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Coupled PV generators (application example)

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isoPV_D00024_02_M_XXEN/07.2018

8. Coupled PV generators (application example)

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Summary of Contents for ISOMETER isoPV with AGH-PV

Page 1: ...oPV_D00024_02_M_XXEN 07 2018 ISOMETER isoPV coupling device AGH PV Insulation monitoring device for unearthed IT AC AC DC and DC systems for photovoltaic systems up to AC 793 V DC 1100 V Software version D351 V2 0 ...

Page 2: ...erg Germany P O Box 1161 35301 Grünberg Germany Tel 49 6401 807 0 Fax 49 6401 807 259 E mail info bender de www bender de Bender GmbH Co KG All rights reserved Reprinting only with permission of the publisher Subject to change Photos Bender archive ...

Page 3: ... 1 6 Warranty and liability 10 1 7 Disposal 10 2 Safety instructions 11 2 1 General safety instructions 11 2 2 Work activities on electrical installations 11 2 3 Intended use 11 2 3 1 Personnel 12 2 3 2 Hazards when handling the ISOMETER isoPV 12 2 3 3 Note 12 2 4 Directions for installation 13 3 Function 15 3 1 Features isoPV 15 3 2 Features AGH PV 15 3 3 Application 16 3 4 Description of functio...

Page 4: ...vigation within the menu 34 6 2 2 Parameter change 34 6 2 3 Changing from the menu mode to the standard mode 34 6 2 4 Diagram menu structure 35 6 3 Menu HISTORY INFO 36 6 3 1 Diagram HISTORY INFO 37 6 4 Menu ISO SETUP Setting of the basic ISOMETER functions 38 6 4 1 Response values Alarm1 and Alarm2 38 6 4 2 Operating principle of the alarm relays 39 6 4 3 Memory setting on off 41 6 4 4 Current ou...

Page 5: ...ISOnet function 46 6 6 3 ISO monitor 46 6 6 4 Diagram COM SETUP 47 6 7 PASSWORD menu 48 6 7 1 Setting and activating the password 48 6 7 2 PASSWORD diagram 48 6 8 LANGUAGE Menu 49 6 8 1 Language setting 49 6 8 2 Language diagram 49 6 9 SERVICE menu 49 7 Serial interface 50 7 1 RS 485 interface with BMS protocol 50 7 2 Topology RS 485 network 50 7 2 1 Correct arrangement 51 7 2 2 Wrong arrangement ...

Page 6: ...2_M_XXEN 07 2018 9 Technical data isoPV with AGH PV 59 9 1 Data in tabular form isoPV 59 9 2 Technical data in tabular form AGH PV 62 9 3 Standards approvals and certifications 63 9 4 Characteristic curves 64 9 5 Ordering information 68 ...

Page 7: ...s read this manual before mounting connecting and commissioning thedevice Alwayskeepthismanualwithineasyreachfor futurereference This signal word indicates that there is a high risk of danger that will result in electrocution or serious injury if not avoided This signal word indicates a medium risk of danger that can lead to death or serious injury if not avoided This signal word indicates a mediu...

Page 8: ...ir calibration update and replacement service for Bender products Repairing calibrating testing and analysing Bender products Hardware and software update for Bender devices Delivery of replacement devices in the event of faulty or incorrectly delivered Bender devices Extended guarantee for Bender devices which includes an in house repair service or replacement devices at no extra cost Telephone 4...

Page 9: ...or software products the Softwareklausel zur Überlassung von Standard Software als Teil von Lieferungen Ergänzung und Änderung der Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen der Elektroindustrie software clause in respect of the licensing of standard software as part of deliveries modifications and changes to gene ral delivery conditions for products and services in the electrica...

Page 10: ...e device Furthermore the rules and regulations that apply for ac cident prevention at the place of use must be observed 1 7 Disposal Abide by the national regulations and laws governing the disposal of this device Ask your supplier if you are not sure how to dispose of the old equipment The directive on waste electrical and electronic equipment WEEE directive and the di rective on the restriction ...

Page 11: ...ch deviates from or is beyond the scope of the intended use is considered non compliant The Bender companies shall not be liable for any losses or damage arising therefrom Intended use also implies compliance with all information in this operating manual and compliance with any test intervals Onlyqualifiedpersonnelarepermittedtocarryouttheworknecessaryto install commission and run a device or syst...

