Bender ISOMETER isoLR275 User manual

Manual
EN
ISOMETER® isoLR275
Coupling device AGH-LR
Insulation monitoring device for unearthed
IT AC, AC/DC and DC systems
for electrical installations with a low level of resistance
up to AC 793 V/DC 1100 V
Software version: D369 V2.1
isoLR275_D00127_01_M_XXEN/06.2020

Bender GmbH & Co. KG
Postbox 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.
Reproduction only with permission of the publisher.
Subject to alterations!
Photos: Bender archives

3
Table of contents
isoLR275_D00127_01_M_XXEN/06.2020
1. Safety instructions ....................................................................................................... 6
1.1 Intended use ..................................................................................................................... 6
1.1.1 Personnel .................................................................................................................... 6
1.1.2 Hazards when handling the ISOMETER® isoLR275 ...................................... 6
1.1.3 Note .............................................................................................................................. 6
1.2 Explanation of symbols and notes ............................................................................ 7
1.3 Directions for installation ............................................................................................. 7
2. Function ......................................................................................................................... 9
2.1 Device features isoLR275 ............................................................................................. 9
2.2 Device features AGH-LR ................................................................................................ 9
2.3 Product description ........................................................................................................ 9
2.4 Description of function ............................................................................................... 10
2.4.1 Measurement profiles .......................................................................................... 11
2.4.2 Self test ...................................................................................................................... 11
2.4.3 Current output for external measuring instrument .................................. 12
2.4.4 Real-time clock ....................................................................................................... 12
2.4.5 Coupled IT systems ............................................................................................... 12
2.4.6 Function input F1/F2 ............................................................................................ 13
2.4.7 ISOnet function (COM SETUP) ........................................................................... 14
3. Commissioning flow chart ....................................................................................... 16
4. Installation and connection ..................................................................................... 19
4.1 Mounting of the isoLR275 .......................................................................................... 19
4.2 Wiring diagram .............................................................................................................. 19
5. Operation and configuration .................................................................................. 21
5.1 Display and operating elements ............................................................................. 21
5.1.1 Display in standard mode .................................................................................. 22
5.1.2 Display in menu mode ......................................................................................... 22
5.1.3 Control buttons ...................................................................................................... 23
5.2 Menu structure and menu mode ............................................................................ 24
5.2.1 Navigation within the menu ............................................................................. 24
5.2.2 Parameter change ................................................................................................. 24
5.2.3 Changing from the menu mode to the standard mode ......................... 25
5.2.4 Diagram menu structure .................................................................................... 25
5.3 Menu HISTORY INFO .................................................................................................... 26
5.3.1 Diagram HISTORY INFO ....................................................................................... 27

Table of contents
4isoLR275_D00127_01_M_XXEN/06.2020
5.4 Menu ISO SETUP: Setting of the basic
ISOMETER® functions .................................................................................................. 27
5.4.1 Response values Alarm1 and Alarm2 ............................................................ 28
5.4.2 Operating principle of the alarm relays ........................................................ 28
5.4.3 Memory setting (on/off) ..................................................................................... 29
5.4.4 Current output for external measuring instruments ............................... 30
5.4.5 Adjusting the current output ........................................................................... 30
5.5 Menu ISO ADVANCED - Extended functions ...................................................... 31
5.5.1 External coupling device (AGH: LR) ................................................................ 31
5.5.2 Adaptation of the system leakage capacitance
(Cemax: 150 μF) ..................................................................................................... 31
5.5.3 Changing the measurement method
(Measure: AMP4) ................................................................................................... 31
5.5.4 Repetition time for the automatic self test (Autotest: 24h) ................... 32
5.5.5 Setting the real-time clock (Clock) .................................................................. 32
5.5.6 Setting the date (Date) ........................................................................................ 32
5.5.7 Start-up time for the automatic self test (Test) .......................................... 33
5.5.8 Diagram ISO ADVANCED .................................................................................... 33
5.6 Menu COM SETUP - BMS interf ace ........................................................................ 34
5.6.1 Bus address "Addr:" .............................................................................................. 34
5.6.2 ISOnet function ...................................................................................................... 34
5.6.3 ISO monitor ............................................................................................................. 34
5.6.4 Diagram COM SETUP ........................................................................................... 35
5.7 PASSWORD menu ......................................................................................................... 36
5.7.1 Setting and activating the password ............................................................. 36
5.7.2 PASSWORD diagram ............................................................................................ 36
5.8 LANGUAGE Menu ......................................................................................................... 37
5.8.1 Language setting .................................................................................................. 37
5.8.2 Language diagram ............................................................................................... 37
5.9 SERVICE menu ................................................................................................................ 37
6. Serial interface ........................................................................................................... 38
6.1 RS-485 interface with BMS protocol ...................................................................... 38
6.2 Topology RS-485 network ......................................................................................... 39
6.2.1 Correct arrangement ........................................................................................... 39
6.2.2 Wrong arrangement ............................................................................................ 39
6.2.3 Wiring ........................................................................................................................ 39
6.3 BMS protocol .................................................................................................................. 40
6.3.1 BMS master .............................................................................................................. 40
6.3.2 BMS slave ................................................................................................................. 41
6.3.3 Commissioning of an RS-485 network with BMS protocol .................... 42

