage) and phase-to-phase low-voltage U（the minimum line voltage）.It is used

for block over-current protection when any fault occurs. When either negative sequence

voltage U2 or low-voltage U is satisfied, over-current protection can be on, otherwise,

over-current protection is blocked.




When composite voltage operates, the device will output the signal to other side

backup protection through output terminal, in order to control the over-current protection

output. That is to say, besides accepting its side composite voltage block, the over-current

protection can also accept other sides’ composite voltage block. The protection logic is

shown in Fig.2-1

Fig 2-1 Operation logic of composite voltage block direction over-current protection

2.2 Zero sequence voltage alarm function

When zero sequence voltage is more than zero sequence voltage setting, the

protection will operate after delay. The protection logic is shown in Fig2-2.

Fig 2-2 Operation logic of Zero sequence voltage alarm function

2.3 Bus charging protection

Bus charging protection is the time limit instantaneous over-current protection. The

protection is only on for bus charging for a short time. When the device detects its side

breaker changing from trip to close, bus charging protection will be on for a short time.

When the operating condition is met, the protection will trip its side breaker after set delay.

The on time can be set. When the on time is over, the bus charging protection will be off.

The protection logic is shown in Fig 2-3.

≥

U2>

≥

&

I>

Over-current protection control

word ON

Over-current protection plate

closing

Directional component operating

Other side compound voltage

Low voltage component operating

Other side compound voltage block

Hard plate function ON/OFF

Directional block ON/OFF

Compound voltage block ON/OFF

Compound voltage output ON/OFF

Compound voltage

output

T1 delay

T2 delay

T3 delay

Protection output

Protection output

Protection output

U0>zero sequence

voltage setting value

TZero sequence voltage

alarm ON/OFFProtection output

sequence




Fig 2-3 Operation logic of bus charging protection

2.4 Zero sequence current protection

When zero sequence current is more than zero sequence over-current setting, the

protection will operate after delay. The protection logic is shown in Fig 2-4.

Fig 2-4 Operation logic of Zero sequence current protection

2.5 Over-load protection

Three phase A, B, C ，when maximum phase current is more than over-load setting,

the protection will operate after delay. Protection operating logic is as Fig 2-5.

Fig.2-5 Operation logic of Over-load protection

2.6 Starting fan

When a certain phase current is more than starting fan setting, the output relay will

block. The protection logic is shown in Fig 2-6.

Fig.2-6 Operation logic of Starting fan

Imax>over load

setting valueTOver load ON/OFF Protection

output sequence

I > t/0

ON/OFF

Protection output sequence

I0>zero sequence over-current setting value

TZero sequence over-

current protection ON/OFF Protection output sequence

&

&

Breaker position from tripping to

closing

T<opening time

Charged protection plate closing

Imax>current setting value of bus charging protection

Hard plate function ON/OFF

Bus charging protection ON/OFF

Delay Protection output




2.7 Block voltage regulation

When a certain phase current is more than block voltage when a certain phase

current is more than block voltage regulation setting, the output relay will block after

delay. The protection logic is shown in Fig2-7.

Fig 2-7 Operation logic of Block voltage regulation

2.8 PT failure alarm

The criteria of PT failure differ depending on different wiring mode. When PT failure

block function is on, if PT failure occurs, the device will block the complex voltage

components and current direction components. The criteria of PT failure are as follows：

V-V wiring mode

The current of the phase with the maximum current is less than the maximum

load-current（use the load-current setting）.

① The maximum phase-to-phase voltage is less than 30V and the maximum

phase current is more than 0.1In；

② Negative sequence voltage is more than 8V,

When any of the above condition is met, the device will report PT failure after delay

(settable). When the failure disappears, the alarm will return.

Y-Y wiring mode

The current of the phase with the maximum current is less than the maximum

load-current（use the load-current setting）.

① When |Ua+Ub+Uc|>7V and the difference between the maximum line voltage

and the minimum line voltage is more than, it is considered as one-phase or

two-phase PT failure；

② When |Ua+Ub+Uc∣ > 7V and the minimum line voltage is less than 18V；it is

used for checking two-phase failure.

③ When MAX{Uab，Ubc，Uca}<7V and the maximum phase current is more than

0.1In, it’s considered as PT three-phase failure.

When any of the above condition is met, the device will report PT failure after delay

(settable). When the failure disappears, the alarm will return.

I > t/0

ON/OFF

Protection output sequence




Fig 2-8 Operation logic of PT failure alarm protection PT failure alarm

2.9 CT failure alarm

When CT failure function is on, if CT failure occurs, the device will send alarm

signal.

When in normal operation，the sum of the three phase current of each side is zero.

(less than 0.1 times rated current).When one phase CT failure occurs，the sum of three

phase current is not zero (more than 0.1 times rated current). In order to distinguish with

ground fault，the following judgment should be conducted：

①Among the three phases，the current of the one with the minimum current is zero.

(less than 0.1 times rated current).

②The current of the one with the maximum current is not zero. (more than 0.1 times

rated current)， but less than CT failure block current.

2.10 Integral Energy

Active power and reactive power are accumulated into active energy and reactive

energy in real-time by software.

