Beluk KSR 1 Reference Manual

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Reference Manual

Capacitor Bank Protect. Relay KSR1

Reference Manual

Rev. 10

2018-09

Beluk GmbH

Taubenstrasse 1

D-86956 Schongau

Germany

Capacitor Bank Protection Relay

KSR1

Tel.:

Fax:

E-Mail:

http://www.beluk.de

+49/(0)8861/2332-0

+49/(0)8861/2332-22

[email protected]

Reference Manual

Capacitor Bank Protect. Relay KSR1

Revision history

Date

30.06.10

07.09.10

02.12.10

02.03.11

29.11.11

26.11.12

09.09.13

20.04.16

15.02.18

18.09.18

ChP

SMi

Name

Revision

Change initial document release

Editorial changes, Add technical data’s

Add changed menu points.

Add additional explanations

Content update

Change factory settings

Add dimension drawing

Update current measurement

DQS-Logo removed

Layout changes

Rev. 10

2018-09

Reference Manual

Capacitor Bank Protect. Relay KSR1

Rev. 10

2018-09

Content

1 OVERVIEW ....................................................................................................................................................................... 4

2 APPLICATION.................................................................................................................................................................... 5

2.1 Monitoring unbalance voltage ...................................................................................................................................... 5

2.2 Monitoring unbalanced current ................................................................................................................................... 5

3 OPERATION ...................................................................................................................................................................... 6

3.1 Power supply ................................................................................................................................................................ 6

3.2 Inputs ............................................................................................................................................................................ 6

3.2.1 Measurement input ............................................................................................................................................... 6

3.2.2 Blocking input ........................................................................................................................................................ 6

3.3 Outputs ......................................................................................................................................................................... 7

3.3.1 Trip relay ................................................................................................................................................................ 7

3.3.2 Alarm relay ............................................................................................................................................................. 7

3.3.3 Relay 3.................................................................................................................................................................... 7

3.3.4 “Status” relay ......................................................................................................................................................... 7

3.4 User Interface ............................................................................................................................................................... 8

3.4.1 Keys ........................................................................................................................................................................ 8

3.4.2 Display .................................................................................................................................................................... 8

3.4.3 Input of numerical values ...................................................................................................................................... 9

4 MENUS ........................................................................................................................................................................... 10

4.1 Info .............................................................................................................................................................................. 10

4.2 Setup ........................................................................................................................................................................... 11

4.2.1 Start menu Password 242 .................................................................................................................................... 11

4.2.2 Expert menu Password 511 ................................................................................................................................. 14

4.3 Alarm .......................................................................................................................................................................... 17

5 TECHNICAL DATA KSR1 .................................................................................................................................................. 18

6 MENU OVERVIEW .......................................................................................................................................................... 19

7 DIMENSIONS .................................................................................................................................................................. 20

8 SETTINGS ........................................................................................................................................................................ 21

Reference Manual

Capacitor Bank Protect. Relay KSR1

Important Information!

Rev. 10

2018-09

If this sign appears besides a text passage, the reader is strongly advised to read the corresponding information, because it is very important for the device’s usage! It can indicate safety advices or information for the correct handling of the device. If the information is disregarded, the device may become inoperable or even damaged!

1 Overview

The KSR1 is designed to monitor medium and high voltage capacitor banks. The KSR1 can be set to monitor current or voltage, selectable in the menu. The device can monitor two threshold levels for Alarm / Trip. All thresholds / readings can be either a current or voltage value or a percentage setting of the maximum value. Once the Alarm or Trip level is reached, the appropriate relay will operate after the programmed delay time has elapsed. Both relays can be programmed to stay in the Alarm/Trip position until a reset is performed by the user. If it is required, alternatively they can be set to reset automatically, if the fault is cleared. A further relay can be used to signalize that an Alarm/Trip or both Alarm+Trip have been occurred. The KSR1 provides details of the last 5 Alarm and Trip operations.

The KSR1 uses absolute values. For this reason, shown values are always positive independent of their actual direction

(meas. value increases / decreases).

Simplified diagram

Measured value

– Natural unbalance

= Value

Comparator

Value > limit

Yes

Delay time

Alarm / Trip

Yes

Monitoring blocked via DI1 & DI2

Adjusted threshold

Alarm / Trip

Adjusted delay time for Alarm / Trip

Switch output relay

Relay 1 TRIP

Relay 2 ALARM

Relay 3 progr.

