Bender ISOMETER isoPV425 with AGH420 Manual de usuario

Manual EN

ISOMETER® isoPV425

with AGH420 coupling evice

Insulation monitoring device for unearthed DC circuits (IT systems) for

photovoltaic systems up to 3(N)AC, AC 90 V / DC 1000 V

isoPV425_D00028_11_M_XXEN/07.2023



2 isoPV425_D00028_11_M_XXEN/07.2023

ISOMETER® isoPV425

with AGH420 coupling device

Table of contents

1General information...........................................................................................5

1.1 How to use the manual.................................................................................................................................5

1.2 Indication of important instructions and information.......................................................................5

1.3 Signs and symbols...........................................................................................................................................5

1.4 Service and Support....................................................................................................................................... 5

1.5 Training courses and seminars...................................................................................................................5

1. Delivery conditions.........................................................................................................................................

1.7 Inspection, transport and storage.............................................................................................................

1.8 Warranty and liability.....................................................................................................................................

1.9 Disposal of Bender devices..........................................................................................................................

1.10 Safety.................................................................................................................................................................... 7

2Function...............................................................................................................8

2.1 Intended use......................................................................................................................................................8

2.2 Device features................................................................................................................................................. 8

2.3 Functional description...................................................................................................................................9

2.3.1 Monitoring the insulation resistance....................................................................................................... 9

2.3.2 Undervoltage/overvoltage monitoring................................................................................................ 10

2.3.3 Self test/error codes.....................................................................................................................................10

2.3.4 Malfunction......................................................................................................................................................11

2.3.5 Signalling assignment of the alarm relays K1/K2..............................................................................11

2.3. Measuring and response times................................................................................................................12

2.3.7 Password protection (on, OFF)................................................................................................................ 12

2.3.8 External test/reset button (T/R)............................................................................................................... 12

2.3.9 Fault memory..................................................................................................................................................13

2.3.10 History memory HiS..................................................................................................................................... 13

2.3.11 Interface/protocols........................................................................................................................................13

3Installation, connection an commissioning.................................................14

3.1 Dimensions...................................................................................................................................................... 14

3.2 Installation........................................................................................................................................................14

3.3 Connection.......................................................................................................................................................15

3.4 Commissioning...............................................................................................................................................1

4Operation.......................................................................................................... 18

4.1 Operating and display elements.............................................................................................................18

isoPV425_D00028_11_M_XXEN/07.2023 3

Table of contents

4.2 Menu overview...............................................................................................................................................20

4.3 Displaying measured values..................................................................................................................... 20

4.4 Setting the response values (AL)............................................................................................................ 21

4.4.1 Setting the insulation resistance parameters.....................................................................................21

4.4.2 Setting parameters for undervoltage and overvoltage..................................................................22

4.4.3 Response values overview.........................................................................................................................22

4.5 Configuring fault memory, alarm relays, and interfaces (out)......................................................22

4.5.1 Configuring the relays.................................................................................................................................22

4.5.2 Allocating messages to the relays.......................................................................................................... 23

4.5.3 Activating or deactivating fault memory.............................................................................................23

4.5.4 Configuring interfaces.................................................................................................................................24

4. Setting delay times and self test cycles (t).......................................................................................... 24

4.7 Setting device control parameters (SEt)...............................................................................................24

4.8 Reset to factory settings.............................................................................................................................25

4.9 Showing and deleting the history memory........................................................................................25

4.10 Querying software version (InF).............................................................................................................. 25

5Data access via interfaces................................................................................26

5.1 Data access using the BMS protocol..................................................................................................... 2

5.2 IsoData data string....................................................................................................................................... 2

5.3 Data access using the Modbus RTU protocol.................................................................................... 27

5.3.1 Reading out the Modbus register from the ISOMETER®.................................................................27

5.3.2 Writing the Modbus register (parameter setting).............................................................................28

5.3.3 Exception code...............................................................................................................................................29

5.3.4 Modbus register assignment.................................................................................................................... 30

5.3.5 Device-specific data types......................................................................................................................... 33

6Technical ata...................................................................................................39

.1 Technical data isoPV425.............................................................................................................................39

.2 Technical data AGH420...............................................................................................................................43

.3 Standards and certifications..................................................................................................................... 4

.4 Ordering data..................................................................................................................................................4

4 isoPV425_D00028_11_M_XXEN/07.2023

ISOMETER® isoPV425

with AGH420 coupling device

1 General information

1.1 How to use the manual

ADVICE

This manual is intended for qualified personnel working in electrical engineering and electronics!

Part of the device documentation in addition to this manual is the enclosed supplement "Safety

instructions for Bender products".