Table of contents
5
isoLR275_D00127_01_M_XXEN/06.2020
7. Technical data isoLR275 with AGH-LR .................................................................. 44
7.1 isoLR275 data in tabular form ................................................................................... 44
7.2 AGH-LR data in tabular form ..................................................................................... 47
7.3 Standards, approvals and certifications ................................................................ 48
7.4 Ordering information ................................................................................................... 48
7.5 Label for modified versions ....................................................................................... 48
7.6 Characteristic curves .................................................................................................... 49
INDEX ................................................................................................................................ 52

Safety instructions
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isoLR275_D00127_01_M_XXDE/06.2020
1. Safety instructions
1.1 Intended use
The ISOMETER® is intended for:
•Monitoring the insulation resistance of IT systems
Use which deviates from or is beyond the scope of these technical specifications is con-
sidered non-compliant. The Bender companies shall not be liable for any losses or da-
mage arising therefrom.
Intended use also implies:
•Compliance with all information in this operating manual and
•Compliance with any test intervals.
1.1.1 Personnel
Only appropriately qualified personnel may work on the ISOMETER®. Qualified means
familiar with the installation, commissioning and operation of the product and with
training appropriate to the work. Personnel must have read and understood the safety
section and warning information in this operating
manual.
1.1.2 Hazards when handling the ISOMETER® isoLR275
The ISOMETER® is constructed according to the state-of-the-art and the recognised
technical safety rules. Nevertheless, when it is being used, hazards may occur to the life
and limb of the user or third parties or there may be adverse effects on the ISOMETER®
or on other valuable property. Only use the
ISOMETER®:
•As intended
•In perfect working order
Any faults which may impair safety must be eliminated immediately. Impermissible mo-
difications and the use of spare parts 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®. Informa-
tion plates must always be clearly legible.
Damaged or illegible signs must be replaced immediately.
1.1.3 Note
Make sure that the operating voltage is correct!
Prior to insulation and voltage tests, the ISOMETER® must be disconnected from the po-
wer system for the duration of the test.

Safety instructions
7isoLR275_D00127_01_M_XXDE/06.2020
In order to check the proper connection of the device, it is recommended to carry out a
functional test.
Make sure that the basic settings meet the requirements of the IT system.
Children and unauthorised persons must not have access to or contact with the ISOME-
TER®.
1.2 Explanation of symbols and notes
Important instructions and information are marked by following symbols:
1.3 Directions for installation
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 low-level risk that can result in mi-
nor 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.
Risk of property damage due to unprofessional
installation!
If more than one insulation monitoring device is connected to
aconductively connected system, the system can be damaged. If
several devices are connected, the device does not function and
does not signal insulation faults. Make sure that only one insula-
tion monitoring device is connected in each conductively connec-
ted system.
Ensure disconnection from the 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.
DANGER
WARNING
CAUTION
CAUTION

Safety instructions
8
isoLR275_D00127_01_M_XXDE/06.2020
The terminals and KE have to be connected by a separate wire to the protective
conductor (PE). If the terminals L1, L2 of the device are connected to an IT system under
operation, the terminals and KE must not be disconnected from the protective con-
ductor (PE).
In order to check the proper connection of the device, it is recommended to carry out a
functional test using an insulation fault, e.g. via a suitable resistance, before starting the
ISOMETER®.
The device variant -3… is delivered with the following factory setting:
Please check if the factory setting of the ISOMETER® complies with the 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 electrical installation.
ISO SETUP: Alarm 1/Alarm 2
(response values) =4kΩ/1kΩ
ISO SETUP: Operating mode K1/K2 = N/O operation (N.O.)
ISO SETUP: Memory = off
ISO ADVAN-
CED:
System leakage capacitance
Measurement method
=
=
150 μF
AMP
COM SETUP: Bus address = 3 (Slave)
When the AC system being monitored contains galvanically cou-
pled DC circuits:
An insulation fault can only be monitored correctly when the rec-
tifiers carry a continuous load current of 5…10 mA.

