Bender ISOMETER IR1575PG1 User manual

Manual
EN
ISOMETER® IR1575PG1
Insulation monitoring device for IT AC and DC systems with integrated
test current generator for insulation fault location
IR1575PG1_D00357_01_M_XXEN/12.2019

Bender GmbH & Co. KG
P.O. Box 1161 • 35301 Grünberg • Germany
Londorfer Str. 65 • 35305 Grünberg • Germany
Tel.: [phone] • Fax: [phone]
E-mail: [e-mail] • www.bender.de
©Bender GmbH & Co. KG
All rights reserved.
Reprinting only with permission of the publisher.
Subject to change!
Photos: Bender archive

3
Table of Contents
IR1575PG1_D00357_01_M_XXEN/12.2019
1. Important information ........................................................................... 6
1.1 How to use this manual ................................................................................... 6
1.2 Technical support: Service and support .................................................... 7
1.2.1 First level support .............................................................................................. 7
1.2.2 Repair service ...................................................................................................... 7
1.2.3 Field service ......................................................................................................... 8
1.3 Training courses ................................................................................................. 8
1.4 Delivery conditions ........................................................................................... 8
1.5 Inspection, transport and storage ............................................................... 8
1.6 Warranty and liability ....................................................................................... 9
1.7 Disposal ................................................................................................................. 9
2. Safety instructions ............................................................................... 10
2.1 General safety instructions .......................................................................... 10
2.2 Work activities on electrical installations ................................................ 10
2.3 Intended use ..................................................................................................... 11
2.4 Directions for installation ............................................................................. 11
3. Function ................................................................................................. 13
3.1 IR1575PG1 characteristics ............................................................................ 13
3.2 Product description ........................................................................................ 13
3.3 Function .............................................................................................................. 13
4. Commissioning flow chart .................................................................. 17
4.1 Commissioning of the ISOMETER® functionality ................................. 17
4.2 Commissioning of the insulation fault location function
(EDS) (1) ............................................................................................................... 20
4.3 Commissioning of the insulation fault location function
(EDS) (2) ............................................................................................................... 21

Table of Contents
4IR1575PG1_D00357_01_M_XXEN/12.2019
5. Connection ............................................................................................. 22
5.1 Wiring ................................................................................................................... 22
6. Operation and setting .......................................................................... 25
6.1 Operating elements and displays IR1575PG1 ....................................... 25
6.1.1 Display in the standard mode ..................................................................... 26
6.1.2 Display in the Menu mode ........................................................................... 26
6.1.3 Display in the EDS mode ............................................................................... 27
6.1.4 Function keys .................................................................................................... 27
6.2 Menu structure ................................................................................................. 28
6.2.1 Diagram menu structure .............................................................................. 30
6.3 ISO SETUP menu: ISOMETER® default settings ..................................... 30
6.3.1 Response values Alarm1 and Alarm2 ....................................................... 30
6.3.2 Operating principle of the alarm relays ................................................... 31
6.3.3 Diagram ISO SETUP ......................................................................................... 32
6.3.4 Memory setting (on/off) ................................................................................ 33
6.4 EDS SETUP menu: default settings for fault location .......................... 33
6.4.1 EDS on / auto / 1cycle / off .......................................................................... 33
6.4.2 maxPuls: 10/25 mA ......................................................................................... 34
6.4.3 Diagram EDS-SETUP ....................................................................................... 34
6.5 PASSWORD menu ........................................................................................... 35
6.5.1 Password activation and setting ................................................................ 35
6.5.2 Diagram PASSWORD ...................................................................................... 36
6.6 LANGUAGE menu ............................................................................................ 36
6.6.1 Language setting ............................................................................................. 36
6.6.2 Diagram Language ......................................................................................... 37
6.7 SERVICE menu ................................................................................................... 37
6.8 INFO menu ......................................................................................................... 38
6.8.1 Diagram INFO ................................................................................................... 38
7. Operation with EDS device EDS460-D-... .......................................... 39

