Vishay Electronic GmbH Hofmark-Aich-Str.36 D-84030 Landshut Telefon +49 871 86-0 www.vishay.com Document number: 13172 - Rev. 01 _________________________________________________________________________________________________________ Unbalance protection relay ESTAsym CPR Operating instructions _____________________________________________ QUALITY MANAGEMENT Certified by VDE according to DIN EN ISO 9001 Reg. No. 2556/QM/03.94 ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 2 of 22 Revision history Date Name Revision Change 25.08.11 drt 00 initial document release 24.11.11 brm 01 update of content ESTAsym CPR Operating instructions Doc No.: 13172 - Rev. 01 Page 3 of 22 Content 1 GENERAL ............................................................................................................................................. 4 2 APPLICATION ...................................................................................................................................... 6 2.1 Unbalance monitoring voltage .............................................................................................................. 6 2.2 Unbalance monitoring current ............................................................................................................... 6 3 OPERATION ......................................................................................................................................... 7 3.1 Power supply ........................................................................................................................................ 7 3.2 Inputs .................................................................................................................................................... 7 3.3 Outputs ................................................................................................................................................. 8 3.4 User Interface ....................................................................................................................................... 9 4 MENUS ............................................................................................................................................... 11 4.1 Info ...................................................................................................................................................... 11 4.2 Setup ................................................................................................................................................... 12 4.3 Alarm ................................................................................................................................................... 19 5 TECHNICAL DATA ESTASYM CPR .................................................................................................. 20 6 MENU OVERVIEW ............................................................................................................................. 21 7 SETTINGS .......................................................................................................................................... 22 ESTAsym CPR Operating instructions Doc No.: 13172 - Rev. 01 Page 4 of 22 1 General The ESTAsym CPR is designed to monitor medium and high voltage capacitors. The ESTAsym CPR can be set to monitor current or voltage, selectable from 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 % 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 be held in the Alarm/Trip position until reset by the user if required, alternatively they can be set to automatically reset if the fault is cleared. A further relay can be used to operate when the Alarm/Trip or both Alarm+Trip have operated. The ESTAsym CPR can record details of the last 5 Alarm and Trip operations. An natural unbalance (out of balance or asymmetrical value) can be programmed into the device if required. This natural unbalance is subtracted from the measured value and allows a more exactly setting of the thresholds. The ESTAsym CPR is working with unsigned absolute values. Due to this always a positive value is shown. Independent of the direction of the changing (meas. value increase / decrease) always a exceeding of the threshold is given. Simplified diagram Measured value – Natural unbalance = Value No Comparator Adjusted threshold Value > limit Alarm / Trip Yes Adjusted delay time Delay time No for Alarm / Trip Alarm / Trip Relay 1 TRIP Yes Relay 2 ALARM Monitoring blocked Yes via DI1 & DI2 Switch output relay No Relay 3 progr. ESTAsym CPR Operating instructions Doc No.: 13172 - Rev. 01 Page 5 of 22 Important Information! If the above sign appears besides a text passage