Safety instructions
9isoLR275_D00127_01_M_XXDE/06.2020

Function
10
isoLR275_D00127_01_M_XXDE/06.2020
2. Function
2.1 Device features isoLR275
•ISOMETER® for IT AC systems with galvanically connected rectifiers or converters
•and for IT DC systems (IT = unearthed systems)
•Particularly suited for monitoring electrical installations with a low level of resistance
•isoLR275 is always operated in conjunction with AGH-LR
•Automatic adaptation to the existing system leakage capacitance
•AMPPLUS-Measurement method (European Patent: EP 0 654 673 B1)
•Choice of measurement methods to meet different requirements
•Two separately adjustable response ranges 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 Ben-
der devices (RS-485 galvanically isolated)
•Internal disconnection of the ISOMETER® from the IT system to be monitored (via con-
trol signal; terminals F1/F2), e.g. if several
ISOMETER®s are interconnected
•Current output 0(4)…20 mA (electrically isolated) in relation to the insulation value
measured in the system
2.2 Device features AGH-LR
•Coupling device required for ISOMETER® isoLR275,
•each AGH-LR is specially adapted to the corresponding isoLR275
•Nominal voltage range AC 0…793 V and DC 0…1,100 V
•DIN rail mounting
2.3 Product description
The isoLR275 ISOMETER® in conjunction with the AGH-LR coupling device monitors the
insulation resistance of IT systems. It is suitable for universal use in 3(N)AC, AC/DC and
DC systems. AC systems may include extensive DC-supplied loads, such as converters
or thyristor-controlled DC drives. The adaptation to the existing system leakage capaci-
tances takes place automatically.

Function
11 isoLR275_D00127_01_M_XXDE/06.2020
Only use the AGH-LR coupling device supplied with the device for adaptation of the no-
minal voltage range.
The isoLR275 can share the BMS bus with other bus devices.
2.4 Description of function
The isoLR275 ISOMETER® is connected between the unearthed system (IT system) and
the protective conductor (PE) using the AGH-LR coupling device.
The response values and other function parameters are set via the function buttons.
The parameters are indicated on the LC display and are stored in a non-volatile memory
(EEPROM).
A microprocessor-controlled pulsating AC measuring voltage is superimposed on the
IT system to be monitored (AMPPLUS-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. The evalua-
tion circuit calculates the insulation resistance which is indicated on the LC display or
the external kW measuring instrument after the measuring time has expired.
The measuring time is dependent on the selected measurement method, the system
leakage capacitance, the insulation resistance and the system-related disturbances.
System leakage capacitances do not influence the measuring accuracy.
If the reading is below the selected response values Alarm 1/Alarm 2, the associated
alarm relays respond, the LEDs "Alarm 1/2“ light up and the measuring value is indica-
ted on the LC display (in the event of DC insulation faults, the faulty supply line is indi-
cated). If the terminals R1/R2 are bridged (external reset button [N/C contact] or wire
jumper), the fault message will be stored. Pressing the reset button, resets the fault
message, provided that the insulation resistance is at least 25 % and at least 1 kW above
the actual response value. The fault memory behaviour can also be set in the "ISO SE-
TUP“ menu, by selecting the submenu Memory: on/off.
The devices isoLR275 and AGH-LR are ideally adapted to each
other. The corresponding combination device required in each
case can be identified via the serial number on the device label.
For repair work, both devices should be sent in in order to guaran-
tee measuring accuracy.
Otherwise, the measuring accuracy might be reduced!