Reference Manual

Capacitor Bank Protect. Relay KSR1

2 Application

Rev. 10

2018-09

The most of the high- and medium voltage capacitors use oil as dielectric, which can catch fire in case of a failure. For this reason, it is recommended to monitor capacitor banks during operation, in order to detect failures earlier.

Using the KSR1, there are two possible ways to set up a monitoring system. Here, either an unbalance current or an unbalance voltage can be measured to detect a faulty capacitor bank.

2.1 Monitoring unbalance voltage

2.2 Monitoring unbalanced current

Reference Manual

Capacitor Bank Protect. Relay KSR1

3 Operation

Rev. 10

2018-09

3.1 Power supply

The KSR1 can be supplied by 40 – 250 V AC (45 – 65 Hz) or 40 – 300 V DC.

! Attention: The power supply must be connected as it is depicted on the rear side of the device. A wrong connection can cause malfunctions or can damage the device.

3.2 Inputs

3.2.1

Measurement input

The KSR1 has a voltage input as well as a current input. Here, the possible voltage range is 0,1 – 20 V and the measurement range at the current input is 15 mA – 5 A. Both ports can be used for monitoring purpose, but it is not possible to use both inputs parallel!

3.2.2

Blocking input

All monitoring functions can be blocked via inputs DI1 and DI2. This is discussed in more detail later.

Reference Manual

Capacitor Bank Protect. Relay KSR1

3.3 Outputs

The KSR1 has 4 relay outputs.

Rev. 10

2018-09

Trip

See 3.3.1

3.3.1

Trip relay

Alarm

See 3.3.2

Rel3

See 3.3.3

Status

See 3.3.4

The trip relay operates with the change-over contacts 11-12/14. The contacts 11-12 are normally closed and 11-14 are normally open (no trip condition). In case, the trip trigger value (voltage or current) is exceeded for a longer period than

, the contacts 11-14 will close and 11-12 will open.

3.3.2

Alarm relay

The trip relay operates with the change-over contacts 21-22/24. The contacts 21-22 are normally closed and 21-24 are normally open (no alarm condition). In case, the alarm trigger value (voltage or current) is exceeded for a longer period than , the contacts 21-24 will close and 21-22 will open.

3.3.3

Relay 3

The programmable relay can be set to work with alarm, trip or both. Under normal conditions (no trip, no alarm), the contacts 31-32 are closed and 31-34 open. In an alarm / trip situation, the contacts 31-34 will close and 31-32 will open.

3.3.4

“Status” relay

The KSR1 supervises its internal modules and software. If an internal malfunction is detected, the relay will open the contacts 41-44 and closes 41-42. Additional to the relay contact, the display shows “SyS” or “Prog”. The “status” relay is a life contact, in case of missing power supply the contacts 41-42 closes and contact 41-44 opens.

Reference Manual

Capacitor Bank Protect. Relay KSR1

3.4 User Interface

3.4.1

Keys

 Escape menu,



Move cursor left

 Push for 3 sec to clear trips/alarm

Increase values

Select menu items

Decrease values

Select menu items

3.4.2

Display

Rev. 10

2018-09

 Enter menu



Move cursor right

 Confirmation of an input

The right side of the display shows the actually chosen main menu items.

The top line of the display shows the codes for submenus and abbreviation for measurement values.

The second line of the display indicates the values for settings and measurement values.

The bottom line of the display indicates which output relays are in active state.

Reference Manual

Capacitor Bank Protect. Relay KSR1

3.4.3

Input of numerical values

Rev. 10

2018-09

For configuration purpose, the input of values is required. By doing this, the routine is always the same, which is why the following section describes the necessary steps in general.

A preset-value will be displayed with the first (highest) digit blinking. This digit can be changed by using the keys  and

 . In order to change to the next (smaller) digit the button  must be pressed. Now, the next digit blinks and its value can be altered in the same way as before. When arriving the last digit, press the  key once more. This position allows to set multipliers M (Mega) or k (kilo). To store the value, press the  key once more, and the new value will be saved and used.

For the case, that an adjusted value cannot be stored another value is shown after confirmation with button  . A possible reason can be that the entered value is outside of the allowed range. Information about the input ranges is given in the table on the penultimate page of this document.

At any time, one can go back to the menu he came from without changing the value by pressing the  key. In this case, the modified value will not be used!