2.11 Fault record

See the communication coding table for the protection voltage and current waveform

data collected by the recording unit.

PT failure operation

information

&

TPT

PT failure ON/OFF

|MaxU-MinU|>18V

&MinU<18V

&

MaxU<7V MaxU=Max(Uab,Ubc,Uca)

MinU=Min(Uab,Ubc,Uca)

&

MaxU<30V

U2>8V

≥

&

V-V wiring

Max{Ia,Ib,Ic}>0.1*In

≥

Max{Ia，Ib，Ib}<Igfh

&

≥

&

Max{Ia,Ib,Ic}>0.1*In

7V|cUbUaU|

7V|cUbUaU|

PT

failu

re c

om

po

ne

nt




3. List of parameters and setting values

3.1 System parameters

Parameters Range Description

Basic parameters setting

Secondary rated

current（In） 0-1 Set step:1（factory default 0）00：5A；01：1A

PT ratio 1-1500 Set step:1（factory default 100）

CT ratio 1-5000 Set step:1（factory default 100）

PT wiring mode 0-1 Set step:1（factory default 0）00：Y-Y；01：V-V

Harmonic calculation

channel choice 0-11

Harmonic calculation choice corresponding reference

（when it is YY wring mode）：

00：Off

1:Ia,2:Ib,3:Ic,4:I0,5:IA,6:IB,7:IC,

8:Ua,9:Ub,10:Uc,11:U0

Wave Recrod 1/0 1/0：On/Off (factory default Off)

Hardword on/off 1/0 1/0：On/Off (factory default Off)

Earth Mode 0-2 00：No Earth，01：Earth，02：Res. Earth

(factory default 0)

D/A Channel setting




Parameters Range Description

DA1～2 Channel

choice 0-11

Select DA1～2 output corresponding reference：00:No

1:IA,2:IB,3:IC,4:Ua,5:Ub,6:Uc,7:Uab,8:Ubc,

9:Uca,10:P,11:Q

Voltage reference ： 0—120V corresponding to

4mA—20mA，

Rated 5A：

Current reference ： 0—6A corresponding to

4mA—20mA，

Power reference ： 0—1000W corresponding to

4mA—20mA.

Rated 1A：

Current reference ： 0—1.2A corresponding to

4mA—20mA，

Power reference：0—200W corresponding to

4mA—20mA.

DA1～2 Adjusting

Factor 0.5-1.5 Adjust parameter of channel D/A 1～2（4-20mA）

3.2 List of setting value

Setting name Range Description

Protection On/Off

Over-current 1 section protection

（Overcurrent 1） 1/0 1/0：On/Off (factory default Off)





Over-current 1 section direction

（OC 1 Direction） 1/0 1/0：On/Off (factory default Off)








Over-current 1 section

compounded voltage latching

（OC 1 CV Lock）

1/0 1/0：On/Off (factory default Off)



（OC 2 CV Lock）




（OC 3 CV Lock）


Zero sequence alarm

(ZS Voltage Alarm) 1/0 1/0：On/Off (factory default Off)


(Bus Charge PROT) 1/0 1/0：On/Off (factory default Off)

Zero sequence over-current

protection (ZS OC Protect) 1/0 1/0：On/Off (factory default Off)

Overload 1/0 1/0：On/Off (factory default Off)

Startup cooling 1/0 1/0：On/Off (factory default Off)

Block voltage regulation

(V Adjust Lock) 1/0 1/0：On/Off (factory default Off)

External side composite voltage

block

(Other CV Lock)


Composite voltage block output

(CV Out Lock) 1/0 1/0：On/Off (factory default Off)

PT failure alarm 1/0 1/0：On/Off (factory default Off)

PT failure block 1/0 1/0：On/Off (factory default Off)

CT failure alarm 1/0 1/0：On/Off (factory default Off)

Three-section composite voltage block direction over-current protection

（Overcurrent）

Low voltage 10.00－90.00V Set step:0.01V(factory default 90V)




Negative sequence voltage

（NS Voltage） 5.00-30.00V Set step:0.01V(factory default 10V)

Over-current 1 section current

（Overcurrent 1）（0.1-20）In Set step:0.01A(factory default 20In)






（OC 1 Direction） 0-1

Set step:1（factory default 0）

00：Positive；01：Reverse









Over-current 1 section delay1

（T1 Overcurrent 1） 0.00-100.00s Set step:0.01s(factory default 5s)

Over-current 1 section delay 2

（T2 Overcurrent ） 0.00-100.00s Set step:0.01s(factory default 5s)















Zero sequence voltage alarm（ZS Voltage Alarm）




Zero sequence voltage setting

（ZS Voltage Vaule） 0-200V Set step:0.01V(factory default 120V)

Zero sequence voltage delay

（ZS Voltage Time） 0.00-100.00s Set step:0.01A(factory default 100s)

Bus charging protection（Bus Charge PROT）

Bus charging protection current

setting (Bus Char.Current) （0.1-20）In Set step:0.01A(factory default 20In)

Bus charging protection delay

setting (Bus Char.Time) 0.00-15.00s Set step:0.01s(factory default 1s)