Page 12: ...arts and additional devices which are not sold and re commended by the manufacturer of the devices may cause fires electric shocks and injuries Unauthorised persons must not have access to or contact with the ISOMETER Warning signs must always be easily legible Damaged or illegible signs must be replaced immediately In order to meet the requirements of the applicable standards customised parameter...

Page 13: ...he requirements of the IT system to be monitored Response value Ran For correct setting of the response value in kΩ it is useful to know the present value of the insulation resistance of the photovoltaic system Subject to the IEC 62109 2 standard a drop in insulation resistance at the input of the photovoltaic inverterbelow a specified minimum value is not permitted Thisresistance is dependent on ...

Page 14: ...he formula below applies For systems 30 kVA the following formula applies VmaxPV Maximum value of the photovoltaic system voltage Pmax Maximum value of the active power of the photovoltaic system When an AC system being monitored contains galvanically coupled DC circuits An insulation fault can only be monitored correctly when the rectifiers carry a continuous load current of 5 10 mA R 1kΩ V V max...

Page 15: ...es of 0 2 kΩ 100 kΩ each Alarm 1 Alarm 2 Two line LC display Automatic device self test Memory with real time clock to store alarm messages with date and time stamp BMS interface Bender Measuring Device Interface for communication with other Bender devices RS 485 galvanically isolated Internal disconnection of the ISOMETER via control signal terminals F1 F2 from the IT system to be monitored e g i...

Page 16: ...ocessor controlled pulsating AC measuring voltage is superimposed on the IT system to be monitored measurement method The measuring pulse consists of positive and negative cycles of the same amplitude The period depends on the respective system leakage capacitances and the insulation resistance of the system to be monitored An insulation fault between system and earth closes the measuring circuit ...

Page 17: ...for photovoltaic plants with thin layer cells Also refer to the measurement methods table starting from Page 42 3 4 2 Self test A self test can be started automatically or manually by means of the test button In order to guarantee high functional reliability the ISOMETER provides comprehensive self test functions After switching the device to the supply voltage all internal measuring functions the...

Page 18: ...the RS 485 interface An output current range of 0 20 mA or 4 20 mA can be selected by means of the ISO SETUP menu refer to Page 40 In addition the centre scale mark can be set to 28kΩ or 120kΩ related to an external measuring instrument Alarm message Description Actions Connection PE No low resistance con nection between the terminals and KE and the earth PE 1 Check the wiring of the terminals and...

Page 19: ...odes or capacitances may also influence the insulation monitoring process so that a central control of the dif ferent ISOMETER s is required 3 4 6 Function input F1 F2 for connection or disconnection of IT systems being monitored The ISOMETER can be disconnected from the IT system and set to STANDBY mode with the function input F1 F2 If the input F1 F2 is bridged the connections to the coupling de...

Page 20: ...ISOMETER s are in the STANDBY mode the insulation mo nitoring function of the master ISOMETER and hence the function input F1 F2 of the master are without function in this mode Details are illustrated in the graphic below BMS bus A B RS485 F1 F2 PE PE PE PE IT System 1 IT System 2 IT System 3 IT System 4 G G G G Addr 1 Addr 2 Addr 4 Addr 3 iso PV AGH PV iso PV AGH PV iso PV AGH PV iso PV AGH PV F1...

Page 21: ... in interconnected IT systems In comparison to a solution with coupling switches and function input F1 F2 the response time will be extended because the measurement is not permanently carried out This has the advantage that no auxiliary contacts of a cou pling switch are required Furthermore this solution is recommended for IT systems coupled via capacitances or diodes Each ISOnet slave checks the...

Page 22: ...tails indicated on the nameplate External TEST button NO contact to the terminals T1 and T2 External RESET button NC contact to the terminals R1 and R2 The output contacts of the alarm relays System fault 21 22 24 Alarm 1 11 12 14 Alarm 2 21 22 24 When using the RS485 interface take care that a 120 W resistor is connected at the beginning and the end of the network 13 12 11 8 10 Deenergize the ins...

Page 23: ...measurement Shall the basic setting be changed Alarm1 4 kW Alarm2 1 kW K1 K2 N O operation Memory off no yes Does one of the alarm LEDs light up Select ISO SETUP see chapter operation and setting no yes The insulation value of the system being monitored is below the preset response value Change the response value or improve the insulation condition of the system Set the clock Connect the voltage U...

