Bender PEM735 User manual

Manual
EN
PEM735 Measuring case
Measuring and demonstration case
PEM735-measuring_case_D00240_00_M_XXEN/12.2015 B 9830 0014

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

3
Tabe of Contents
PEM735-measuring_case_D00240_00_M_XXEN/12.2015
1. Function and safety ................................................................................ 5
2. Content of the measuring case ............................................................. 6
3. Connecting the measuring case ........................................................... 7
3.1 Front plate ............................................................................................................ 8
3.2 Wiring panel side ............................................................................................... 9
4. Current measurement ......................................................................... 11
4.1 Application of the Rogowski coils ............................................................. 12
4.1.1 Settings on the case ....................................................................................... 13
4.1.2 Mounting Rogowski coils ............................................................................. 14
4.1.3 Settings on the PEM735 ................................................................................ 14
4.2 Application of AUX transformers ............................................................... 15
4.2.1 Settings on the case ....................................................................................... 16
4.2.2 Mounting AUX transformers ....................................................................... 16
4.2.3 Settings PEM735 .............................................................................................. 16
4.3 Use of 3 Rogowski coils and 1 AUX transformer .................................. 17
4.3.1 Settings on the case ....................................................................................... 17
4.3.2 Mounting transformer ................................................................................... 17
4.3.3 Settings PEM735 .............................................................................................. 17
5. Voltage measurement ......................................................................... 18
5.1 Overview material for voltage measurement ....................................... 18
6. Digital inputs and relay outputs ....................................................... 19
6.1 Digital inputs DI1, DI2, DIC ........................................................................... 19
6.2 Relay outputs RO1…2 ................................................................................... 19
7. Network .................................................................................................. 20

Table of Contents
4PEM735-measuring_case_D00240_00_M_XXEN/12.2015
8. Technical data ........................................................................................ 21
9. Ordering information ........................................................................... 23
INDEX ............................................................................................................ 25

Function and safety
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
1. Function and safety
The PEM735 measuring and demonstration case is used for
mobile measurements to analyse the voltage quality accord-
ing to DIN EN 50160 (measurement according to IEC 61000-
4-30 class A).
For the use of this measuring case, specialist knowledge is
required.
It is essential to follow the existing safety regulations!
About this manual
In the schematic presentation, the elements belonging to the Rogowski coils are de-
picted in pink and all elements belonging to the AUX transformers are depicted in
green.
Risk of fatal injury from electric shock!
Incorrect wiring of the measuring voltage cables may cause a short-circuit
of the installation, arcs and high short-circuit currents.
The secured side of the measuring voltage cable (longer plug) must be
connected to the installation!
Risk of fatal injury from electric shock!
AUX transformers may not be operated as an
open circuit on the secondary side!
Connected AUX transformers must be short-
circuited with a jumper wire when not in use!
DANGER
DANGER
W1
W2
W3
W4
11
12
42
41
32
31
22
21
Rogowski

Content of the measuring case
6PEM735-measuring_case_D00240_00_M_XXEN/12.2015
2. Content of the measuring case
 Universal measuring device PEM735 (IP address 192.168.0.10)
 Integrated WLAN router (IP address 192.168.0.254; admin/admin)
 4 flexible Rogowski coils and transducers for current measurement 100…4000 A
 1 current transformer clamp C112 (1000 A; 5 kHz)
 1 current transformer clamp C148 (configurable 250/500/1000 A; 1 kHz)
 5 cables with fuses for voltage measurement
 Safety test probes (crocodile clips, magnetic test probes, test probes for use with
push-wire terminals)
 Trolley
 Case can be locked (padlock not included)
Abb. 2.1: Content of the measuring case

Connecting the measuring case
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
3. Connecting the measuring case
For your safety, consider the sequence of the work steps:
1. Configure measuring case mechanically (insert jumper wires for the trans-
formers used, adjust transducers for Rogowski coils)
2. Install measuring current transformer
3. Commission measuring case
4. Configure PEM735
5. Install measuring voltage cables
The measuring case is operated with 230 V, 50 Hz. The connecting cable is included.

Connecting the measuring case
8PEM735-measuring_case_D00240_00_M_XXEN/12.2015
3.1 Front plate
The case contains the PEM735 connected to the front plate, a router, the transducers for
the Rogowski coils and the jumper wires to configure the transformers being used.
Fig. 3.1: Front plate
Legend front plate
No. Description
1Overview of the DIP switch settings for the transducers of the Rogowski coils
2Transducers for the Rogowski coils
3Jumper wire slots to configurate the measuring current transformers in use
4Slots for replacement jumper wires
5Universal measuring device PEM735
W1
W2
W3
W4
11
12
42
41
32
31
22
21
Rogowski
kvarh
kWh
PEM735
LINETRAXX®
ENTER ESC
8
1
8
1
8
1
8
1
W3 W4W1 W2
12
4
5
3