Bus charging protection on time

(Bus Char. Open T) 0.00-15.00s Set step:0.01s(factory default 3s)

Zero-sequence over-current protection（ZS OC Protect）

Zero-sequence over-current

setting (ZS OC Vaule) 0-100A Set step:0.01A(factory default 2A)

Zero-sequence over-current delay

(ZS OC Time) 0.00-100.00s Set step:0.01s(factory default 100s)

Overload

Overload current （0.1-20）In Set step:0.01A(factory default 20In)

Overload time 0.00-100.00s Set step:0.01s(factory default 100s)

Starting fun （Startup Cooling）

Starting fan current

(Cooling Current) 0.00-50.00A Set step:0.01A(factory default 50A)

Starting fan delay

(Cooling Time) 0.00-100s Set step:0.01s(factory default 5s)

Block voltage regulation（V Adjust Lock）

Block voltage regulation setting

(V Adjust Value) 0.00-50.00A Set step:0.01A(factory default 50A)

Block voltage regulation delay

(V Adjust Time) 0.00-100s Set step:0.01s(factory default 5s)

PT/CT Failure

CT failure block current

(CT Failure Lock) 1-10.00A Set step:0.01A(factory default 10A)

CT failure delay

(CT Failure Time) 5.00-100s Set step:0.01s(factory default 15s)




PT failure delay

(PT Failure Time) 5.00-100s Set step:0.01s(factory default 15s)




4.Description of binary input/output and analog quantities

4.1 Monitoring analog quantities

Under【Protection Data 】，【Measuring Data】，【Integral Energy】 menu in【State

Display】, monitor analog quantity. Press the “”, “” keys to flip over. The precision of

the device has been calibrated. The protection current is calibrated at double the rated

current, and the measuring current is calibrated at a time the rated current. The list and

description are as follows:

Analog quantity

terminal

Analog quantity

name Testing method

Terminals D01, D02 Protecting Phase A

current(Ia)

Add double the rating, displayed

deviation not exceed 1%

Terminals D03, D04 Protecting Phase B

current (Ib)



Terminals D05, D06 Protecting Phase C

current (Ic)



Terminals D07, D08 Zero sequence

current(I0)



Terminals D11, D12 Testing phase A

current(IA)

Add one times the rating, displayed

deviation not exceed 0.2%

Terminals D13, D14 Testing phase B

current (IB)



Terminals D15, D16 Testing phase C

current (IC)



Terminals D17, D18 Phase A Voltage(Ua) Add 50V， displayed deviation not

exceed 0.5%

Terminals D19, D20 Phase B Voltage (Ub) Add 50V， displayed deviation not

exceed 0.5%

Terminals D21, D22 Phase C Voltage (Uc) Add 50V， displayed deviation not

exceed 0.5%

Terminals D23, D24 Zero voltage(U0) Add 50V， displayed deviation not

exceed 0.5%

Terminals D25, D26 4～20mA DC input1 Add 10mA， displayed deviation not

exceed 3%

Terminals D27, D28 4～20mA DC input2 Add 10mA， displayed deviation not




Analog quantity

terminal

Analog quantity

name Testing method

exceed 3%

Add current to

terminals D11, D12；

D15, D16 according to

polarity； add voltage

to D17, D18；D19, D20；


polarity

Three-phase active

power

Add one times rated current，add100V

line voltage

Change phase angle，displayed power


Add current to

terminals D11, D12；


polarity；add voltage to

D17, D18；D19, D20；


polarity

Three-phase reactive

power

Add one times rated current，add100V

line voltage

Change phase angle，displayed power


4.2 Check of binary input quantity

Under 【Binary input】menu in【State Display】menu，check binary input, press the

“”, “”keys to flip over.

Binary input

terminal

Binary input name Check method

B01 Binary input common terminal

（used to be connected with

the negative pole of DC220

and DC110V external power）

Binary input can be connected to external

220V or110V DC power. Connect negative

pole to terminal B01，connect positive pole

to terminals B02～B13，under【Binary

input】 menu in【State Display】, the input

state can be seen. This device also

provides 24V DC power. If a

self-generated power is used, terminal

B14 can be connected to terminals B02～

B13，under【Binary input】 menu in【State

Display】,the input state can be seen. For

the choice of input power, please specify

B02 Breaker position

B03 Trolley operation position

B04 Trolley test position

B05 Grounded knife position

B06 Spring non-storage

B07 Other side composite voltage

operation

B08 Binary input 7




B09 Binary input 8 in the order. Factory default is external

DC220V B10 Binary input 9

B11 Binary input 10

B12 Binary input 11

B13 Binary input 12

B14 Positive pole of

self-generated DC 24V

C12 Binary input 13

Connect C16 to C12, C13, C14, C15,

under 【 Binary input 】 menu in 【 State

Display】, the input state can be seen.

C13 Binary input 14

C14 Charging protection strap

C15 Over-current protection strap

C16 Binary input common terminal

(+24V)

A17 Manual trip binary input Connect 220V to A17，A19 grounding

A15 Manual close binary input Connect 220V to A15，A19 grounding

A07 Operation circuit failure Connect 220V to A20，A13or A14

grounding A08

4.3 Check of binary output quantity

Under 【Output Test】menu，monitor binary output. Press the “”, “”keys to flip over.