Reference Manual

Capacitor Bank Protect. Relay KSR1

4 Menus

Rev. 10

2018-09

4.1 Info

The main menu "INFO” contains all information’s about the adjusted thresholds, delay times for trip/alarm and the stored natural unbalance. In the Info menu, it is not possible to change any values. To enter this menu use the button  to select “Info” and enter the menu with

 . Submenus can be selected by  and  .

Displays the stored value of the natural unbalanced current.

Displays the adjusted threshold for trip.

Displays the adjusted time delay for trip

Displays the adjusted threshold for alarm.

Displays the adjusted time delay for alarm.

Displays the software version of the device.

Displays the state of digital input. Possible readings are:

Blocking the monitoring system via DI1 and DI2 is switched off.

Terminals DI1 and DI2 are open.

Terminals DI1 and DI2 are closed.

The monitoring system can be blocked by the digital input. The corresponding settings are explained in the next chapter

and .

Reference Manual

Capacitor Bank Protect. Relay KSR1

4.2 Setup

Rev. 10

2018-09

The main menu “Setup” is split into two menu levels:

 Level 1 is the “start menu”, it contains settings to commission the KSR1.



Level 2 is the “expert menu”, it contains the complete range of settings. This menu is protected by an additional password.

4.2.1

Start menu Password 242

To enter this menu, use the  button to select “Setup” and confirm the selection by pushing

 . To enter the menu use password (242). The menus can be selected by  and  , and entered by  .

This menu allows to set the natural unbalance for current or voltage of the monitored capacitors. To store an entered value push the button  . The second line of the display starts blinking and shows the actual measured value. To store the shown value push the button  again. To set a new value of the natural unbalance push the  button again. The stored value of the natural unbalance is shown in the “Info” menu. The natural unbalance is evaluated as absolute value. Thus, a drop below the stored value is also shown and evaluated as an increase.

Here, the trip threshold is set. The threshold can be set in a range of 0,2 – 20 V for voltage and 20 mA – 5 A for current 1 .

It is also possible to set the threshold by a percent value, which refers to the related nominal range of current or voltage.

In factory setting, the absolute value has to be set.

Attention: This value is adapted automatically by subsequent changes of the transformer ratio.

The input can be changed to percent in menu under .

When using a VT / CT the set thresholds are multiplied by the adjusted transformer ratio.

Reference Manual

Capacitor Bank Protect. Relay KSR1

Rev. 10

2018-09

This submenu set the trip delay time. In case, the trip trigger value (voltage or current) is exceeded for a longer period

, contacts 11-14 will close and 11-12 will open. than

Here, the threshold for an alarm can be set. The threshold can be set in a range of 0,2 – 20 V for voltage and 20 mA – 5

A for current 2 . It is also possible to set the threshold by a percent value, which refers to the related nominal range of current or voltage. In factory setting, the absolute value has to be set.

! Attention: This value is adapted automatically by subsequent changes of the transformer ratio.

The input can be changed to percent in menu under .

Sets the delay time for alarm. In case, the alarm trigger value (voltage or current) is exceeded for a longer period than

, the contacts 21-24 will close and 21-22 will open.

The trip relay output can be configured as either latch able or non-latch able output.

The trip relay goes back to inactive state as soon as the trip value falls below the adjusted threshold.

The trip relay remains in active state even when the trip value falls below the adjusted threshold. To reset the relay, push the Button  for 3 sec. After a brownout, the relay falls back into the state before the brownout.

When using a VT / CT the set thresholds are multiplied by the adjusted transformer ratio.

Reference Manual

Capacitor Bank Protect. Relay KSR1

Rev. 10

2018-09

The alarm relay output can be configured as either latch able or non-latch able output.

The alarm relay goes back to inactive state as soon as the alarm value falls below the adjusted threshold.

The alarm relay remains in active state even when the alarm value falls below the adjusted threshold.

To reset push the Button  for 3 sec. After a brownout, the relay falls back into the state before the brownout.

The relay 3 is free to program to become active state with trip, alarm or both. Following settings are possible: relay 3 is always switched off relay 3 becomes active with alarm relay relay 3 becomes active with trip relay relay 3 becomes active with trip and alarm relay relay 3 becomes active with trip or alarm relay

The relay 3 output can be configured as either latch able or non-latch able output.

The trip relay 3 goes back to inactive state as soon as the trip / alarm value fall below the adjusted threshold.

The trip relay 3 remains in active state even when the trip / alarm value falls below the adjusted threshold. To reset push the Button  for 3 sec. After a brownout, the relay falls back into the state before the brownout.