ADVICE

Read the operating manual before mounting, connecting and commissioning the device. Keep the

manual within easy reach for future reference.

1.2 In ication of important instructions an information

DANGER

Indicates a high risk of danger that will result in death or serious injury if not avoided.

WARNING

Indicates a medium risk of danger that can lead to death or serious injury if not avoided.

CAUTION

Indicates a low-level risk that can result in minor or moderate injury or damage to property if not

avoided.

Information can help to optimise the use of the product.

1.3 Signs an symbols

Disposal Protect from moisture Protect from dust

Temperature range Recycling RoHS directives

1.4 Service an Support

Information and contact details about customer service, repair service or field service for Bender devices are

available on the following website: Fast assistance | Bender GmbH & Co. KG.

1.5 Training courses an seminars

Regular face-to-face or online seminars for customers and other interested parties:

www.bender.de > know-how > seminars.

isoPV425_D00028_11_M_XXEN/07.2023 5

General information

1.6 Delivery con itions

The conditions of sale and delivery set out by Bender GmbH & Co. KG apply. These can be obtained in printed

or electronic format.

The following applies to software products:

Die Elektroindustrie

‘Software clause in respect of the licensing of standard software as part of deliveries,

modifications and changes to general delivery conditions for products and services in the

electrical industry’

1.7 Inspection, transport an storage

Check the shipping and device packaging for transport damage and scope of delivery. In the event of

complaints, the company must be notified immediately, see "www.bender.de > service & support.".

The following must be observed when storing the devices:

1.8 Warranty an liability

Warranty and liability claims for personal injury and property damage are excluded in the case of:

•Improper use of the device.

•Incorrect mounting, commissioning, operation and maintenance of the device.

•Failure to observe the instructions in this operating manual regarding transport, commissioning, operation

and maintenance of the device.

•Unauthorised changes to the device made by parties other than the manufacturer.

•Non-observance of technical data.

•Repairs carried out incorrectly.

•The use of accessories or spare parts that are not provided, approved or recommended by the

manufacturer.

•Catastrophes caused by external influences and force majeure.

•Mounting and installation with device combinations not approved or recommended by the manufacturer.

This operating manual and the enclosed safety instructions must be observed by all persons working with the

device. Furthermore, the rules and regulations that apply for accident prevention at the place of use must be

observed.

1.9 Disposal of Ben er evices

Abide by the national regulations and laws governing the disposal of this device.

For more information on the disposal of Bender devices, refer to

www.bender.de > service & support.

isoPV425_D00028_11_M_XXEN/07.2023

ISOMETER® isoPV425

with AGH420 coupling device

1.10 Safety

If the device is used outside the Federal Republic of Germany, the applicable local standards and regulations

must be complied with. In Europe, the European standard EN 50110 applies.

DANGER Risk of fatal injury due to electric shock!

Touching live parts of the system carries the risk of:

•Risk of electrocution due to electric shock

•Damage to the electrical installation

•Destruction of the device

Before installing the device and before working on its connections, make sure that the installation

has been de-energised. The rules for working on electrical systems must be observed.

isoPV425_D00028_11_M_XXEN/07.2023 7

Function

2 Function

2.1 Inten e use

The ISOMETER® monitors the insulation resistance RF of unearthed AC/DC main circuits (IT systems) with

nominal system voltages of 3(N)AC, AC/DC 0 … 90 V or DC 0 …1000 V.

DC components existing in 3(N)AC, AC/DC systems do not influence the operating characteristics when a

minimum load current of DC 10 mA flows. The separate supply voltage Us allows de-energised systems to be

monitored as well.

The ISOMETER® is always used in conjunction with the coupling device AGH420.

In order to meet the requirements of the applicable standards, customised parameter settings must be made

on the equipment in order to adapt it to local equipment and operating conditions. Please heed the limits of

the range of application indicated in the technical data.

Any other use or a use that goes beyond this constitutes improper use.

To ensure that the ISOM T R® functions correctly, an internal resistance of ≤ 1 kΩ must exist between L1/+

and L2/– via the source (e.g. the transformer) or the load.

If the ISOM T R® is installed inside a control cabinet, the insulation fault message must be audible and/or

visible to attract attention.