Binary output terminal Binary output name Check method

B15-B16 Device fault signal

Enter On/Off menu, use “+”,

“-”keys to operate. The

corresponding terminals

should be connected.

B31-B32 and B34-B35 are

normal open terminals that

should be closed.

B17-B18 Block this side backup power

B19-B20 Starting fan

B21-B22 Trip this side section breaker

B23-B24 Trip this side breaker

B25-B26 Trip other side breaker 1

B27-B28 Trip other side breaker 1

B29-B30 Composite voltage output1

B31-B32（normal open） Composite voltage output 2

B32-B33

B34-B35（normal open） Block voltage regulation

B35-B36

A22-A23 Remote close output




A22-A24 Remote open output




4. Operation instructions

5.1 Control panel of device

128*64 matrix LCD (The LCD will go off after a period of absence of keyboard operation;

the LCD will be illuminated automatically when any key is pressed or in case of

protection trip or alarm.)

Signal indicator: run, communication, operation, alarm, body, fault (device fault).

Circuit breaker state indication: indicating the current state of the circuit breaker (“Open”,

“Close” position indication)

Key pad: ，，，， Cancel, -, +, Enter, Revert

The 6-bit nixie tube displays the primary measuring value in real time: Ia, Ib, Ic, Uab, Ubc,

Uca, P, Q, Cosφ(Please set the PT, CT transformation ratios properly in the System

Parameters menu). The maximum display range is 99999.

Note：Measuring Ia：AA，Measuring Ib：bA, Measuring Ic：CA

Voltage Uab：AbkV，Voltage Ubc：bCkV，Voltage Uca：CAkV

Active power：PkW，Reactive power：qkvar，Power factor: H

5.2 Instructions for use of key pad and LCD display

During the device’s normal operation, it will display the measuring current, power,

time in cycle. Press the “Enter” key to enter the main menu, which is a multi-level tree

menu. Press the ““, ““ keys to move the cursor to the desired entry, press the “Enter”




key to enter this entry, and press the “Cancel” key to return to the next higher level of

screen. If this screen is still a menu, continue to press the ““, ““ key to select the

desired entry, press the “Enter” key to enter the next level of screen, and press the

“Cancel” key to return to the next higher level of menu. If there is no menu screen, be sure

to press the “Cancel” key to return to the next higher level of menu. The main menu is

shown at the center of the following figure, with the corresponding submenus on both

sides..

The main interface displays the primary operating parameters in turn. The maximum

displayed current is 6000.0A. For systems with a rated current of 5A, the set CT

transformation ratio shall not exceed 2000.Primary display power unit will be MW, when

the power is higher than 1000kW, otherwise it is kW

5. System Parameters

（Note 1）

Setting Zone No.

Comm. Setting

B. Parameters

D/A Setting

Integral Energy

Trip Times Clear

Output matrix

Type：MTPR-650Hb(Note 3）

Ver ： V□.□□.□□ Date: 20□□-□□-□□

□□□CRC ：□□□□□□□□H

Main menu

1. State Display

2. Signal Revert

3. Report Display

4. Output Test

5. SYS Parameter

6. Setting Value

7. Clock Setting

8. Password

9. Version Info

1. State display

Protection Data

Measuring Data

Binary Input

Integral Energy

Phase Angle

Harmonic Data

DC Input Date

Trip Times

3. Report Display

Trip Report

Binary Report

Event Report

Report Clear

6．Settings（note 2）

Protecion on/off

......

Note: See protection

setting table for….

4．Output Test

Device Failure

Local Lock

Startup Cooling

Trip Native

Trip Native SW

Trip Other SW 1

Trip Other SW 2

Comp. V Out 1

Comp. V Out 2

V Adjudt Lock

Remote Close

Remote Trip

Operate All

7．Clock Setting

Date：□□-□□-□□

Time：□□:□□:□□

8．Input Password

□□□□

2. Signal Revert

Enter




Note 1：Basic parameters in system parameters and D/A setting are different according

to devices, see device description for details.

Note 2：See protection setting table for detailed setting menus.

Note 3：Corresponding to 103, 104version, program shows 103CRC, 104CRC

respectively.

State Display

【State Display】menu contains 8 submenus, protection data, measuring data, binary

input, pulse energy, phase angle display, harmonic data, DC display, switch open

counting . It is described as follows：

Protection Data ↑↓

Ia = □□□·□□ A

Ib = □□□·□□ A

Ic = □□□·□□ A

Uab = □□□·□□ V

Ubc = □□□·□□ V

Uca = □□□·□□ V

I0 = □□□·□□ A

F = □□□·□□ Hz

......

PT secondary line voltage value

Frequency

Protection CT secondary current value

Zero sequence voltage

Meas. Data ↑↓

IA = □□·□□□ A

IB = □□·□□□ A

IC = □□·□□□ A

Ua = □□□·□□ V

Ub = □□□·□□ V

Uc = □□□·□□ V

P = □□□□·□ W

Q = □□□□·□ var

Cosφ = □·□□□

......