Page 24: ...preset response value Alarm 2 Check the connecting leads Is voltage Un applied to the terminals L1 L2 of the coupling device AGH PV Check the voltages with a suitable voltmeter yes yes Remove the resistor isoPV is correctly connected and functions reliably Do both alarm LEDs light up Did the alarm relays switch yes no Do both alarm LEDs light Did the alarm relays switch Alarm LEDs extinguished Did...

Page 25: ...IT system When insulation or voltage tests are to be carried out the device must be isolated from the system for the test period Otherwise the device may be damaged Risk of property damage due to unprofessional installation If more than one insulation monitoring device is connected to a conductively connected system the system can be damaged If several devices are connected the device does not fun...

Page 26: ...n the rectifier valves carry a minimum current of 10 mA For UL applications Only use 60 75 C copper lines For UL and CSA applications the supply voltage must be protected via 5 A fuses In order to ensure compliance with prescribed temperature limit values install the isoPV and AGH PV with a distance of at least 31 mm to all adjacent devices The cable length of the connecting cables between the AGH...

Page 27: ...es is mandatory Devices for protection against short circuit in conformity with IEC 60364 4 43 for the coupling of terminals L1 L2 of the AGH PV to the IT system being monitored can be omitted if the wiring is carried out in such a manner as to reduce the risk of a short circuit to a minimum a short circuit proof and earth fault proof wiring is recommended An external TEST button or an external re...

Page 28: ...7 2018 PE L1 L2 AK1 AK2 L1 L2 L3 Un 3 AC System L1 N L2 Un L1 L2 L3 3 N AC System L1 L2 L1 L2 AC System L2 L1 Un L L DC System L2 L1 Un A1 A2 AK1 AK2 KE T1 T2 R1 R2 F1 F2 M M A B 11 12 14 21 22 24 isoPV mA 120W K1 K2 1 6 7 8 9 10 11 12 13 Us 2 3 4 5 AGH PV ...

Page 29: ...L terminal L2 to conductor L 6 Separate connection of E and KE to PE 7 External TEST button N O contact 8 External RESET button N C contact or wire jumper when the terminals are open the fault message will not be stored 9 STANDBY by means of the function input F1 F2 when the contact is closed the insulation resistance is not measured Disconnection from the IT system 10 Current output electrically ...

Page 30: ...EST button to call up the self test arrow up button parameter change to move up in the menu 3 RESET button to delete stored insulation fault alarms Down button parameter change to move down in the menu 4 MENU button to call up the menu system Enter button to confirm parameter change 5 ALARM LED 1 lights insulation fault first warning level reached 6 ALARM LED 2 lights insulation fault second warni...

Page 31: ...sistance in kW 2 Additional information about the insulation resis tance Insulation fault at L Insulation fault at L s New measurement is being started 3 Polarity of the measuring pulse Valid BMS bus communication H New entry in the memory data base C Flashing clock is to be set 4 Messages Insulation fault Connection PE Device error x STAND BY Parameter change is permitted Parameter change is bloc...

Page 32: ...ddress Please have the details above on hand if you have a problem and if you contact Bender for technical questions Press the TEST button to start the self test of the ISOMETER Press the RESET button to reset insulation fault alarms stored in the ISOMETER The memory function is only available after activating the fault memory in the ISO SETUP menu or after bridging the terminals R1 R2 Furthermore...

Page 33: ...o select a menu item or sub menu item confirm or store a parameter change and to return to the associated sub menu item or skip to the next entry field ESC button To return from a sub menu to the previous menu If the menu is not exited the device automatically returns to the standard mode again after approximately five minutes For the sake of clarity the following symbols are used in the menu diag...

Page 34: ...e password protection is activated symbolised by padlock closed on the display enter a valid password to be able to change parameters with the Up Down buttons Once the password is entered correctly all parameters can be changed as long as you stay in the menu Changing the parameters usually has an immediate effect on the measuring and alarm functions The changed parameter is stored in a non volati...

Page 35: ...re AMP4 5 Autotest 24h 6 Clock 19 08 7 Date 01 01 01 8 Test 00 00 1 Exit 2 Alarm1 4 0 kW 3 Alarm2 1 0 kW 4 K1 N O 5 K2 N O 6 Memory on 7 M M 0 20 mA 8 M M Ri 28kW Nr 01 Nr 02 Power on 1 Exit 2 Addr 003 3 ISONet off 4 ISO Monitor Insert Service Password XXX ISO ADVANCED ISO SETUP HISTORY INFO COM SETUP SERVICE 1 Exit 2 Password XXX 3 Status off PASSWORD 1 Exit 2 Text Deutsch LANGUAGE ESC IT SYSTEM ...