Table of Contents
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IR1575PG1_D00357_01_M_XXEN/12.2019
8. Technical data IR1575PG1 ................................................................. 40
8.1 Data in tabular form ....................................................................................... 40
8.2 Standards and approvals .............................................................................. 43
8.3 Characteristic curves ...................................................................................... 44
8.4 Dimension diagram enclosure IR1575PG1 ............................................. 46
8.5 Ordering details ............................................................................................... 47
8.5.1 Standard version .............................................................................................. 47
8.5.2 Label for modified versions ......................................................................... 47
INDEX ........................................................................................................... 48

6IR1575PG1_D00357_01_M_XXEN/12.2019
1. Important information
1.1 How to use this manual
Always keep this manual within easy reach for future reference.
To make it easier for you to understand and revisit certain sections in this manual,
we have used symbols to identify important instructions and information.
The meaning of these symbols is explained below:
This manual is intended for electrically skilles persons working in electrical
engineering and electronics.
This signal word indicates that there is a high risk of danger that will result
in death 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 low level risk that can result in minor or
moderate injury or damage to property if not avoided.
This symbol denotes information intended to assist the user
in making optimum use of the product.
DANGER
WARNING
CAUTION

Important information
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IR1575PG1_D00357_01_M_XXEN/12.2019
1.2 Technical support: Service and support
For commissioning and troubleshooting Bender offers you:
1.2.1 First level support
Technical support by phone or e-mail for all Bender products
 Questions concerning specific customer applications
 Commissioning
 Troubleshooting
Telephone: [phone]*
Fax: [phone]
In Germany only: 0700BenderHelp (Telefon und Fax)
E-Mail: [email protected]
1.2.2 Repair service
Repair, 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 warranty for Bender devices with in-house repair service or
replacement device at no extra cost
Telephone: [phone]** (technical issues)/
[phone]**, -785** (sales)
Fax: [phone]
E-Mail: [email protected]
Please send devices for the repair service to the following address:
Bender GmbH, Repair Service,
Londorfer Str. 65,
35305 Grünberg

Important information
8IR1575PG1_D00357_01_M_XXEN/12.2019
1.2.3 Field service
On-site service for all Bender products
 Commissioning, parameter setting, maintenance, troubleshooting for products
 Analysis of the electrical installation in the building (power quality test, EMC test,
thermography)
 Training courses for customers
Telephone: [phone]**, -762 **(technisch)/
[phone]** (kaufmännisch)
Fax: [phone]
E-Mail: [email protected]
Internet: www.bender-de.com
*Available from 7.00 a.m. to 8.00 p.m. 365 days a year (CET/UTC+1)
**Mo-Thu 7.00 a.m. - 4.00 p.m., Fri 7.00 a.m. - 1.00 p.m.
1.3 Training courses
Bender is happy to provide training regarding the use of test equipment.
The dates of training courses and workshops can be found on the Internet at
www.bender-de.com -> Know-how -> Seminars.
1.4 Delivery conditions
Bender sale and delivery conditions apply. For 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 general delivery conditions for pro-
ducts and services in the electrical industry) set out by the ZVEI (Zentralverband Elekt-
rotechnik- und Elektronikindustrie e. V.) (German Electrical and Electronic
Manufacturer's Association) also applies.
Sale and delivery conditions can be obtained from Bender in printed or electronic for-
mat.
1.5 Inspection, transport and storage
Inspect the dispatch and equipment packaging for damage, and compare the contents
of the package with the delivery documents. In the event of damage in transit, please
contact Bender immediately.

Important information
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IR1575PG1_D00357_01_M_XXEN/12.2019
The devices must only be stored in areas where they are protected from dust, damp,
and spray and dripping water, and in which the specified storage temperatures can be
ensured.
1.6 Warranty and liability
Warranty and liability claims in the event of injury to persons or damage to property are
excluded if they can be attributed to one or more of the following causes:
 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 manufactu-
rer.
 Non-observance of technical data.
 Repairs carried out incorrectly and the use of replacement parts or accessories not
approved by the manufacturer.
 Catastrophes caused by external influences and force majeure.
 Mounting and installation with device combinations not recommended by the
manufacturer.
This operating manual, especially the safety instructions, must be observed by all per-
sonnel working on the device. Furthermore, the rules and regulations that apply for
accident 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 of certain hazardous substances in electrical and electronic
equipment (RoHS directive) apply in the European Community. In Germany, these poli-
cies are implemented through the "Electrical and Electronic Equipment Act" (ElektroG).
According to this, the following applies:
 Electrical and electronic equipment are not part of household waste.
 Batteries and accumulators are not part of household waste and must be
disposed of in accordance with the regulations.
 Old electrical and electronic equipment from users other than private households
 which was introduced to the market after 13 August 2005 must be taken back by
the manufacturer and disposed of properly.
For more information on the disposal of Bender devices, refer to our homepage at
www.bender-de.com -> Service & support.

