Bender PEM735 User manual

Manual
EN
PEM735
Universal measuring device
100…690 V, 50 Hz
Software version 2.00.xx
PEM735_D00084_00_M_XXEN/02.2015 B 9310 0735

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

3
Table of Contents
PEM735_D00084_00_M_XXEN/02.2015
1. Making effective use of this document ............................................... 7
1.1 How to use this manual ................................................................................... 7
1.2 Technical support: Service and support .................................................... 8
1.3 Seminars ............................................................................................................... 9
1.4 Delivery conditions, guarantee, warranty and liability ........................ 9
2. Safety ...................................................................................................... 11
2.1 Intended use ..................................................................................................... 11
2.2 Qualified personnel ........................................................................................ 11
2.3 General safety instructions .......................................................................... 11
3. Device description ............................................................................... 13
3.1 Area of application .......................................................................................... 13
3.2 Device features ................................................................................................. 13
3.3 Versions ............................................................................................................... 15
3.4 Application example ..................................................................................... 16
3.5 Description of function ................................................................................. 17
4. Installation and connection ............................................................... 19
4.1 Project planning .............................................................................................. 19
4.2 Safety instructions ........................................................................................... 19
4.3 Installing the device ....................................................................................... 19
4.3.1 Dimension diagrams ...................................................................................... 19
4.3.2 Front panel mounting ................................................................................... 20
4.4 Connection of the device ............................................................................. 21
4.4.1 Safety instructions........................................................................................... 21
4.4.2 Back-up fuses .................................................................................................... 21
4.4.3 Measuring current transformer connection .......................................... 21
4.5 Connection details .......................................................................................... 22

Table of Contents
4PEM735_D00084_00_M_XXEN/02.2015
4.6 Wiring diagram ................................................................................................. 22
4.7 Connection diagram voltage inputs ......................................................... 23
4.7.1 Three-phase 4-wire system (TN, TT, IT system) ..................................... 23
4.7.2 Three-phase 3-wire system .......................................................................... 23
4.7.3 Connection via voltage transformers ....................................................... 24
4.8 Digital inputs ..................................................................................................... 25
4.9 Digital outputs DO1…2 ................................................................................ 26
4.10 Relay outputs RO1…4 ................................................................................... 27
4.11 Modbus TCP (connector pin assignment) .............................................. 27
5. Commissioning ...................................................................................... 29
5.1 Check proper connection ............................................................................. 29
5.2 Before switching on ........................................................................................ 29
5.3 Switching on ..................................................................................................... 29
5.4 System ................................................................................................................. 29
6. Operation ............................................................................................... 31
6.1 Getting to know the operating elements .............................................. 31
6.2 LED indication (Energy pulsing) ................................................................. 32
6.3 Overview diagram ........................................................................................... 33
7. Power Quality ........................................................................................ 35
7.1 Phasor diagram ................................................................................................ 36
7.2 Flicker ................................................................................................................... 37
7.3 DIN EN 50160 report ....................................................................................... 38
7.3.1 Power Frequency ............................................................................................. 40
7.3.2 Supply Voltage Variations ............................................................................ 43
7.3.3 Rapid Voltage Changes ................................................................................ 45
7.3.4 Flicker Severity .................................................................................................. 47
7.3.5 Voltage Unbalance .......................................................................................... 50
7.3.6 Harmonic Voltage ............................................................................................ 52
7.3.7 Interharmonic Voltage ................................................................................... 56
7.3.8 Mains Signaling (ripple control signals) .................................................. 57
7.3.9 Swell Overvoltages ......................................................................................... 61

Table of Contents
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PEM735_D00084_00_M_XXEN/02.2015
7.3.10 Dips ....................................................................................................................... 62
7.3.11 Interruptions ..................................................................................................... 64
7.3.12 Transient Overvoltages ................................................................................. 66
8. Voltage ................................................................................................... 69
9. Current ................................................................................................... 71
10. Waveform ............................................................................................ 73
11. Harmonics ........................................................................................... 77
12. Metering .............................................................................................. 81
13. Power & Energy .................................................................................. 85
14. System .................................................................................................. 87
15. Events ................................................................................................... 89
16. Settings ............................................................................................... 91
16.1 Info ........................................................................................................................92
16.2 Basic ..................................................................................................................... 92
16.2.1 Ethernet .............................................................................................................. 94
16.2.2 COM (communication interface) ............................................................... 96
16.2.3 Advanced (advanced settings) ................................................................... 97
16.2.4 Time (setting time and date) .................................................................... 100
16.2.5 Others ............................................................................................................... 101
17. Technical data ................................................................................... 103
17.1 Standards and certifications ..................................................................... 105
17.2 Ordering information .................................................................................. 105
18. Glossary and terms .......................................................................... 107
INDEX ......................................................................................................... 113