Connecting the measuring case
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
3.2 Wiring panel side
At the side of the measuring case you can find the
 Power supply of the measuring case
 Voltage transformer inputs
 Measuring current transformer inputs
 Network connection input
 Digital inputs
 Relay outputs
Fig. 3.2: Wiring panel side
L1
L2
L3
N
PE
Ethernet
AUX
W4
42
41
W3
W2
W1
31
22
21
32
12
11
Rogowski
10
RO24
RO23
RO14
RO13
DI2
DI1
DIC
1
2
6
7
5
4
3

Connecting the measuring case
10 PEM735-measuring_case_D00240_00_M_XXEN/12.2015
Legend wiring panel side
No. Description
1 On/off switch of the measuring case
2 Measuring voltage inputs
3 Power supply socket for measuring case
4 Ethernet connection socket
5 Measuring current transformer inputs
6 Digital inputs and relay outputs
7 Connection Rogowski coils

Current measurement
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
4. Current measurement
The universal measuring device PEM735 integrated in the measuring case is set to the
"load meter arrow system".
The measuring case operates with Rogowski coils (on the left side of the image) and
AUX transformers (on the right side of the image).
Fig. 4.1: Measuring current transformer included in the scope of delivery
(left: 4 Rogowski coils, right: 2 current transformer clamps)
When installing the transformers, make sure that the imprinted direction
arrows point at the load. Otherwise you will receive incorrect
measurement values.

Current measurement
12 PEM735-measuring_case_D00240_00_M_XXEN/12.2015
4.1 Application of the Rogowski coils
The 4 provided Rogowski coils are bundled together at one end with a plug that is con-
nected to the socket on the side of the measuring case. For easier assignment of the
measurement values, the Rogowski coils are labelled (5A1…4).
Fig. 4.2: Rogowski coil
Legend Rogowski coil
No. Description
1Plug of the 4 Rogowski coils
2Coil enclosure
3Bayonet connection
4Measuring coil (orange)
5Signal cable (black)
6Mounting aid for busbar measurement
1
2
3
4
6
5

Current measurement
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
4.1.1 Settings on the case
1. Disconnect measuring case.
2. Set the transducers W1…4 for the Rogowski coils to the expected measuring
range using the DIP switches.
DIP switch
Use the DIP switches to set the conversion ratio of the Rogowski coils at the transducers.
Table 4.1: Table DIP switches for transducers
For "Compensation", the length of the used Rogowski coil is indicated in mm. The sup-
plied Rogowski coils must be set to 600.
3. All 8 jumper wires must be inserted in
position "Rogowski".
Changes to the DIP switches can only be carried out when the power
supply is disconnected!
DIP switch for transducers (conversion table for primary currents Rogowski)
1 = 4000 A
In the example, the range "630 A" is set.
2 = 2000 A
3 = 1500 A
4 = 1000 A
5 = 630 A
6 = 400 A
7 = 250 A
8 = 100 A
8
1
W1
W2
W3
W4
11
12
42
41
32
31
22
21
Rogowski

Current measurement
14 PEM735-measuring_case_D00240_00_M_XXEN/12.2015
4.1.2 Mounting Rogowski coils
Power supply line
1. Open the Rogowski coil by turning the orange bayonet connection anti-
clockwise and pulling the measuring coil out of the coil enclosure.
2. Put the measuring coil around the line to be measured.
3. Position the measuring coil in the coil enclosure and close the orange bayo-
net connection with an audible click.
4. Place the coil enclosure on the power supply line with the flange at right
angles.
5. Lead a cable tie around the power supply line and pull it through the gaps of
the flange.
Busbars
For easier measurement of the busbars, 4 busbar mounting supports are included.
1. Open the orange knurled screw of the busbar mounting support anti-clock-
wise so that you can place the busbar mounting support on the top edge of
the busbar.
2. Make sure it is correctly placed.
3. Fix the knurled screw clockwise hand-tight.
4. Open the Rogowski coil and place the measuring coil around the busbar.
5. Push the flange of the coil enclosure as far as possible on the two guide ribs of
the knurled wheel.
6. Insert the measuring coil into the coil enclosure and close the orange bayo-
net connection with an audible click.The ideal position and orientation of the
Rogowski coil is when the current-carrying conductor is placed in the centre
of the coil.
7. Make sure that the measuring coil and the signal cable do not touch any bus-
bar. If necessary, you can adjust the enclosure position clockwise in 15° steps.
Disassemble in reverse order.
4.1.3 Settings on the PEM735
1. Commissioning measuring case with mains plug.
2. Set primary current to measuring range (Settings / Basic / CT Primary)
3. Set secondary current to 1 A (Settings / Basic / CT Secondary)

Current measurement
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
4.2 Application of AUX transformers
Example:
 Application of 3 AUX transformers.
 AUX4 not in use, therefore short-circuited
Up to 4 AUX transformers can be connected
to the measuring case.
Risk of fatal injury from electric shock!
AUX transformers may not be operated as an open circuit on the
secondary side!
Connected AUX transformers must be short-circuited with a jumper wire
when not in use!
When using your own measuring current transformers, be aware that
the secondary current may have a maximum of 5 A!
DANGER
W1
W2
W3
W4
11
12
42
41
32
31
22
21
Rogowski