2.2 Device features

•Monitoring for unearthed AC and DC systems with galvanically connected rectifiers or frequency converters

•Measuring the nominal system voltage Un (true RMS) with undervoltage/overvoltage detection

•Selectable start-up delay, response delay and delay on release

•Measuring the residual voltages of the supply system to earth (L1/+, L2/– to PE)

•Automatic adaptation to the system leakage capacitance Ce up to 1000 μF

•Automatic device self test with connection monitoring

•Two separately adjustable response value ranges from 1…500 kΩ (alarm 1, alarm 2)

•Alarms output via LEDs ('AL1', 'AL2'), a display, and alarm relays ('K1', 'K2')

•Selectable N/C or N/O relay operation

•Measured value display via multi-functional LC display

•Fault memory can be activated

•Password protection against unauthorised changing of parameters

•RS-485 (galvanically isolated) including the following protocols:

– BMS (Bender measuring device interface) for the data exchange with other Bender devices

– Modbus RTU

– IsoData (for continuous data output)

8 isoPV425_D00028_11_M_XXEN/07.2023

ISOMETER® isoPV425

with AGH420 coupling device

2.3 Functional escription

The ISOMETER® measures the insulation resistance RF and the system leakage capacitance Ce between the

system to be monitored (L1/+, L2/–) and earth (PE). The RMS value of the nominal system voltage Un between

L1/+ and L2/– as well as the residual voltages UL1e (between L1/+ and earth) and UL2e (between L2/– and earth)

are also measured.

From a minimum value of the nominal system voltage, the ISOMETER® determines the faulty conductor L1/+

or L2/–. The fault is indicated by a '+' or '–' sign preceding the measured value. The value range of the display is

±100 %:

Display Meaning

–100 % One-sided fault on conductor L2/–

0 % Symmetrical fault

+100 % One-sided fault on conductor L1/+

The partial resistances can be calculated from the total insulation resistance RF and the faulty conductor (R %)

using the following formula:

•Fault at con uctor L1/+: RL1F = (200 % * RF) / (100 % + R %)

•Fault at con uctor L2/–: RL2F = (200 % * RF) / (100 % – R %)

Also from a minimum value of the nominal system voltage, the ISOMETER® determines the insulation

resistance RUGF from the residual voltages UL1e and UL2e. It is an approximate value for one-sided insulation

faults and can be used as a trend indicator in cases where the ISOMETER® has to adapt to an RF and Ce relation

that varies considerably.

The determined fault can be assigned to an alarm relay via the menu. If the values RF or Un exceed the response

values activated in the 'AL' menu, this will be indicated by the LEDs and relays 'K1' and 'K2' according to the

alarm assignment set in the 'out' menu. In addition, the operation of the relay (n.o. / n.c.) can be set and the

fault memory 'M' can be activated.

If the values RF oder Un do not exceed their release value (response value plus hysteresis) for the period toff

without interruption, the alarm relays will switch back to their initial position and the alarm LEDs 'AL1'/'AL2'

stop lighting. If the fault memory is activated, the alarm relays remain in the alarm condition and the LEDs light

until the reset button 'R' is pressed or the supply voltage Us is interrupted.

The device function can be tested using the test button 'T'. Parameters are assigned to the device via the LCD

and the control buttons on the front panel; this function can be password-protected. Parameterisation is also

possible via the BMS bus, for example by using the BMS Ethernet gateway (COM4 5IP) or the Modbus RTU.

The isoPV425 determines the system leakage capacitance Ce through an impedance measurement whose

frequency is adjusted to the most accurate insulation measured value possible. The measurement signal is

affected if it goes through a rectifier or inverter. This can lead to phase errors that may result in an incorrect

system leakage capacitance value Ce.

2.3.1 Monitoring the insulation resistance

The insulation resistance RF is monitored by means of the parameters 'R1' (prewarning) and 'R2' (alarm) (see

chapter 4.4). The value 'R1' can only be set higher than the value 'R2'. If the insulation resistance RF reaches or

falls below the activated values 'R1' or 'R2', an alarm message will be signalled. If RF exceeds the values 'R1' or

'R2' plus the hysteresis value, the alarm will be cleared.

isoPV425_D00028_11_M_XXEN/07.2023 9

Function

2.3.2 Un ervoltage/overvoltage monitoring

The two parameters ('U ˂' and 'U ˃') used to monitor the nominal system voltage Un can be enabled or

disabled in the response-value menu 'AL' (chapter 4.4). The maximum undervoltage value is limited by the

overvoltage value.

The RMS value of the nominal system voltage Un is monitored. If the nominal system voltage Un reaches,

falls below, or exceeds the limit values ('U ˂' and 'U ˃'), an alarm message will be signalled. If the maximum

permissible nominal system voltage Un set for the ISOMETER® is exceeded, an alarm message will be initiated

even when the overvoltage limit value has been deactivated. The alarm will be deleted when the limit values

plus hysteresis (chapter 4.4.1) are no longer violated.

2.3.3 Self test/error co es

The self test checks the function of the ISOMETER®, and monitors the connection to earth as well as the

connection to the system to be monitored. The alarm relays do not switch during an automatically started self

test. For a self test started manually, the switching of the alarm relays can be set using the parameter 'test' in

the alarm assignment (menu 'out', chapter 4.5.2). During the test, the display indicates 'tES'.