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PEM735_D00084_00_M_XXEN/02.2015
1. Making effective use of this document
1.1 How to use this manual
This operating manual is aimed at qualified personnel in electrical engineering and
communications technology, installers and users of the product and must be kept
ready for referencing in the immediate vicinity of the device.
To make it easier for you to understand and revisit certain sections of text and instruc-
tions in the manual, we have used symbols to identify important instructions and infor-
mation. The meaning of these symbols is explained below:
Although great care has been taken in the drafting of this operating manual, it may nev-
ertheless contain errors and mistakes. Bender cannot accept any liability for injury to
persons or damage to property resulting from errors or mistakes in this manual.
Each of the registered trademarks which appears in this document remains the proper-
ty of its owner.
The 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

Making effective use of this document
8PEM735_D00084_00_M_XXEN/02.2015
1.2 Technical support: Service and support
For commissioning and troubleshooting Bender offers you:
First Level Support
Technical support by phone or e-mail for all Bender products:
 Question about specific customer applications
 Commissioning
 Troubleshooting
Telephone[phone]*
Fax: [phone]
In Germany only: 0700BenderHelp (Tel. and Fax)
E-m[email protected]
Repair Service
Repair, calibration, update and replacement service for all Bender products
 Repair, calibration, testing and analysing Bender products
 Hardware and software update for Bender devices.
 Delivery of replacement devices for faulty or incorrectly delivered Bender devices.
 Extended warranty for Bender devices with in-house repair service resp. replace-
ment devices at no extra cost.
Telephone[phone]** (technical issues)
[phone]**, -785** (commercial matters)
Fax: [phone]
E-m[email protected]
Please send the devices for repair to the following address:
Bender GmbH, Repair-Service,
Londorfer Strasse 65,
35305 Gruenberg
Field Service
On-site service for all Bender products:
 Commissioning, parameter setting, maintenance, trouble shooting for Bender
products.
 Analysis of the electrical installation in the building (power quality test, EMC test,
thermography).
 Practical training courses for customers.

Making effective use of this document
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PEM735_D00084_00_M_XXEN/02.2015
Telephone[phone]**, -762 **(technical issues)
[phone]** (commercial issues)
Fax: [phone]
E-mail [email protected]
Internet: www.bender-de.com
*Available from 7.00 a.m. to 8.00 p.m. on 365 days of the year (CET/UTC+1)
**Mo-Thu 7.00 a.m. - 8.00 p.m., Fr 7.00 a.m. - 13.00 p.m
1.3 Seminars
Bender would be happy to provide training in respect of the use of the universal meas-
uring device.
Current dates of training courses and workshops can be found on the Internet at http:/
/www.bender-de.com -> Know-how -> Seminars.
1.4 Delivery conditions, guarantee, warranty and liability
The conditions of sale and delivery set out by Bender 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 gen-
eral delivery conditions for products and services in the electrical industry) set out by
the ZVEI (Zentralverband Elektrotechnik- und Elektronikindustrie e. V.) (German Electri-
cal and Electronic Manufacturer's Association) also applies.
Conditions of sale and delivery can be obtained from Bender in printed or electronic for-
mat.