Current measurement
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4.2.1 Settings on the case
The jumper wires of the transformers in use must
be plugged into position "AUX".
4.2.2 Mounting AUX transformers
Connect the measuring cables to the measuring
current transformer and the case (inputs AUX
W1…4 on the outside).
The measuring case includes 2 current transform-
er clamps.
red measuring cable socket X1
black measuring cable socket X2
4.2.3 Settings PEM735
C112
Primary current 1000 A (Settings / Basic / CT Primary)
Secondary current 1 A (Settings / Basic / CT Secondary)
C148
Primary current as measuring range (Settings / Basic / CT Primary)
Secondary current 5 A (Settings / Basic / CT Secondary)
C112 C148
Measuring range 10 mA…1000 A 250 A; 500 A; 1000 A
Secondary current max. 1 A max. 5 A
Frequency range max. 5 kHz max. 1 kHz
W1
W2
W3
W4
11
12
42
41
32
31
22
21
Rogowski

Current measurement
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
4.3 Use of 3 Rogowski coils and 1 AUX transformer
4.3.1 Settings on the case
1. Deenergise measuring case. Set the DIP
switch of the transducers to the correct
measuring range.
2. The six jumper wires W1…W3 must be
plugged into position "Rogowski".
3. The two jumper wires W4 must be
plugged into position "AUX".
4.3.2 Mounting transformer
W1…3: Intall the three Rogowski coils 5A1…3 (refer to chapter 4.1.2).
W4: Install the AUX transformer (refer to chapter 4.2.2).
4.3.3 Settings PEM735
Primary current W1…3 as measuring range
(Settings / Basic / CT Primary)
Secondary current W1…3 1 A (Settings / Basic / CT Secondary)
Primary current neutral conductor W4 fits AUX transformer
(Settings / Basic / I4 Primary)
Secondary current neutral conductor W4 fits AUX transformer
(Settings / Basic / I4 Secondary)
A mixed operation of
 Rogowski coils for the three phases
 AUX transformers (e.g. current trans-
former clamps) for the neutral con-
ductor
is possible.
W1
W2
W3
W4
11
12
42
41
32
31
22
21
Rogowski

Voltage measurement
18 PEM735-measuring_case_D00240_00_M_XXEN/12.2015
5. Voltage measurement
5.1 Overview material for voltage measurement
Fig. 5.1: Overview material for voltage measurement
From left to right: secured measuring voltage cables, crocodile clips, safety crocodile clips,
magnetic test probes
Connect the measuring voltage cable to the corresponding socket L1…3/N/PE at the
side of the case.
To connect the secured side of the measuring voltage cable you have the following op-
tions:
 Crocodile clips (PE always, for other cables optional)
 Safety crocodile clips for use with push-wire terminals
 Magnetic test probes to enable the screws to make contact with the circuit
breaker
Risk of fatal injury from electric shock!
First connect the laboratory plugs to the case.
Only after this step the measuring voltage cables may be connected to the
system.
Risk of fatal injury from electric shock!
Incorrect wiring of the measuring voltage cables may cause a short-circuit
of the installation, arcs and high short-circuit currents.
Never use measuring cables without integrated fuse for voltage
coupling!
The side of the measuring voltage cable with the fuse (longer plug)
must be connected to the installation.
DANGER
DANGER

Digital inputs and relay outputs
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PEM735-measuring_case_D00240_00_M_XXEN/12.2015
6. Digital inputs and relay outputs
The digital inputs and the relay outputs are located at the outside of the measuring
case.
6.1 Digital inputs DI1, DI2, DIC
The measuring case offers 2 digital inputs. The inputs are supplied by a galvanically iso-
lated DC 24 V voltage. An external circuit providing at least a current of Imin > 2.4 mA is
required for triggering the inputs.
Fig. 6.1: Digital inputs
6.2 Relay outputs RO1…2
The measuring case features two relay outputs. .
Table 6.1: Relay outputs
Rated operational
voltage AC 230 V DC 24 V AC 110 V DC 12 V
Rated operational
current 5A 5A6A5A
DI1 DI2 DIC
RO13 RO14
RO23 RO24

Network
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7. Network
Thanks to the integrated router you can access the measurement results and settings of
the PEM735 via WLAN. Additional notes regarding the use of the PEM735, the Modbus
register overview and the web application can be found in the manual and annexes of
the PEM735.
Ethernet address
PEM735: IP 192.168.0.10
WLAN: IP 192.168.0.254 (admin/admin)
For seamless communication it is important that the PEM735 and the router are in the
same network.
Default setting:
 Access point
 DHCP activated
Connecting a device to the WLAN (SSID=PEM735)
Integrating the WLAN into existing networks: refer to WLAN router documentation.