in the manual the reader is strongly ! advised to read the corresponding information, as it is very important for the device usage! It can contain safety advice or other information for the correct handling of the device. If the information is disregarded, the device may be inoperable or even damaged! ESTAsym CPR Operating instructions Doc No.: 13172 - Rev. 01 Page 6 of 22 2 Application High- and medium voltage capacitors taken into operation must be monitored all the time. Most of these capacitors are manufactured by using insulating oil for the dielectricum, which could catch fire in any case of fail. To avoid this, the capacitors must be monitored to detect failures. This monitoring can be done either by monitoring the unbalance current or unbalance voltage of capacitor groups. However, this voltage / current may change in case of any failure of one capacitor, for instance caused by any flash over the inside winded foils. 2.1 Unbalance monitoring voltage 2.2 Unbalance monitoring current ESTAsym CPR Operating instructions Doc No.: 13172 - Rev. 01 Page 7 of 22 3 Operation 3.1 Power supply The ESTAsym CPR is equipped with an power supply capable for 40-250VAC 45-65Hz and 40-300VDC. 3.2 Inputs 3.2.1 Measurement input The ESTAsym CPR has one voltage and one current input. Possible range for voltage input is 0,1-20V. The measurement range for the current input 10mA-5A. The ESTAsym CPR supervises current or voltage. It’s not possible to use both inputs parallel! 3.2.2 Blocking input All monitoring functions can be blocked via inputs DI1 and DI2. Please check the referring manual item for further information’s. ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions 3.3 Page 8 of 22 Outputs The ESTAsym CPR has 4 relay outputs. See 3.3.1 See 3.3.2 See 3.3.3 See 3.3.4 3.3.1 Trip relay The trip relay operates change over contacts 11-12/14. Contacts 11-12 are normally closed and 11-14 normally open ( no trip condition). However, if the trigger value (voltage or current) for trip is exceeded for a longer period than , contacts 11-14 will close and 11-12 will open. 3.3.2 Alarm relay The alarm relay operates change over contacts 21-22/24. Contacts 21-22 are normally closed and 21-24 normally open (no alarm condition). However, if the trigger value (voltage or current) for alarm is exceeded for a longer period than , 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, contacts 31-34 will close and 31-32 will open. 3.3.4 “In order” relay The ESTAsym CPR has an self-supervision that monitors internal modules and software. If an internal fault is detected, the relay will open contact 41-44 and closes 41-42. Additional to the relay contact the fault is shown in the display “SyS” or “Prog”. The “in order” relay is also a sign of life contact, in case of missing power supply the contacts 41-42 closes and contact 41-44 opens. ESTAsym CPR Operating instructions 3.4 Doc No.: 13172 - Rev. 01 Page 9 of 22 User Interface 3.4.1 Keys Increase values, select menu items Escape menu, Enter menu, move cursor left, move cursor right, push 3 sec to clear confirmation of settings trips/alarm Decrease values, select menu items 3.4.2 Display 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. ESTAsym CPR Operating instructions Doc No.: 13172 - Rev. 01 Page 10 of 22 3.4.3 Input of numerical values Whenever the ESTAsym CPR prompts for the input of a value, the routine will be the same: A preset-value will be displayed with the first (highest) digit blinking. This digit can now be changed by use of the and keys. Use the button to change to the next smaller digit. After changing, the next digit will be also blinking and can now be altered just like the first one. 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 a adjusted value cannot be stored respectively another value is shown after confirmation with button, it’s possible that the adjusted value is outside of the allowed range. For further information’s about possible ranges, please check the table on the last page. 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! ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 11 of 22 4 Menus 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’s 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 . Display’s the stored value for “Natural Unbalance” for current respectively voltage. Display’s the adjusted threshold for trip. Display’s the adjusted time delay for trip Display’s the adjusted threshold for alarm. Display’s the adjusted time delay for alarm. Display’s the software version of the device. Display’s the state of digital input. Possible readings are: The function to block 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 via the DI. Possible settings are explained in “Setup” menu item and . ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions 4.2 Page 12 of 22 Setup The main menu “Setup” is split into two menu levels. Level 1 is the “start menu”, this contains settings to commissioning the ESTAsym CPR. Level 2 is the expert menu this menu contains all possible settings. Because of the possible settings this menu is protected by an separate password. 4.2.1 Start menu Password 242 To enter this menu, use the button to select “Setup” and confirm by pushing . To enter the menu use password (242). The menus can be selected by and entered by . This menu item allows store the natural unbalance for current or voltage of the monitored capacitors. To store the natural unbalance 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 for natural unbalance, just push the button again. The stored value for natural unbalance is shown in the “Info” menu. The evaluation of the natural unbalance happens according to amount. If the measured value drops below the stored value for natural unbalance, this causes a increased reading for display and supervision. Set the threshold for trip. The threshold can be set as real value (0,2 – 20 V for voltage / 20mA – 5A for * current ). Also it’s possible to set the threshold as percent value related to the nominal range for current or voltage. In factory setting the real value has to be adjusted. Attention: This value will be adapted by a later change of the transformer ratio automatically. ! The input can changed to percent at menu item * in submenu When using a VT / CT the given thresholds are multiplied by the adjusted transformer ratio. . ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 13 of 22 Set the delay time for trip. If the trigger value (voltage or current) for trip is exceeded for a longer period than , contacts 11-14 will close and 11-12 will open. Set the threshold for alarm. The threshold can be set as real value (0,2 – 20 V for voltage / 20mA – 5A for current*). Also it’s possible to set the threshold as percent value related to the nominal range for current or voltage. In factory setting the real value has to be adjusted. Attention: This value will be adapted by a later change of the transformer ratio automatically. ! The input can changed to percent at menu item in submenu . Sets the delay time for alarm. If the trigger value (voltage or current) for alarm is exceeded for a longer period than , 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 push the "⊳" Button for 3 sec. After a power interruption the relay goes back to origin state before the interruption. 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. ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 14 of 22 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 power interruption the relay goes back to origin state before the interruption. 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 only with alarm relay relay 3 becomes active only 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 power interruption the relay goes back to origin state before the interruption. ESTAsym CPR Operating instructions 4.2.2 Expert menu Doc No.: 13172 - Rev. 01 Page 15 of 22 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 ESTAsym CPR is measuring the current at input K&L. Trip and alarm thresholds are given in A respectively in % of nominal input range. The ESTAsym CPR is measuring the voltage at input UM1 & UM2. Trip and alarm thresholds are given in V respectively in % of nominal input range. Values in percent All values are shown in %. The thresholds for voltage or current are set in % related to nominal value of the input. All values are shown as real value. The thresholds for voltage or current are set as real 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’s possible to adjust the grid frequency. Possible settings are 50Hz and 60Hz. The setting for the frequency should be correct otherwise the measurement does not work proper. ESTAsym CPR Operating instructions 4.2.2.3 Doc No.: 13172 - Rev. 01 Page 16 of 22 Alarm menu Trip active When exceeding the adjusted threshold for trip, the trip relays operates, the display is blinking and shows No event following the exceeding the trip threshold. 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 alarm, the alarm relays operates, the display is blinking and shows No event following the exceeding the trip threshold. Store alarm in “Alarm buffer” Alarms are stored with the trigger value in the “Alarm buffer”. Alarms are not stored. Drop off ratio (hysteresis) Possible setting from 50% - 100% of adjusted thresholds for current and voltage. The “drop off ratio” defines the threshold when resetting a trip or an alarm when the monitored value falls below the adjusted threshold. i.e. Case 1: Threshold for trip is 0.5A and “drop of ratio” is 100% = trip is reset when the current falls below 0.5A. Case 2: Threshold for trip is 0.5A and “drop of ratio” is 50% = trip is reset when the current falls below 0.25A. ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 17 of 22 The ESTAsym CPR is working with unsigned absolute values. Due to this always a positive value is ! shown. Independent of the direction of the changing (meas. value increase / decrease) always a exceeding of the threshold is given. 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 respectively deactivated by opening respectively closing the ! contact DI1 and DI2. Connecting a voltage signal can destroy the ESTAsym CPR. ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions 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. Page 18 of 22 ESTAsym CPR Operating instructions 4.3 Doc No.: 13172 - Rev. 01 Page 19 of 22 Alarm The submenu “Alarm” contains the last 5 trips and the last 5 alarms. The alarms and trips are stored with the value which has triggered the event. The alarm storage is an ring buffer, with upcoming a new trip/alarm, the oldest event will be deleted. Also it’s possible to clear the “Alarm” menu in menu 400 “Reset menu”. To enter this menu, use the button to select “Alarm”. Enter the menu by pushing . Select the events by pushing the and buttons. ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 20 of 22 5 Technical Data ESTAsym CPR Auxiliary voltage 40 – 250V AC, 45-65HZ / 40 – 300VDC, 5VA; max. fuse 6A Voltage measuring 0,1 – 20V; burden 284kOhm; vt-ratio from 1 – 350, with low pass filter Continuous overload: 120V Short term overload: 500V for ten seconds Accuracy: 0.5% from upper range value Current measuring 10mA – 5A; burden 20mOhm; ct-ratio from 1-4000, with low pass filter Continuous overload: 25A Short term overload: 100A for one second Accuracy: 0.5% from upper range value Relay outputs 4 output relays, change over contact, voltfree, max fuse 6A Function: Relay 1: Trip, Relay 2: Alarm, Relay 3: adjustable Alarm, trip or both Relay 4: in order Max. output rating AC: 1250VA, max switching voltage: 440VAC Max. output rating DC (ohmic): 30V / 5A; 60V / 1A; 110V / 0,5A; 220V / 0,3A Digital input Blocking Alarm / Trip via digital input. Interface TTL, rear (optional accessories TTL-USB converter) Ambient temperature Operation: -20°C – 70°C, storag e: -40°C – 85°C Humidity 0% - 95%, without moisture condensation Overvoltage class II, pollution degree 3 (DIN VDE 0110, Teil 1 / IEC 60664-1) Standards 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) Conformity and listing CE Terminals screw-type, max. 2,5mm Casing front: instrument casing plastic (UL94-VO), rear: metal Protection class Front: IP50, (IP54 by using a gasket), Rear: IP20 Weight ca. 0,65 kg Dimensions 144 x 144 x 58mm (h x w x d), cutout 138 2 +0,5 +0,5 x 138 mm ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 21 of 22 6 Menu overview MEAS U / I in % V/A INFO ALARM SETUP 242 100 Natural unbalance U / I („NU“) 511 100 Natural unbalance U / I („NU“) Trip value "trd" Trip value "trd" Trip time "trt" Trip time "trt" "tr1" Alarm value "Ald" "tr2" Alarm time "Alt" "tr3" Software version "Fr" Trip latchable "trL" "tr4" Di state "dl" Alarm latchable "ALL“ "tr5" Relay 3 "r3" "AL1" Relay 3 latchable "r3L" "AL2" Alarm value "Ald" Alarm time "Alt" "AL3" 200 Current / voltage metering "Cur“ "AL4" Display real value or % "Per" "AL5" Transformer factor "trF" Line frequency "Frq" 300 Trip active "tr" Store trip in buffer "trs" Alarm active "AL" Store alarm in buffer "ALS" Drop off ratio "dor" Activate DI "dl" DI open or closed "dIL" 400 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" ESTAsym CPR Doc No.: 13172 - Rev. 01 Operating instructions Page 22 of 22 7 Settings Parameter Range Factory settings Natural unbalanced I “NU" Trip value "trd" Trip time“trt” Alarm value“Ald” Alarm time“Alt” 20mA-5A / 200mV-20V * 2A 0,1-100 s 0,1 s 20mA-5A / 200mV-20V* 1A 0,1-100 s 5,0 s Trip latchable“trL” X X X Alarm latchable“ALL” Relays 3 „r3“ Relay 3 latchable “r3L” X X Current / voltage metering „Cur“ Display real value“PEr” Transformer factor “trF” Line frequency „Frq“ X CT 1-4000 / PT 1-350 6 50 / 60 50 Trip active“tr” X X X X Store trip in buffer “trs” Alarm active “AL” Store alarm in buffer “ALS” Drop off ratio “dor” 50% - 100% 90% Activate DI “dI” X X DI open or closed “dIL” Password „Setup“ 242 Password „Expert“ 511 * When using a VT / CT the given thresholds are multiplied by the adjusted transformer ratio. Customer settings