Making effective use of this document
10 PEM735_D00084_00_M_XXEN/02.2015

11
PEM735_D00084_00_M_XXEN/02.2015
2. Safety
2.1 Intended use
The universal measuring device PEM735 is suitable for
 the analysis of energy and power (Power Analyser)
 monitoring of the power supply quality (Power Quality)
 data recording for energy management (Energy Management).
As a compact device for front panel mounting, it is suitable to replace analogue indicat-
ing instruments. PEM735 is suitable for 2, 3 and 4-wire systems and can be used in TN,
TT and IT systems. The current measurement inputs of the PEM are connected via exter-
nal …/1 A or …/5 A measuring current transformers. In principle, measurements in me-
dium- and high-voltage systems are carried out via measuring current and voltage
transformers.
Use for the intended purpose includes:
 Device-specific settings according to local equipment and operating conditions.
 The observation of all information in the operating manual.
2.2 Qualified personnel
Only electrically skilled persons are authorised to install and commission this device.
Electrically skilled persons are those who have the relevant education, knowledge and
experience, as well as knowledge of the relevant safety standards and who are able to
perceive risks and to avoid hazards which electricity can create when work activities are
carried out on electrical installations. The electrically skilled person is specially trained
for carrying out work activities in his specific working environment and has a thorough
knowledge of the relevant standards and regulations. In Germany, an electrically skilled
person must meet the requirements of the accident prevention regulation BGV A3. In
other countries the applicable regulations have to be observed and followed.
2.3 General safety instructions
Bender devices are designed and built in accordance with the state of the art and ac-
cepted rules in respect of technical safety. However, the use of such devices may intro-
duce risks to the life and limb of the user or third parties and/or result in damage to
Bender devices or other property.

Safety
12 PEM735_D00084_00_M_XXEN/02.2015
 Only use Bender devices:
– As intended
– In perfect working order
– In compliance with the accident prevention regulations and guidelines appli-
cable at the location of use
 Eliminate all faults immediately which may endanger safety.
 Do not make any unauthorised changes and only use replacement parts and
optional accessories purchased from or recommended by the manufacturer of
the equipment. Failure to observe this requirement can result in fire, electric
shock and injury.
 Reference signs must always be clearly legible. Replace damaged or illegible signs
immediately.
 If the device is overloaded by overvoltage or a short-circuit current load, it must
be checked and replaced if necessary.
 If the device is being used in a location outside the Federal Republic of Germany,
the applicable local standards and regulations must be complied with.
European standard EN 50110 can be used as a guide.
Danger of electric shock!
Touching live parts will result in electric shock which can be fatal.
All work activities on electrical installations as well as installation
activities, commissioning activities and work activities with the device in
operation may only be carried out by electrically skilled persons!
DANGER

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PEM735_D00084_00_M_XXEN/02.2015
3. Device description
3.1 Area of application
For humans, electric current is not immediately visible. Universal measuring devices for
monitoring electrical parameters are used wherever energy consumption, power de-
mand measurements or the quality of the supply voltage are to be made visible.
The PEM735 is suitable for monitoring
 Power generation systems (PV systems, CHPs, hydro power and wind power
plants)
 Energy-intensive equipment and parts of installation
 Sensitive equipment
3.2 Device features
The universal measuring device PEM735 for power quality and energy management is
characterised by the following features:
 Class A power analyser, certified according to DIN EN 61000-4-30
 Monitoring the power quality in accordance with DIN EN 50160
 Accuracy class according to IEC 62053-22: 0.2 S
 TFT colour display (640 x 480) 5,7“
 Modbus/RTU and Modbus/TCP
 Memory: 2 GB (1 GB for data recording)
 Panel mounting 138x138
 Integrated web server
 Data export via FTP: comtrade, PQDIF
 Flicker measurement
 Detection and recording of transient events (40 μs)
 Sampling rate: 512 samples/cycle
 Freely configurable recorders for waveform, consumption and long-term
recording
 IEC 61850
 Sampling rate of the measuring channels: 25.6 kHz
 Calculation of the total harmonic distortion THDU/THDI:
harmonics up to the order 63
 Individual current/voltage harmonics

Device description
14 PEM735_D00084_00_M_XXEN/02.2015
 Password protection
 History memory for minimum and maximum values of current, voltage, energy,
power etc. for each month.
 Inputs and outputs:
– 2 digital outputs,
– 4 relay outputs,
– 8 digital inputs (sampling: 1 kHz)
– 2 LED pulse outputs for active and reactive energy:
 Setpoints: 32 configurable setpoints (24 Standard, 8 Highspeed)
 System protocol:
– 1024 entries
– Setup changes
– Setpoints
– DI status changes
– DO switching operations
 Communication:
– Galvanically isolated RS-485 interface (1,200 to 19,200 bit/s)
– Modbus/RTU protocol
– Modbus/TCP (10/100 Mbit/s)
Measurements at a glance
 Measuring quantities
– Phase voltages UL1, UL2, UL3 in V
– Line-to-line voltage UL1L2, UL2L3, UL3L1 in V
– U4 in V
– Phase currents I1, I2, I3in A
– Neutral current (calculated) I0in A
– Neutral current (measured) I4in A
– Frequency fin Hz
– Phase angle for Uand I in °
– Power per phase conductor Pin kW, Qin kvar, S in kVA
– Total power Pin kW, Qin kvar, S in kVA
– Displacement factor cos (φ)
– Power factor λ
– Active and reactive energy import in kWh, kvarh
– Active and reactive energy export in kWh, kvarh
– Voltage unbalance in %