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IR1575PG1_D00357_01_M_XXEN/12.2019
2. Safety instructions
2.1 General safety instructions
Part of the device documentation in addition to this manual is the enclosed "Safety in-
structions for Bender products".
2.2 Work activities on electrical installations
If the device is used outside the Federal Republic of Germany, the applicable local stan-
dards and regulations must be complied with. The European standard EN 50110 can be
used as a guide.
Only qualified personnel are permitted to carry out the work necessary to
install, commission and run a device or system.
Risk of fatal injury due to electric shock!
Touching live parts of the system carries the risk of
 An electric shock,
 Damage to the electrical installation,
 Destruction of the device.
Before installing and connecting the device, make sure that the
installation has been de-energised. Observe the rules for working on
electrical installations.
Observe the details of the nominal mains voltage and supply voltage
according to the technical data!
DANGER

Safety instructions
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IR1575PG1_D00357_01_M_XXEN/12.2019
2.3 Intended use
The ISOMETER® is intended for:
 monitoring the insulation resistance of IT systems
 localisation of insulation faults using EDS460-D-... insulation fault evaluators
Any other use, or any use which goes beyond the foregoing, is deemed to be used other
than for the intended purpose. The Bender companies shall not be liable for any losses
or damage arising therefrom.
Use for the intended purpose also includes
 compliance with all information in the operating instructions and
 compliance with test intervals.
As a basic principle, our "General conditions of Sale and Delivery" shall apply. At the la-
test, these shall be available to the operator when the contract is concluded.
2.4 Directions for installation
In order to check the proper connection of the device, it is recommended to carry out a
functional test using a insulation fault against earth, e.g. via a suitable resistance, before
starting the ISOMETER®.
Only one insulation monitoring device may be used in each
interconnected IT system.
When insulation or voltage tests are to be carried out, the device shall be
isolated from the system for the test period.
The terminals and KE shall be connected by a separate wire to the
protective conductor (PE). If the terminals L1, L2, L3 of the device are
connected to a system under operation, the terminals and KE must not be
disconnected from the protective conductor (PE).
CAUTION
CAUTION

Safety instructions
12 IR1575PG1_D00357_01_M_XXEN/12.2019
The devices will be delivered with the following factory settings:
Please check if the basic setting of the ISOMETER® fulfils the requirements of the system
to be monitored.
ISO SETUP: Alarm 1/Alarm 2 = 40 kΩ/10 kΩ
ISO SETUP: Operating prin-
ciple K1/K2 =N.O. test
(N/O operation with relay test)
ISO SETUP: Memory = off
EDS SETUP: EDS = auto
EDS SETUP: MaxPuls = 25 mA
When an AC system includes galvanically connected DC circuits, the
following shall be considered:
Insulation faults in DC circuits can only be monitored correctly when the
rectifiers carry a continuous load of 5…10 mA.