Page 36: ... memory is identified by an H The H will only be deleted when the HISTORY INFO menu item is called up To store the events with the actual date and time stamp you need to set the real time clock in the ISO ADVANCED menu first refer to Page 45 Data record Event Display indication 1 Switch the supply voltage on Power On 2 Lowest measured insulation value Rmin 3 99 Response value Alarm 1 released Alar...

Page 37: ...INFO 3 ISO SETUP 4 ISO ADVANCED 5 COM SETUP 6 PASSWORD 7 LANGUAGE 8 SERVICE Nr 01 Nr 08 Power on Nr 01 Nr 08 Clear all off Nr 01 Nr 08 28 08 01 17 43 Nr 02 Nr 08 Clear all off Nr 02 Nr 08 Rmin 010k Nr 02 Nr 08 25 08 01 10 13 Nr 02 Nr 08 Clear all off Nr 02 Nr 08 Clear all off ESC IT SYSTEM R 1 0 MW H ...

Page 38: ...O N O operation N C N C operation the fault storage behaviour and a selection of two current output ranges For UL application In order to ensure the proper functioning of the relay outputs a manual periodic self test where the relay outputs are switched has to be carried out by the user delivery condition 6 4 1 Response values Alarm1 and Alarm2 The response values Alarm1 and Alarm2 are selected wi...

Page 39: ...e alarm relay is energised during normal operation K1 N O N O operation contacts 11 12 14 without relay test the alarm relay is deenergised during normal operation K1 Flash Flashing function contacts 11 12 14 the alarm relay switches and the LED flashes in the event of an alarm message at approx 0 5 Hz K2 N C Test N C operation contacts 21 22 24 with relay test the alarm relay is energised during ...

Page 40: ...Operation and setting 40 isoPV_D00024_02_M_XXEN 07 2018 ISO SETUP diagram During the automatic self test the alarm relays are not switched over ...

Page 41: ...actory setting 8 M M Ri 120kΩ centre scale RSk 120kΩ compatible to IRDH275 4 The function of the current output is dependent on the selected RSk Function 0 20 mA RF insulation fault I current in mA Function 4 20 mA RF insulation fault I current in mA Refer to the associated characteristic curves on Page 64 For UL applications The analogue output as such is not a safe alarm indication in compliance...

Page 42: ...of ope ration the response time tan depends on the lowest frequencies occurring between sys tem and earth during operation This is typical of converter systems including low frequency control processes direct current motors with low frequency control processes or voltage changes in modules of photovoltaic systems caused by the weather In order to improve the quality of insulation measurements in t...

Page 43: ...ndard measurement method using a DC measuring voltage for pure AC systems 3s DC measure ment method permissible for Ce 10μF only DC measure ment method permissible for Ce 10μF only AMP Standard measurement method using the pulse measurement method for AC DCsystemsatsystem frequencies 10Hz 16s 40s 150s AMP2 Optimised measurement method using the pulse measurement method for AC DCsystemsatsystem fre...

Page 44: ...ut also the date has to be set for the history me mory In the event of supply voltage failure the date function is not influenced for at least 30 days When switching the device on at a later date a new setting of the real time clock and the date is required 6 5 7 Specifying the start up time for the automatic self test Test When the 24 h self test is activated in the ISO ADVANCED menu it is possib...

Page 45: ...Operation and setting 45 isoPV_D00024_02_M_XXEN 07 2018 6 5 8 Diagram ISO ADVANCED ...

Page 46: ... mode 6 6 3 ISO monitor This function allows to query the currently measured value as well as the messages of all bus capable ISOMETER s existing in the BMS network After selecting the bus address the entire information stored by the selected device is indicated on the display The display indication is structured similar to the standard indication but instead of the indication of the measuring pul...

Page 47: ...Operation and setting 47 isoPV_D00024_02_M_XXEN 07 2018 6 6 4 Diagram COM SETUP ...

Page 48: ...a Password query This protects the ISOMETER against unauthorised settings and modifications Set the desired password using the UP DOWN buttons menu item 2 Password xxx and confirm the setting with the ENTER button Activate the password in the menu item 3 Status on by clicking the ENTER button The factory setting is 3 Status off 6 7 2 PASSWORD diagram ...