Measuring CT secondary current value

PT secondary phase voltage value, when VV wring mode, not display

Cosine value of the angle between voltage and

current, when －90°<φ<90° COSφ will be positive;

when 90°<φ<270° COSφ will be negative.

Convert to PT, CT secondary active power

Convert to PT, CT secondary reactive power




Note：In the standard configurations, the input circuit of binary input has the connection

to an external 220VDC control power supply. When no DC control power supply or control

system is available on site, but a 110VDC control power supply is available, a 110VDC

control power supply may be used for direct connection through local hardware

adjustment, or the 24V power supply of the device may be used as the input power supply

(when the input common terminal is +24V, terminal number: B14, Terminal B01 is kept

float). However, this must be specified upon ordering

Integral Energy

＋□□□□□□□·□□□kWh

＋□□□□□□□·□□□kvh

－□□□□□□□·□□□kWh

－□□□□□□□·□□□kvh

The device real-time computes time

accumulation of active and reactive power，+ is

positive，- is negative.

Phase Angle ↑↓

Ua=□□□.□□°

Ub=□□□.□□°

Uc=□□□.□□°

Ia=□□□.□□°

Ib=□□□.□□°

Ic=□□□.□□°

IA=□□□.□□°

IB=□□□.□□°

IC=□□□.□□°

......

The angles are with respect to Ua, which default

value is 0°. When it’s V V connection，Ua, Ub, Uc

are changed into Uab, Ubc and Uca）.

Protection current with respect to Ua

Measuring current with respect to Ua

When closed, means energy not storaged

Binary Input ↑↓

Breaker □

Trolley Run □

Trolley Test □

Earth Switch □

Spring □

Other CV □

Input 7 □

Input 8 □

Input 9 □

Input 10 □

......

Description depends on protection device, see

corresponding terminal diagram for details.

When closed, means breaker is closed; when opened,

means breaker is opened. Note: Position of breaker is

relative to protective.

When closed, means trolley is at operating position

When closed, means it is closed

When closed, means trolley is at testing position




Trip Times

Total：□□□□Times

Signal Revert

In the [Signal Revert] menu, press the “Enter” key, the signal relay and the “Operation”

indicator on the panel will be reset.

Report Display

The [Report Display] menu includes 4 submenus, including trip report, remote signal

report, event report and clear report. Event recording includes: device self-check fault,

device setting value modification, system parameter modification and setting zone

number modification, etc. The maximum events can be stored are: 50, 100, and 30.

Beyond this, the latest report will overwrite the earliest one. Press the “Enter” key to enter

the corresponding [To view xx report, please enter report number: 00] menu, and enter

0~99, press the “Enter” key to display the contents of that report. The screen is as follows.

Press key to see the specific operation value. Press the keys and to flip over.

Harmonic ↑↓

2nd ：□□□·□□%

3rd ：□□□·□□%

4th ：□□□·□□%

5th ：□□□·□□%

......

11th r：□□□·□□%

The order of harmonic from 2～11 is selected in

system

DC Input

DC1：□□□·□□mA

DC2：□□□·□□mA External DC input 4~20mA (2-way)

Report No.：□□ ↓

□□□□-□□-□□

□□：□□：□□：□□□

□□□□□□

Year, month, day

Hour, minute, second and millisecond

when it took place

Report content description




Operation values

Output Test

After entering the [Output Test] menu, the correct password is required to enter the

[Output Test] menu. It displays the following：

Press “Enter” key

——————＞

＜——————

Press “Cancel” key

(Note：After the signal relay closes, make sure to press “Revert” key or select “Signal

revert” menu and press “Enter” key to revert the signal relay.When doing output test to the

6 protection outputs, the startup relay will be closed automatically. The “+”, “-” keys are

used for switching between the “On/Off” control).

System Parameters

After entering the [SYS Parameters] menu, the correct password is required to enter

the [SYS Parameters] menu. It displays the following：

4． Output test ↑↓

Device Failure

Local Lock

Startup Cooling

Trip Native

Trip Native SW

Trip Other SW 1

Trip Other SW 2

Comp. V Out 1

. . . . . .

Operate All

Device fault signal

On Off

Ia = □□□·□□ A

Ib = □□□·□□ A

Ic = □□□·□□ A

I0 = □□□·□□ A

U2 = □□□·□□ V

U0 = □□□·□□ V

Ua = □□□·□□ V

Ub = □□□·□□ V

Uc = □□□·□□ V

......

5．Parameters ↑↓

Setting Zone No.

Comm. Setting

B.Parameters

D/A setting

Integral Energy

Trip Times Clear

Output Matrix




Com. Setting ↑↓

RS485 device address

□□

RS485 baud rate

□□

IP address

Subnet mask

K W default value

Setting zone number setting: range 00~07.

Communication settin

Setting of basic parameters

D/A setting

The device has two 4~20mA outputs. The DA1~DA2 adjustment factor is used to

adjust the accuracy of the channel output. The DA1~DA2 channel selection is used to

select the corresponding analog quantity channel (see the description of the protection

device for specific reference quantities). In the accuracy test, make sure the field ground

is in good contact; otherwise the accuracy might be affected.