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IR1575PG1_D00357_01_M_XXEN/12.2019
3. Function
3.1 IR1575PG1 characteristics
 ISOMETER® for IT AC systems with galvanically connected rectifiers and for
IT DC systems Unup to 480 V
(IT = unearthed electrical systems)
 Automatic adaptation to the existing system leakage capacitance Ceup to 60 mF
 measuring principle (European Patent: EP 0 654 673 B1)
 Generation of the test current necessary for selective insulation fault location
 Two separately adjustable ranges of response value of 2 kΩ ... 1 MΩ each
(Alarm1, Alarm2)
 Two-line LC display
 Connection monitoring of the measuring leads to the IT system and to earth
 Automatic device self test
 Option „W“:
This option provides: improved shock and vibration resistance for use in ships, on
rolling stock and in seismic environment.
3.2 Product description
The ISOMETER® Type IR1575PG1 monitors the insulation resistance of 3(N)AC/AC and
DC IT systems. AC systems monitored by the IR1575PG1 may include extensive DC sup-
plied loads (such as converters). The device automatically adapts itself to the existing
system leakage capacitance.
3.3 Function
The ISOMETER® IR1575PG1 is connected between the unearthed system and the pro-
tective conductor (PE).
The response values and other function parameters are set via the function keys. The
parameters are indicated on the LC display and are stored in a non-volatile memory (EE-
PROM) after the setting is completed.
The IR1575PG1 superimposes a microprocessor-controlled pulsating measuring volta-
ge on the system being monitored using the AMP measuring principle. The "adaptive
measuring pulse" is a patent developed and patented by Bender (European Patent:
EP 0 654 673 B1). The measuring pulse consists of positive and negative pulses of the
same amplitude. The period depends on the respective system leakage capacitances
and the insulation resistances of the system being monitored.
AMPPlus

Function
14 IR1575PG1_D00357_01_M_XXEN/12.2019
An insulation fault between IT system and earth closes the measuring circuit. After de-
tecting the measuring values, the evaluation circuit calculates the insulation resistance
which is indicated on the LC display after the measuring time.
The measuring time is determined by the system leakage capacitances, the insulation
resistance, and the system-related interferences. System leakage capacitances do not
influence the measuring accuracy.
If the reading is below the selected response values Alarm1/Alarm2, the associated
alarm relays respond and the alarm LEDs Alarm1/2 light up and the measuring value is
indicated on the display (in the event of DC insulation faults, the faulty supply line is in-
dicated). If the terminals R1/R2 are bridged (external RESET button [NC contact] or wire
bridge), the fault message will be stored. Pressing the RESET button or opening the
connection R1/R2, resets the fault message, provided that the currently displayed insu-
lation resistance is at least 25% above the actual response value. The fault memory be-
haviour can also be set in the "ISO SETUP" menu, under "Memory: on/off". In this case
the terminals R1/R2 remain unused.
By pressing the TEST button, the function of the ISOMETER® IR1575PG1 can be tested.
In this way, all essential measuring functions as well as connections to the system and
to earth are checked. This self test can automatically be carried out every 24 hours. Nor-
mally, the self test is carried out after switching the supply voltage on.
Self test
In order to ensure high measuring reliability, the ISOMETER IR1575PG1 provides com-
prehensive self test functions. After switching the supply voltage on, all internal measu-
ring functions, the components of the process control such as data and parameter
storage as well as the connections L1 and L3 to the system and to earth are checked
using the self test functions (L2 will not be monitored). The progress of the self test is
shown on the display by a bar graph. Depending on the system conditions, the self test
is running for approximately 15… 20 s, then the message "Test ok" appears on the LC
display for approximately 2 s. Then the device returns to normal measuring mode and
the currently measured value is displayed after the expiry of the measuring time.
When a device error or connection fault is detected, the message "Error" will appear on
the display, the system fault LED (Alarm LED2) lights, the relay K2 (21-22-24) switches
and the respective alarm message (see table) is indicated. When such a system fault oc-
curs, a self test will be started after approximately one minute. When no more malfunc-
tion is detected, the alarm message is deleted automatically, and the system fault LED
extinguishes.
During operation, the self test function can be started by pressing the TEST button (in-
ternal or external). The alarm relays Alarm1/2 only switch after starting the self test func-
tion by pressing the TEST button.