Reference Manual

Capacitor Bank Protect. Relay KSR1

Rev. 10

2018-09

4.2.2

Expert menu Password 511

To enter this menu select “Setup” and enter the expert password (511). Select submenus 100 – 400 by using  and  .

Enter the submenus by pushing  .

4.2.2.1 Start menu

Contains the same settings as start menu above.

4.2.2.2

Measurement menu

Current measuring

The KSR1 measures the current at input K and L. Trip and alarm thresholds are given in A or in percentage of the nominal input range.

The KSR1 is measuring the voltage at input UM1 and UM2. Trip and alarm thresholds are given in V or in percentage of the nominal input range.

Values in percent

All values are shown in percentage. The thresholds for voltage or current are set in percentage of the nominal value of the input.

All values are shown as absolute value. The thresholds for voltage or current are set as absolute value.

! Attention: A previous adjusted Transformerratio become set to 1 when altering this item.

Transformer factor

Voltage: adjustable VT ratio from 1-350.

Current: adjustable CT ratio from 1-4000.

Frequency

Here, it is possible to adjust the mains frequency. Possible settings are 50 Hz and 60 Hz. The frequency setting should be correct otherwise the measurement does not work proper.

Reference Manual

Capacitor Bank Protect. Relay KSR1

4.2.2.3

Alarm menu

Trip active

Rev. 10

2018-09

When exceeding the adjusted threshold for trip, the trip relays switches and the message

blinks on the display.

An exceeding of the trip threshold is ignored.

Store trip in “Alarm buffer”

Trips are stored with the trigger value in the “Alarm buffer”.

Trips are not stored.

Alarm active

When exceeding the adjusted threshold for trip, the trip relays switches and the message

blinks on the display.

An exceeding of the trip threshold is ignored.

Store alarm in “Alarm buffer”

Alarms are stored with the trigger value in the “Alarm buffer”.

Alarms are not stored.

Drop off ratio (hysteresis)

It is possible to set the hysteresis to 50% – 100% of the adjusted thresholds for current and voltage. The “drop off ratio” defines the threshold, which resets a trip or an alarm when the measured value falls below the adjusted threshold. For example:

Case 1: Threshold for trip is 0.5 A and “drop of ratio” is 100% => trip is reset when the current falls below 0.5 A.

Case 2: Threshold for trip is 0.5 A and “drop of ratio” is 50% => trip is reset when the current falls below 0.25 A.

Reference Manual

Capacitor Bank Protect. Relay KSR1

! direction (meas. value increases / decreases).

Rev. 10

2018-09

The KSR1 uses absolute values. For this reason, shown values are always positive independent of their actual

Digital input active

the monitoring system can be blocked via the digital input. the monitoring system cannot be blocked via the digital input.

Digital input open or closed

monitoring system is blocked when terminals DI1 & DI2 are closed. monitoring system is blocked when terminals DI1 & DI2 are open.

Attention: The digital input is activated or deactivated by opening or closing the contact DI1 and DI2. Connecting a voltage signal can destroy the KSR1.

4.2.2.4

Reset menu

reset trip

reset alarm

reset stored alarms and trips

reset natural unbalance reset the device to factory settings. change password “setup”. Possible adjustment 000-999. Master password 242. change password “expert”. Possible adjustment 000-999. Master password 511.

To switch off the password protection, set to 000.

Reference Manual

Capacitor Bank Protect. Relay KSR1

4.3 Alarm

Rev. 10

2018-09

The submenu “Alarm” contains the last 5 trips and the last 5 alarms. The alarms and trips are stored together with the value, which has triggered the event. The alarm storage is a ring buffer, which means an upcoming trip/alarm deletes the oldest event if the buffer is full. It is also possible to clear all trips or alarm in menu 400 “Reset menu”.

To select the “Alarm” menu, the button  is used. In order to enter the menu  has to be pushed. Select the events by pushing the buttons  and  .