Integral energy setting

The initial value of energy can be set including: positive active energy, positive

reactive energy, negative active energy and negative reactive energy.

Clear trip count

Communication address of device 01～99

00：2.4KB；01：4.8KB；02：9.6KB；03：19.2KB；

04：38.4KB；05：115.2KB；

Setting CT rated secondary current 00：5A；01：1A

Setting PT ratio：1～1500

Setting CT ratio：1～5000

B. parameters ↑↓

Rating Current

□□

PT ratio

□□□□

CT ratio

□□□□

PT wring mode

□□

Harmonic Channel

□□

Wave Record

□□

......

Setting PT secondary wring mode 00：Y-Y；01：

V-V

Setting the harmonic analog channel to be monitored

0～7，select 0 to quit harmonic calculation function

Setting fault recorder on/off 0～1，select 0 to quit fault

recorder function




Clearing statistical count of trip.

Settings

After entering the password, you can enter the [Setting Value] menu. See the

setting description of the protection device for the detailed description.

Clock Setting

A battery-back real-time clock is provided in the device, which can perform time

adjust remotely via the communication network or in-site time adjust in the [Clock Setting]

menu.

Enter this menu and press the “Enter” key, the clock will stop

refreshing and a cursor will appear. Move the cursor to the

desired position for modification by pressing the ““,

““ keys, modify to the desired value with the “+”, “-” keys.

Press the “Enter” key to complete setting. If the “Cancel”

key is pressed, the setting will be cancelled and the screen

continues to refresh the clock.

Password

The [Password] menu is used to modify the password for entry into the Settings,

System parameters and Output Test submenus. The initial password is provided by the

factory. The universal password is “1000”.

Move the cursor to the desired position for modification by

pressing the ““, ““ keys, modify to the desired password

with the “+”, “-” keys. Press the “Enter” key to enter the new

password setting menu as above; press the “Cancel” key to

cancel the setting.

GPS clock synchronization

The GPS clock synchronization signal is input as rs485 differential voltage, the

device is able to receive GPS clock minute synchronization (or second synchronization). If

there is GPS signal, there will be and flashing on the bottom of cycle menu;

otherwise won’t.

The principle of GPS clock synchronization: The second pulse or minute pulse act

with the monitoring system, the time base with second precision is sent by monitoring

system, when the GPS second differential signal arrives, the time base is unified and the

milliseconds are cleared..

Version Information

In the main menu, after entering the [9. Version Info.] menu, the model, software

7. Clock Setting

Date：20□□－□□－□□

Time：□□：□□：□□

Input Password

0 0 0 0




Fig 6-1

MTPR-650Hb

D1(3,5)

D2(4,6) A01

D17

D19

D21 A02

D18(20,22)

14(16,18)

Ia’(Ib’, Ic’)

Ia(Ib, Ic)

Ua

Ub Power supply

Uc

Ua’(Ub’, Uc’)

version and date of the device will be displayed.

Note: For a corresponding nonstandard model, the device’s displayed model does not

have to be changed.

5. Check of protection function

6.1 Check of over-current protection

Over-current protection can be divided into three sections and each section can

be set as On/Off. All are based on the same principle. Take the example of

over-current section I, wire as Fig 6-1，set over-current section I protection to on, set

over-current section I direction to on and set over-current sectionI composite voltage

block to on, set hard strap protection to off（when in on, over-current protection strap

C15 should be connected）.

Set according to the following table. Measure the operating current and take down in

the following table. When over-current section I operates（delay has T1, T2, T3）, the

corresponding terminals should be connected according to output matrix.

Add phase

A current Ubc,

add voltage

30V, voltage

phase as

reference，

check the

operating zone.

Over-current

section I setting（A） 1ln 2ln 5ln 10ln

Operating value

Operating zone

Add phase

B current Uca,

Over-current

section I setting (A) 1 ln 2 ln 5 ln 10 ln




add voltage

30V, voltage

phase as

reference，

check the

operating zone

Operating value

Operating zone

Add phase

C current Uab,

add voltage

30V, voltage

phase as

reference，

check the

operating zone

Over-current

section I setting (A) 1 ln 2 ln 5 ln 10 ln

Operating value

Operating zone

Instantaneous

over-current

protection

setting is 5A，

Add current

6A

Low voltage

setting(V) 20 40 60 80

Low voltage

block value

Negative sequence

voltage setting( V) 5 10 15 20

Negative voltage

block setting

6.2 Check of Zero sequence voltage alarm

Zero sequence voltage alarm is judged by Zero sequence voltage. Wire as Fig 6-2，

set Zero sequence voltage alarm to on.

U0

U0’

Power supply

MTPR-650Hb

D23 A01

D24

A02

Fig 6-2





the following table. When zero sequence voltage alarm operates, the corresponding

terminals should be connected according to output matrix（factory fault of output matrix is

0）.


setting(V) 60 100 120 180


delay(s) 5 4 2 1


operating value(V)


operating time(s)

6.3 Check of Bus charging protection

Bus charging protection is judged by the maximum phase current. Wire as Fig

6-3，set Bus charging protection to on, set hard strap function to off（when in on，

charging protection strap C14 should be connected）.