Page 49: ... diffe rent languages There is a choice of German and English The device menu is not influ enced by the language selection 6 8 2 Language diagram 6 9 SERVICE menu This menu item is intended for the Bender service personnel and protected by a pass word against erroneous settings It is intended for fast fault clearance by qualified ex perts in the event of a device error ...

Page 50: ...ly to get instable and may result in mal functions Only the first and the last device in one line may be terminated Devices in between must not be terminated with 120 Ω Hence stub feeders in the network must not be terminated The length of the stub feeders is restricted to 1 meter 7 2 Topology RS 485 network The optimum topology for the RS 485 network is a daisy chain connection In this con nectio...

Page 51: ...angement 7 2 3 Wiring The suitable type of wiring for the RS 485 network is shielded cable core diameter 0 6 mm z B J Y St Y 2x0 6 shield connected to earth PE on one end Connection to the terminals A and B The number of bus nodes is restricted to 32 devices When more devices are to be con nected Bender recommends to use a DI1 repeater DI1 1 32 33 64 ...

Page 52: ...lically listens to their signals and then carries out specific commands Bus address 1 must be assigned to the master thus to one of the isoPV devices 7 3 1 BMS master A master can query all warning and operating messages from a slave If the bus address 1 has been selected for one isoPV the device automatically repre sents the master that means that all addresses between 1 and 150 are cyclically sc...

Page 53: ...oint BMS data received If no flashing point appears it may be attributed to the following No master available in the network More than one master available in the network RS 485 interface terminals A B not connected or reversed The following table gives an overview about essential alarm messages and the assign ment of the messages indicated on the display or alarm indicator and test combina tions ...

Page 54: ...g switch at the end of the bus place a 120 Ω resistor between the terminals A and B Switch the supply voltage on Determine one isoPV as the master and assign address 1 Assign the addresses 2 30 subsequently to all other isoPVs and other bus devices see table below Check whether a flashing point appears on all devices BMS commands are being received The sub menu ISO Monitor in the COM SETUP menu al...

Page 55: ...cast 1 30 IRDH275B 375B 575 isoPV Insulation monitoring devices 1 30 FTC4 Protocol converter 1 90 COM460IP Protocol converter 1 90 EDS46 49 Insulation fault locators 1 150 MK800 Alarm indicator and test combination 111 119 PGH47 Locating current injector 121 150 PGH47 E Locating current injector Assign the addresses consecutively there must be no gaps greater than five in the respective ranges 1 3...

Page 56: ...Coupled PV generators application example 56 isoPV_D00024_02_M_XXEN 07 2018 8 Coupled PV generators application example ...

Page 57: ...57 isoPV_D00024_02_M_XXEN 07 2018 ...

Page 58: ...Coupled PV generators application example 58 isoPV_D00024_02_M_XXEN 07 2018 ...

Page 59: ... insulated voltage IC2 IC3 4 250 V IC3 IC4 250 V Polutiondegree 3 Protective separation reinforced insulation between IC2 IC3 4 Overvoltage category III 300 V IC3 IC4 Overvoltage category III 300 V Voltage test routine test according to IEC 61010 1 IC2 IC3 4 AC 2 2 kV IC3 IC4 AC 2 2 kV Voltage ranges Nominal system voltage Un via AGH PV isoPV 335 Supply voltage Us also see nameplate AC 88 264 V Fr...

Page 60: ...n2 0 2 100 kΩ Factory setting Ran2 Alarm2 1 kΩ Relative uncertainty 7 kΩ 100 kΩ in accordance with IEC 61557 8 2007 01 15 Relative uncertainty 0 2 kΩ 7 kΩ 1 kΩ Response time tan see table starting from Page 42 Hysteresis 25 1 kΩ Measuring circuit Measuring voltage Um peak value 50 V Measuring current Im at RF 0 Ω 1 5 mA Internal DC resistance DC Ri 35 kΩ Impedance Zi at 50 Hz 35 kΩ Permissible ext...

Page 61: ... 0 1 A Minimum contact rating 1 mA at AC DC 10 V Environment EMC EMC not suitable for household and small companies IEC 61326 2 4 Operating temperature 25 ºC 65 ºC Classification of climatic conditions acc to IEC 60721 Stationary use IEC 60721 3 3 3K5 with condensation and formation of ice Transport IEC 60721 3 2 2K3 with condensation and formation of ice Long term storage IEC 60721 3 1 1K4 with c...