Reference Manual

Capacitor Bank Protect. Relay KSR1

5 Technical Data KSR1

Auxiliary voltage

Voltage measuring

Current measuring

Relay outputs

Digital input

Interface

Ambient temperature

Humidity

Overvoltage class

Standards

Conformity and listing

Terminals

Casing

Protection class

Weight

Dimensions

Rev. 10

2018-09

40 – 250 V AC, 45 – 65 HZ / 40 – 300 V DC, 5 VA; max. fuse 6 A

0,1 – 20 V; burden 284 kOhm; vt-ratio from 1 – 350, with low pass filter

Continuous overload: 120 V

Short term overload: 500 V for ten seconds

Accuracy: 0.5 % from upper range value

15 mA – 5 A; burden 20 mOhm; ct-ratio from 1-4000, with low pass filter

Continuous overload: 25 A

Short term overload: 100 A for one second

Accuracy: 0.5 % from upper range value

4 output relays, change over contact, potential-free, max fuse 6 A

Function:

Relay 1: Trip

Relay 2: Alarm

Relay 3: Adjustable: Alarm, trip or both

Relay 4: Status

Max. output rating AC: 1250 VA, max switching voltage: 440 V AC

Max. output rating DC (ohmic): 30 V / 5 A; 60 V / 1 A; 110 V / 0,5 A; 220 V / 0,3 A

Blocking Alarm / Trip via digital input.

TTL, rear (optional accessories TTL-USB converter)

Operation: -20 °C – 70 °C, storage: -40 °C – 85 °C

0 % - 95 %, without moisture condensation

II, pollution degree 3 (DIN VDE 0110, Teil 1 / IEC 60664-1)

DIN VDE 0110 part 1 (IEC 60664-1:1992)

VDE 0411 part 1 (DIN EN 61010-1 / IEC 61010-1:2001)

VDE 0843 part 20

(DIN EN 61326 / IEC 61326: 1997 + A1:1998 +A2: 2000)

CE screw-type, max. 2,5 mm 2 front: instrument casing plastic (UL94-VO), rear: metal

Front: IP50, (IP54 by using a gasket), Rear: IP20 ca. 0,65 kg

144 x 144 x 58 mm (h x w x d), cutout 138 +0,5 x 138 +0,5 mm

Reference Manual

Capacitor Bank Protect. Relay KSR1

6 Menu overview

MEAS U / I

In % / V / A

 INFO



Natural unbalance U / I („NU“)





SETUP

242

511

Trip value "trd"

Trip time "trt"

Alarm value "Ald"

Alarm time "Alt"

Software version "Fr"

Di state "dl"

Rev. 10

2018-09

100 

100  Natural unbalance U / I („NU“)

 ALARM

Trip value "trd" 



Trip time "trt"

Alarm value "Ald"

Alarm time "Alt"

Trip latchable "trL"

Alarm latchable "ALL“

Relay 3 "r3"

"tr1"

"tr2"

"tr3"

"tr4"

"tr5"

"AL1"

Relay 3 latchable "r3L"

200  Current / voltage metering "Cur“



Display absolute value or % "Per"

Transformer factor "trF"

300 



Line frequency "Frq"

Trip active "tr"

Store trip in buffer "trs"

Alarm active "AL"

Store alarm in buffer "ALS"

400 

Drop off ratio "dor"

Activate DI "dl"

DI open or closed "dIL"

Reset trip "rtr"

Reset alarm "rAL"

Reset stored alarms "rSE"

Reset natural unbalance "rNU"

Reset to factory settings "rFS"

Password setup "PS"

Password expertmenu "PE"

"AL2"

"AL3"

"AL4"

"AL5"

Reference Manual

Capacitor Bank Protect. Relay KSR1

7 Dimensions

Rev. 10

2018-09

Reference Manual

Capacitor Bank Protect. Relay KSR1

8 Settings

Parameter

Natural unbalanced I “NU"

Trip value "trd"

Trip time“trt”

Alarm value“Ald”

Alarm time“Alt”

Trip latchable“trL”

Alarm latchable“ALL”

Relays 3 „r3“

Relay 3 latchable “r3L”

Current / voltage metering „Cur“

Display absolute value“PEr”

Transformer factor “trF”

Line frequency „Frq“

Trip active“tr”

Store trip in buffer “trs”

Alarm active “AL”

Store alarm in buffer “ALS”

Drop off ratio “dor”

Activate DI “dI”

DI open or closed “dIL”

Password „Setup“

Password „Expert“

Rev. 10

2018-09

Range

20 mA – 5 A / 200 mV – 20 V 3

0,1-100 s

20 mA – 5 A / 200 mV-20 V 3

0,1-100 s

CT 1-4000 / PT 1-350

50 / 60

50% - 100%

Factory settings

1 V / 1 A

0,5 s

5 V / 5 A

1,0 s

90%

242

511

Customer settings

When using a VT / CT the set thresholds are multiplied by the adjusted transformer ratio.

Reference Manual

Capacitor Bank Protect. Relay KSR1

Notes

Rev. 10

2018-09

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