Function
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IR1575PG1_D00357_01_M_XXEN/12.2019
Insulation fault location
Another function of the IR1575PG1 is the generation of the test current for selective in-
sulation fault location. When the value of the insulation resistance falls below the set re-
sponse values Alarm1 and Alarm2, the IR1575PG1 generates the respective test current.
In combination with an EDS460-D-... insulation fault evaluator and the associated
measuring current transformers connected to it, the insulation fault can be selectively
detected. If no test current > 1.5 mA can be generated, the alarm message "No EDS
funct." will be indicated. This may be caused by a device defect, loss of voltage or over-
temperature in the device. Another cause may be a response value selected too high re-
sulting in an increased insulation resistance too high to generate a sufficient test
current.
Alarm messages and corrective actions
Alarm message Description Corrective actions
System connec-
tion?
No low-resistance con-
nection of the termi-
nals L1, L3 to the
system
1. Check the wiring of the terminals L1, L3
to the system
2. Press the TEST button
3. Switch the supply voltage on and off
4. Check the fuse
Connection PE? No low-resistance con-
nection between ter-
minal and KE to
earth (PE)
1. Check wiring of terminal and KE to
earth (PE)
2. Press the TEST button
3. Switch the supply voltage on and off
Device error x Internal device error 1. Press the TEST button
2. Switch the supply voltage on and off
3. Contact Bender
Insulation fault The insulation resis-
tance value has fallen
below the set response
value
1. Reduce the response value
2. Locate and clear insulation fault
(EDS460-D-...)
No EDS Funct. A test current cannot be
generated
1. Check response value
2. Check supply voltage

Function
16 IR1575PG1_D00357_01_M_XXEN/12.2019
Reset sequence control
Proceed as follows:
1. Press and hold down the RESET button
2. Press and hold down the MENU button
3. Press the TEST button for at least 2 s
After executing the steps described above, the sequence control including the self test
are restarted again.
If the on/off switching of the supply voltage is not possible for technical
reasons, a RESET of the sequence control is to be carried out by pressing the
buttons "RESET", "MENU" and "TEST" in succession.

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IR1575PG1_D00357_01_M_XXEN/12.2019
4. Commissioning flow chart
4.1 Commissioning of the ISOMETER® functionality
The encircled figures in the three pages of the flow charts correspond to the figures in
the legend to wiring diagram (see page 22).
Commissioning of the ISOMETER® (1)
Is the system to be monitored an
unearthed system (IT system) ? The IR1575PG1 is not suitable for this application (contact ender).
Device connection Optional device
connectionl
no
no
yes
Connect the terminals L1, L2 and L3
according to the wiring diagram to
the system to be monitored U
n .
Connect the supply voltage Us
to the terminals A0(-) and A1(+)
or A0 and A2 (AC 400 V).
Consider the indications 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
Output contacts of the alarm relays
Alarm1 (11-12-14)
Alarm2 (21-22-24)
10
9
7
8
Deenergize the installation
before connecting the device !
Recommended wire cross section of
connecting cable
single wire 0.2 ... 4 mm2
flexible 0.2 ... 2.5 mm2
Is the voltage to be monitored
Un AC 480 V ?
or
Un DC 480 V ?
yes
Connect the two PE connections
and KE separately to the
equipotential bonding
6
2
4
5
1
The IR1575PG1 is not suitable for this
application (contact ender).

Commissioning flow chart
18 IR1575PG1_D00357_01_M_XXEN/12.2019
Commissioning of the ISOMETER® (2)
Connect the supply voltage
The A-ISOMETER carries out a self test.
The insulation value is being
displayed after completion
of the measuring process.
Shall the default setting
be changed?
Alarm1 = 40 k hm
Alarm2 = 10 k hm
K1/K2 = N/ operation
Memory = off
no
yes
Does one of the alarm
LEDs light ?
Connect the voltage of the
system to be monitored
Select IS SETUP
(see chapter operation and setting)
no
yes
The insulation value of the system
being monitored is below the
set respone value. Change the
response value or improve the
insulation state of the system.

Commissioning flow chart
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IR1575PG1_D00357_01_M_XXEN/12.2019
Commissioning of the ISOMETER® (3)
In order to check the proper
connection, a functional test
is to be carried out using a
suitable resistance:
Size of the resistance:
50% of the preset response
value Alarm2.
Check the connecting leads !
Is system voltage Un available
across the terminals L1/L2/L3 ?
Check the voltages with a voltmeter.
yes
yes
Remove the resistor !
The IR1575PG1 is correctly
connected and functions reliably!
Do both alarm LEDs light ?
Did the alarm relays switch ?
yes
no
Do both alarm LEDs light ?
Did the alarm relays switch ?
Alarm LEDs extinguished ?
Did the alarm relays change
their position ?
no

Commissioning flow chart
20 IR1575PG1_D00357_01_M_XXEN/12.2019
4.2 Commissioning of the insulation fault location function (EDS) (1)
EDS460
EDS460
EDS460-D-...