According to binary input checking method, let the breaker position B02 change

from open to close. The bus charging protection is effective during on time. When

exceeding on time, the bus charging protection is automatically off.

Set according to the following table. Measure the operating current and take down

in the following table. When over-load alarm operates, the corresponding terminals

should be connected according to output matrix.


current setting (A) 1ln 2 ln 5 ln 10 ln

Bus charging protection 6 5 3 1

Ia(Ib, Ic)

Ia’(Ib’, Ic’)

Power supply

MTPR-650Hb

D1(3,5) A01

D2(4,6)

A02

Fig 6-3




delay setting(s)

Bus charging protection on

time (s) 3 3 3 3


operating value (A)


operating time(s)

6.4 Check of zero sequence over-current protection

Zero sequence over-current protection is judged by zero sequence current. Wire as

Fig 6-4，set zero sequence over-current protection to on.


the following table. When zero sequence over-current protection operates, the

corresponding terminals should be connected according to output matrix.

Zero sequence

over-current setting (A) 1 2 5 10

Zero sequence

over-current delay(s) 5 4 2 1

Zero sequence

over-current operating

value(A)

Zero sequence

over-current operating

time(s)

I0

I0’

Power supply

MTPR-650Hb

D07 A01

D08

A02

Fig 6-4




6.5 Check of over-load protection

Over-load protection is judged by the maximum phase current. Wire as Fig 6-5，set

over-load to on.

Set according to the following table. Measure the operating current and take down

in the following table. When over-load alarm operates, the corresponding terminals

should be connected according to output matrix.

Over-load setting(A) 5 10 15 20

Over-load delay(s) 10 5 2 1

Over-load operating value(A)

Over-load operating time(s)

6.6 Check of PT, CT Failure

Wire as Fig 6-1，simulate PT failure or CT failure，the device will send alarm signal

and the alarm light will lit.

The checking method of other protection functions such as starting fan, block voltage

regulation, composite voltage block output is easy. We are not going to elaborate it here;

users may refer to "device function" section of this manual.

Ia(Ib, Ic)

Ia’(Ib’, Ic’)

Power supply

MTPR-650Hb

D1(3,5) A01

D2(4,6)

A02

Fig 6-5




Appendix 1：Device terminal diagram

(+24V)

Input 7

D26

D28D27

D25 DCSIn1+

DCSIn1-

DCSIn2-

DCSIn2+

Note:

1.Ia1,Ib1,Ic1 are protection

currents.

2.IA,IB,IC are measure

currents.

3.I0 is zero sequence current.

4.Ua,Ub,Uc,U0 are voltages.

5.DCSIn1～2 are 2-way 4～20mA inputs.

6.DCS1～2 are 2-way 4～20mA outputs.

7.COM1 and COM2 are 485 interfaces, Net1 and Net2 are

ethernet ports.

8. Whether +24V on IO board is the standard configuration or not can be fixed when using internal +24V as feeder.

Uc Uc'

U0 U0'

Input 10

Input 9

Input 8

Ub'Ub

Ua'Ua

IC'IC

D02

D04

D06

D08

D10

D12

D14

D16

D18

D20

D22

D24

I/OPOWER

B01B02

ON B06B05B04B03

IaD01

IbD03

IcD05

IB

D07

OFFB10

B08B09

B12

B14

B13

B11

B07

A02

A01

I0

D09

D11 IA

D13

D15

Power off

Power off

B17B18

B16

B19

B21B20

D17

D19

D21

D23

B23B24B25B26B27B28B29

B22

A04

A06A05

B15A03

B30B31

B32

B34B35B36

B33

CPU

Ia'

Ib'

Ic'

IA'

AC

I0'

IB'

COM2A

COM2A

COM2B

COM2B

Deb

ug

COM2

COM1

Net2

Net1

Run

C13

C17

DCS2+C19C20 DCS2-

C18 DCS1-

C16DCS1+

C14C15

C12

C10C11

COM1B

C08

C09

COM1B

COM1A

C06

C07

COM1A

C02

C04C05

C03

GPSB

GPSAC01

A21

A23A24

A22

A19

A20

A18

+WC

-WC

Trip coil

A10

A17A16A15A14A13A12A11

A08A09

A07

Closure coil Input 13

Input 14

Input 11

Input 12

Terminals diagram of MTPR-650Hb microcomputer transformer backup protection

measuring and control device




Appendix 2：Device typical wiring diagram

(+24

V)