Function
12
isoLR275_D00127_01_M_XXDE/06.2020
*) AMPPLUS-measurement method
(Adaptive Measuring Pulse), a measurement method developed by Bender (European
Patent: EP 0 654 673 B1).
2.4.1 Measurement profiles
The measuring circuit of the isoLR275 can be adjusted to different requirements in the
ISO ADVANCED/MEASURE menu:
DC = Suitable for pure AC systems
AMP = Suitable for converters with frequencies > 10 Hz
AMP2 = Suitable for converters with frequencies < 10 Hz
AMP3 = Suitable for converters with frequencies < 1 Hz
AMP4 = Suitable for installations with strongly varying DC components
Also refer to the table of measurement profiles starting from Seite 31.
2.4.2 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 components of the process control such as data and parameter memory
as well as system and earth connections are checked using the self test functions. The
progress of the self test is shown on the display by a bar graph. Depending on the IT sys-
tem conditions, the self test is completed after 15…20 seconds, then the message "Test
ok!“ appears on the display for approximately two seconds. Then the device returns to
the normal measuring mode and the currently measured value will be displayed once
the measuring time has elapsed.
When a device or connection fault is found, the message "!Error!“ appears on the dis-
play, the device error LED lights, the relay K2 (21-22-24) switches and the corresponding
fault message (see table) will be indicated. If such a device error occurs, another self test
is started after approximately one minute. If no more faults are detected, the fault mes-
sage will automatically be deleted, the system fault LED will go out.
During operation, the self test function can be started by pressing the test button (in-
ternal or external). The self test can also be started automatically every hour or every 24
hours by selecting the "ISO ADVANCED: Autotest:“ menu.
The alarm relays 1/2 only switch after starting the self test function by pressing the test
button, that means, in case of an automatic self test the relays do not switch.

Function
13 isoLR275_D00127_01_M_XXDE/06.2020
2.4.3 Current output for external measuring instrument
The current output of isoLR275 is electrically isolated from the device electronics and
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 36. In addition, the centre scale mark can be set to 28 kΩ or
120 kΩ, related to an external measuring instrument.
2.4.4 Real-time clock
The real-time clock serves as a time base for the memory and self test functions. First,
the correct time and date must be set in the "ISO ADVANCED“ menu. If time and date
are not set, a "C“ (clock) is flashing in the standard display. In the event of a supply vol-
tage failure, time and date will be stored for at least 30 days.
When the 24 h self test is activated in the ISO ADVANCED menu, it is possible to set the
time (hour) for carrying out the self test by means of the
"TEST: 12:00" menu. Then a self test will be started automatically once a day exactly at
the preset time. If the 1 h test has been selected, the self test is automatically carried out
every full hour.
2.4.5 Coupled IT systems
When using ISOMETER®s in IT systems, make sure that only one active
ISOMETER® is connected in each interconnected system. If IT systems are interconnec-
ted via coupling switches, make sure that ISOMETER®s not currently used are discon-
nected from the IT system and deactivated. IT systems coupled via diodes or
capacitances may also influence the insulation monitoring process so that a central
control of the different ISOMETER®s is required.
Alarm message Description Actions
Connection PE?
No low-resistance connec-
tion between the terminals
and KE to earth.
Check the wiring of the terminals and KE
to earth (PE)
Press the "TEST" button
Switch the supply voltage on and off
Device error x Internal device error
Press the "TEST" button
Switch the supply voltage off and on
Please contact Bender
If, for functional reasons, thesupply voltage cannot be switched on
or off, a reset of the sequence control system can be carried out by
pressing the buttons "ESC", "RESET" and "MENU“ simultaneously.

Function
14
isoLR275_D00127_01_M_XXDE/06.2020
2.4.6 Function input F1/F2
The ISOMETER® can be connected or disconnected from the IT system and set to
STANDBY mode with the function input F1/F2. If the input F1/F2 is bridged, the connec-
tions to the coupling device AK1/AK2 are switched off via internal coupling relays, the
measuring function is stopped and the message "STANDBY" appears on the display.
Instead of the most recently measured value the value > 1 MΩ will be indicated. Fur-
thermore, the alarm relays and alarm LEDs stop signalling alarm messages.
After opening the function input F1/F2, the connection to the IT system will be restored
and a completely new insulation resistance measurement cycle is started.
This function can be used to disconnect an isoLR275 selectively in IT systems via the au-
xiliary contacts of the respective coupling switch. One coupling switch each in a line-
type or ring-type arrangement can deactivate a subsequent isoLR275 to ensure that
only one ISOMETER® is active in each galvanically connected IT system.
If in a ring-type arrangement all coupling switches are closed, theoretically all
ISOMETER®s would be deactivated. In order to prevent this, a BMS master (BMS addr. 1)
monitors the condition of the function input F1/F2 of all slave ISOMETER®s. When all sla-
ve ISOMETER®s are in the STANDBY mode, the insulation monitoring function of the
master ISOMETER® and hence the function input F1/F2 of the master are without func-
tion in this mode. Details are illustrated in the graphic below:
isoLR275
AGH-LR
isoLR275
AGH-LR
isoLR275
AGH-LR
isoLR275
AGH-LR
BMS bus
ss
ss
Addr. Addr.
Addr. Addr.
RS-485)