Page 62: ... voltage pollution degree 8 kV 3 Voltage ranges Nominal system voltage Un AC 3 N AC 0 793 V DC 0 1 100 V Nominal frequency fn DC 10 460 Hz Max AC voltage U in the frequency range fn 0 1 10 Hz U max 110 V Hz fn Environment EMC EMC IEC61326 2 4 Operating temperature 25 ºC 65 ºC Classification of climatic conditions acc to IEC 60721 Stationary use IEC 60721 3 3 3K5 with condensation and formation of ...

Page 63: ...30 Degree of protection terminals DIN EN 60529 IP20 Type ofenclosure X200 free from halogen DIN railmounting DIN EN 60715 IEC 60715 Screw fixing 2 x M4 Flammabilityclass UL94 V 0 Weight 230 g 9 3 Standards approvals and certifications The ISOMETER was designed in accordance with the following standards DIN EN 61557 8 VDE 0413 8 IEC 61557 8 IEC 61326 2 4 DIN EN 60664 1 VDE 0110 1 DIN EN 60664 3 VDE...

Page 64: ...4_02_M_XXEN 07 2018 9 4 Characteristic curves Current output 0 20 mA RF Insulation fault in kW RSk Centre scale in kW I Current output in mA 1 00 10 00 100 00 1000 00 0 0 5 0 10 0 15 0 20 0 25 0 I mA RF k Rsk 28kOhm Rsk 120kOhm RF 20 mA x RSk I RSk ...

Page 65: ...isoPV_D00024_02_M_XXEN 07 2018 Current output 4 20 mA RF Insulation fault in kW RSk Centre scale in kW I Current output in mA 1 00 10 00 100 00 1000 00 0 0 5 0 10 0 15 0 20 0 25 0 I mA RF k Rsk 28kOhm Rsk 120kOhm RF 16 mA x RSk RSk I 4 mA ...

Page 66: ...ge German Language English 8 Password protection not activated Password protection activated 9 DC measuring principle AMP measuring principle AMP2 measuring principle AMP3 measuring principle AMP4 measuring principle 10 max filter frequency 0 1Hz max filter frequency 1Hz max filter frequency 10Hz max filter frequency 50Hz 11 min filter frequency 0 1Hz min filter frequency 1Hz min filter frequency ...

Page 67: ...imension diagram enclosure isoPV All dimensions in mm DIN rail mounting according to DIN EN 60715 IEC 60715 Screw fixing by means of a plug in trapezoidal support Order No B990056 Dimension diagram enclosure AGH PV All dimensions in mm Illustration with terminal covers ...

Page 68: ...ies for screw fixing Order No B990056 Type Nominal voltage Un Supply voltage Us Art No isoPV 327 AGH PV consisting of isoPV 327 AGH PV 3 N AC 0 793 V DC 0 1100 V AC 19 2 55 V 42 460 Hz DC 19 2 72 V B91065132W B91065130W B98039020W isoPV 335 AGH PV consisting of isoPV 335 AGH PV 3 N AC 0 793 V DC 0 1100 V AC 88 264 V DC 77 286 V B91065133W B91065131W B98039020W ...

Page 69: ...error LED 17 Dimension diagram enclosure 67 Directions for installation 13 Display in standard mode 31 in the menu mode 31 Display and operating elements iso PV 30 E External coupling devices 42 External reset button 29 External test button 29 F Factory setting 13 Flashing point 53 Function input F1 F2 19 H History memory 36 How to use this manual 7 I Info button 30 Insulationresistanceofthephotov...

Page 70: ...eter 30 44 Service 8 Setting and activating the password 48 Setting the centre scale mark 41 Setting the clock 44 Setting the date 44 Setting the operating principle of the alarm relays 39 Setting theresponsevalues Alarm1 and Alarm2 38 Standards 63 Status number 66 Support 8 Switch the fault memory on or off 41 System leakage capacitance maximum value 42 T Technical data 59 terminated RS 485 netwo...

Page 71: ......

Page 72: ...erg Germany P O Box 1161 35301 Grünberg Germany Tel 49 6401 807 0 Fax 49 6401 807 259 E mail info bender de www bender de Bender GmbH Co KG All rights reserved Reprinting only with permission of the publisher Subject to change Photos Bender archive ...

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