Blo

ck

back

up p

ow

er

auto

-sw

itchin

g o

f th

is s

ide

WC

WC

CP

U plug-ins

Po

wer

AC plug-ins

plug-ins

WC

WC

MTPR-650Hb transformer backup protection device

Debugging port

Ethernet port

AC plug-ins

I/O plug-ins

I0'I0Ic'IcIb'IbIa'Ia

Operation circuit

disconnected

Power supply+

Power off

Shielded ground

Power supply-

Trip position

Closure

position

Closure position

monitor

Trip coil

Trip position

monitor

Closure coil

-WC

Remote control

common portRemote control

closureManual closure

input

Remote control trip

Manual trip input

+WC

Input 12

Input 11

Input 10

Input 8

Input 9

Input 7

Sp

rin

g e

nerg

y

no

n-s

tora

ged

Gro

un

de

d c

utter

positio

n

Trolley

test

position

Tro

lley w

ork

ing

po

sitio

n

Bre

aker

positio

n

Input

co

mm

on

port-

GPSA

GPSB

Input 13

Input 14

Input common(＋24V)

COM A

COM A

COM B

COM B

COM A

COM A

COM B

COM B

DCSOut1+

IA IA' IB IB'Ua Ua' Ub Ub' Uc Uc' U0'U0

Bre

ake

r

Charged protection

plate

Over-current protection plate

DCSIn1+

DCSOut1-

DCSOut2+

DCSOut2-

DCSIn2+

IC'IC

Co

mp

ou

nd

vo

lta

ge

of

the

oth

er

sid

e

Note:

1.ZK(remote/local switchover switch) and KK(manual operation switch) in the diagram are installed on the plate of panel, and

when using remote/local switchover switch and manual operation button of device panel, terminal A21 would be put in +KM. 2.PT secondary in the diagram is wye-connection, and when it is V－V connection on site, terminals D15,D20 would be connected

with phase A of PT secondary, terminals D16,D17 with phase B of PT secondary, terminals D18,D19 with phase C of PT secondary.

Bus voltage Measuring current

DCSIn2-

DCSIn1-

Block backup power

auto-switching of

this side

Ethernet port

Net 1

Net 2

Shielded ground

Zero sequence

voltage Protection currentZero sequence current

Standby

Device fault signal

De

vic

e f

au

lt sig

na

l

Trip

se

ctio

n o

f

this

sid

e

Start wind

cooling

Start wind

cooling

Trip section

of t

his side

Trip section

of t

his side

Trip section

of t

his side

Trip

sw

itch

1 of

the

oth

er side

Trip

swit

ch 1 of

the

other side

Trip

switch 2 o

f th

e ot

her side

Trip

switch 2

of

the

other side

Co

mp

ou

nd

vo

lta

ge

ou

tpu

t 1

Compound voltage

output 2

Compound voltage

outp

ut 1

Compound voltage

output 2

Block voltage regulator

norm

ally

open

Block voltage

regulator

com

mon

Block voltage regulator

norm

ally

clo

sed

MTPR-650Hb transformer backup protection device typical wiring diagram




Appendix 3： Operation circuit of MXPR-600Hb series device

Traditional operating circuits are started by current, while a voltage maintaining circuit

realizes electric trip prevention. An anti-trip relay will be selected depending on the current

of the trip/closing circuit of the circuit breaker. However, this has poor generality and can

hardly be realized for circuit breakers with low trip and closing currents (such as 10KV

circuit breakers from AEG Company in Germany, whose trip and closing currents are not

greater than 0.2A). To simplify wiring and design finalization, and to improve the generality

of the product, we offer a new operating circuit shown below..

TBJ2

TBJTCJ1

SHJ

YTJ

HBJA20

HBJ

Trip output

TCJ2

STJ

STJ

1LP

JnTn3

Tn4

HWJ

A10TWJ

A09

Manual trip

DL

A13HWJ

TWJ

A08TWJ

A12HWJ

A14

A20

A07

A11

TCJ

SHJ

TBJ1

Tn2

A24

Tn1

Jn

A22

YHJ

A18

A19

A17

A23

A15

Clo

su

re c

ircu

itT

rip

circu

it

Fuse

Small bus

TQDL

HQDL

KK84 5

ZK2

2LP

7KK

686ZK

3ZK

1

A16

closureProtection

Schematic diagram of operating circuit




In the diagram, KK is the traditional operation switch used for manual trip/closing

operation. ZK is the shift switch used for shift between local and remote control. When ZK

is in the “Remote” position, the remote control circuit power will be connected, i.e.,

Terminal A22 of the device is connected to +KM, while the manual operation circuit power

will be cut off and manual closing and manual trip won’t work. On the contrary, when ZK is

in the “Local” position, the manual operation circuit power will be connected, while the

remote control circuit power will be cut off.

Note: In the dotted frame, there is the internal circuit of the protection device. All of our

devices marked with “anti-trip circuit” are designed according to this operation circuit.

Terminals Tn1, Tn2 corresponding to protection relay Jn are determined by the

corresponding protection output control word. Jn can be any one or more of Protection

outputs 1-8.

Whether in local control or in remote control, jump phenomenon occurs on the

premise that terminal A15 of the device is always connected with +WC. After manual or

remote closing, if a short-circuit fault occurs, the protection will operate to trip the circuit

breaker. Though Terminal A15 of the device is connected with +WC. The closing circuit is

disconnected by TBJ1. Therefore, the circuit will not be closed again. The circuit breaker

jump phenomenon can be effectively avoided in this way.

Back-up Transformer Protection Relays

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Transcript of Back-up Transformer Protection Relays