Function
15 isoLR275_D00127_01_M_XXDE/06.2020
2.4.7 ISOnet function (COM SETUP)
To activate this function, select "ISOnet=ON“ in the COM SETUP menu. This function is
a type of scanning function. The BMS master with activated ISOnet function controls
the ISOnet slave devices via the BMS bus. When the master ISOMETER® has finished one
measuring cycle, the authorisation for insulation monitoring is passed on to the next
higher BMS address. During the insulation monitoring process, all other ISOMETER®s
are in the STANDBY mode. In this way it is prevented that ISOMETER®s influence each
other 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 measure-
ment is not permanently carried out. This has the advantage that no auxiliary contacts
of a coupling switch are required. Furthermore, this solution is recommended for IT sys-
tems coupled via capacitances or diodes.
Each ISOnet slave checks the network for an ISOnet master. If no master exists, the fault
"ISOnet Master?" will be output on the display. With the ISOnet function activated, the
function input F1/F2 is automatically deactivated.
isoLR275
AGH-LR
isoLR275
AGH-LR
isoLR275
AGH-LR
isoLR275
AGH-LR
BMS bus RS-485)
Addr. Addr.
Addr. Addr.
IT system 1 IT system 2
IT system 3
IT system 4

Commissioning flow chart
16
isoLR275_D00127_01_M_XXDE/06.2020
3. Commissioning flow chart
The encircled figures in the flow chart correspond to the figures in the legend to the wi-
ring diagram.
Commissioning of the ISOMETER® (1)
7
Is the system to be monitored an
unearthed system (IT system)?
isoLR is not suitable for this
application( contact Bender)
Device connection Optional device
connection
no
no
yes
The terminals AK1 and AK2 must be
connected by means of an AGH-LR
to Unof the system to be monitored
An external kΩmeasuring instrument
at M+/M-
Scale centre point: 28 kΩor 120 kΩ
Output current: 0/4...20 mA
Connect the supply voltage Us
to the terminals A1/+ and A2/-. Consider
the details 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 Ωresistor is connected
at the beginning and the end of the
network.
13
12
11
8
10
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 maximum nominal voltage
Un ≤AC 793 V
and is Un≤DC 1100 V
yes
The two PE connections and KE
must be connected separately to the
equipotential bonding.
6
2
3
4
5
1
isoLR is not suitable for this
application( contact Bender)

Commissioning flow chart
17 isoLR275_D00127_01_M_XXDE/06.2020
Commissioning of the ISOMETER® (2)
Connect the supply
voltage US
The ISOMETER carries out a
self test. The display indicates
the insulation value after nishing
the measurement
Shall the basic setting
be changed?
Alarm1 = 4 kΩ
Alarm2 = 1 kΩ
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 Unof the
IT system to be monitored

Commissioning flow chart
18
isoLR275_D00127_01_M_XXDE/06.2020
Commissioning of the ISOMETER® (3)
In order to check the proper
connection, a functional test
using a suitable resistance is
to be carried out.
Size of the resistance:
50% of the preset response
value Alarm 2.
Check the connecting leads !
Is voltage Un applied to the
terminals L1/L2 ?
of the coupling device AGH-LR?
Check the voltages with a suitable
voltmeter !
yes
yes
Remove the resistor !
isoLR 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 the output relays change
their position ?
no

Commissioning flow chart
19 isoLR275_D00127_01_M_XXDE/06.2020

Installation and connection
20
isoLR275_D00127_01_M_XXDE/06.2020
4. Installation and connection
4.1 Mounting of the isoLR275
For UL applications:
High Voltage Coupler AGH-PV should be mounted min. 30.8 mm away from the walls of
a metal enclosure and uninsulated grounded parts and uninsulated live parts.
4.2 Wiring diagram
The terminals A1/+ and A2/- are to be connected to the supply voltage Us
according to IEC 60364-4-43, that means, the connections are to be protected against
short-circuit by means of a protective device (a 6 A fuse is recommended).
For UL and CSA applications, the use of 5 A fuses 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-LR the IT system being monitored can be omit-
ted 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 reset button may only be connected to one
ISOMETER®. A parallel connection of several test and reset inputs for
collective ISOMETER® testing is not allowed.
Install the isoLR275 and the AGH-LR with a distance of at least
30 mm to all adjacent devices to ensure compliance with
prescribed temperature limits.
The cable lengths between AGH-LR and isoLR275 must not exceed
0.5 m.
For UL applications:
Use 60 °C/75 °C copper conductors only!
Tightening torque: isoPV: 0.6 Nm…0.8 Nm, AGH-PV: 0.5 Nm