When malfunctions are detected or connections are missing, the LEDs 'ON'/'AL1'/'AL2' flash. The display shows

the respective error codes ('E.xx'), and in the factory setting relay 'K2' switches. The relays can be assigned to a

device error with the parameter 'Err' in the 'out' menu in the alarm assignment.

In the event of a device error, error co es are shown in the display. Some of these are described below:

Error code Meaning

E.01

PE connection error

The connection of E or KE to earth is interrupted.

Action: Check connection, eliminate error. The error code will be erased automatically once the

error has been eliminated.

E.02

System connection error

The internal resistance of the system is too high or the connection of L1/+ or L2/– to the system is

interrupted. The terminals L1/+ and L2/– are connected incorrectly.

Action: Check connection, eliminate error. The error code will be erased automatically once the

error has been eliminated.

E.05

Measurement error

Due to system interferences or a device error, the insulation measured value is no longer updated.

Prewarning and alarm are set for the insulation measured value at the same time.

Calibration invalid after software update

E.05 appears together with E.08 : The software is not compatible to the calibration of the device.

Action: Install the previous software version or have the device calibrated at the factory.

E.07

Permissible system leakage capacitance Ce e ceeded

The device is not suitable for the present network leakage capacitance Ce.

Action: Uninstall the device.

E.08 Calibration error

Action: Check connection, eliminate error. If the error is still present, there is a device error.

Internal device errors 'E.xx' can be caused by external disturbances or internal hardware errors. If the error

message occurs again after the device has been restarted or after a reset to the factory settings (menu item

10 isoPV425_D00028_11_M_XXEN/07.2023

Otros manuales para ISOMETER isoPV425 with AGH420

Tabla de contenidos

Otros manuales de Instrumento de medición de Bender

Bender

Bender ISOMETER iso685-D-B Manual de usuario

Bender

Bender LINETRAXX PEM575 Series Manual de usuario

Bender

Bender NGRM700 Manual de usuario

Bender

Bender IR5000 Manual de usuario

Bender

Bender iso1685 Series Manual de usuario

Bender

Bender VMD460-NA Manual de usuario

Bender

Bender LINETRAXX RCMS150 Manual de usuario

Bender

Bender ISOMETER isoPV425 with AGH420 Manual del operador

Bender

Bender VMD423 Manual de usuario

Bender

Bender ISOMETER IR425-D4M 1C Manual de usuario

Bender

Bender ISOMETER IR425-D4 Manual de usuario

Bender

Bender ISOMETER isoRW425 Manual de usuario

Bender

Bender LANTRAXX CMS460-D Manual de usuario

Bender

Bender ISOMETER isoNAV685-D-B Manual de usuario

Bender

Bender RCMA420 Manual de usuario

Bender

Bender ISOMETER IR423-D4 Manual de usuario

Bender

Bender ISOMETER IRDH275 Manual de usuario

Bender

Bender ISOMETER isoES425 Manual de usuario

Bender

Bender ISOMETER isoPV425 with AGH420 Manual de usuario

Bender

Bender ISOMETER isoHR685W Series Manual de usuario

Bender

Bender W1-35/8000 Manual de usuario

Bender

Bender ISOMETER iso1685DP-425 Manual de usuario

Bender

Bender PEM353 Manual de usuario

Bender

Bender ISOMETER isoHV425 Manual de usuario

Manuales populares de Instrumento de medición de otras marcas

Suaoki

Suaoki D40 Manual de usuario

Elster

Elster BK-G1.6 Manual de usuario

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manual

Duratool

Duratool D03128 Manual de usuario

Vega

Vega VEGAPULS 65 Manual de usuario

Tonghui

Tonghui TH2618B Manual de usuario

Tenmars

Tenmars TM-801 Manual de usuario

MSR

MSR 145 Manual de usuario

TPS

TPS WP-82 Manual de usuario

ELMETRON

ELMETRON CP-511 Manual de usuario

PCB Piezotronics

PCB Piezotronics 003C30 Manual de usuario

Tenma

Tenma 72-10465 Manual de usuario

Endress+Hauser

Endress+Hauser Proline Promag 50 Especificaciones técnicas

Siemens

Siemens SITRANS F Coriolis FCT030 Manual de lista de piezas

KLINGER

KLINGER CMF V Series Manual de usuario

EXFO

EXFO FTB-2 Manual de operación y mantenimiento

Keysight

Keysight M8290A Manual de usuario

ADTEK

ADTEK MW-5 Manual de usuario