Device description
15
PEM735_D00084_00_M_XXEN/02.2015
– Current unbalance in %
– Harmonic distortion
(THD, TOHD, TEHD) for Uand I
– k-factor for I
– Minimum and maximum values for U, I, r.m.s., fundamental component
 Measuring quantities PQ
– k-factor for I
– THD, TOHD and TEHD for Uand I
– Harmonic analysis for P, Q and S for harmonics of the order 2…63.
– Fundamental component for U, I, P, Q, S and λ
– Fundamental component for active and reactive energy (import and export)
– Total harmonics for active energy.
– Individual harmonics 2…31 for active energy import
 Report in accordance with EN 50160
– Power Frequency
– Supply voltage variations
– Rapid voltage changes
– Flicker severity
– Voltage Unbalance
– Harmonic voltage for harmonics up the order 63 in % or r.m.s. value
– Interharmonic voltage for harmonics up to the order 63 in % or r.m.s. value
– Mains signaling
– Swell overvoltages
– Dips
– Interruptions
– Transient overvoltages
3.3 Versions
PEM735 100/690 V;
Current input 5 A

Device description
16 PEM735_D00084_00_M_XXEN/02.2015
3.4 Application example
Fig. 3.1: Application example
Modbus TCP
Ethernet
BMS 1…12
Modbus
RTU
Fileserver
L
PEN
PE
L
N
PE
U
I
Modbus TCP
Modbus RTU
PAS
PEM7xx
U
I
NSHV
UV1
1…12
RCMS
UV2
U
I
U
I
U
I
RCMS
Modbus TCP
Modbus RTU
Modbus TCP
PEM5xx PEM5xx
Modbus RTU
PEM3xx
PEM7xx
CP700
3
U
I
Modbus RTU
PEM3xx
3

Device description
17
PEM735_D00084_00_M_XXEN/02.2015
3.5 Description of function
The digital universal measuring device PEM735 is suited for measuring and displaying
electrical quantities of electricity networks. The PEM735 can measure currents, voltag-
es, energy consumption and power as well as representing individual harmonic com-
ponents of current voltage for the voltage and current quality assessment in
accordance with DIN EN 50160.
The accuracy of the active energy metering corresponds to class 0.2 S, which is in com-
pliance with the DIN EN 62053-22 (VDE 0418 Part 3-22):2003-11.
The current inputs are connected via external …/1 A or …/5 A measuring current trans-
formers.
The large display of the panel mounting device makes the relevant measured quantities
easily legible and enables fast configuration. In addition, the RS-485 interface allows a
central evaluation and processing of data. Switching operations can be monitored or
initiated via the digital inputs and outputs (Example: Switching off uncritical loads if the
peak load threshold value is exceeded).
The universal measuring device PEM735 provides the following functions:
 Provision of energy consumption data for a well-thought-out energy
management
 Power quality monitoring for cost reduction and increased plant availability
 High resolution waveform recording allows analysis of power quality phenomena

Device description
18 PEM735_D00084_00_M_XXEN/02.2015

Installation and connection
19
PEM735_D00084_00_M_XXEN/02.2015
4. Installation and connection
4.1 Project planning
For any questions associated with project planning, please contact Bender:
Internet: www.bender-de.com
Telephone[phone]
4.2 Safety instructions
Only electrically skilled persons are allowed to connect and commission the device.
Such persons must have read this manual and understood all instructions relating to
safety.
4.3 Installing the device
4.3.1 Dimension diagrams
Fig. 4.1: Dimension diagram PEM735 (front view)
Danger of electric shock!
Follow the basic safety rules when working with electricity.
Refer to the rated and supply voltage values as specified in the
technical data!
DANGER
144
145
125
144
136
136

Installation and connection
20 PEM735_D00084_00_M_XXEN/02.2015
Fig. 4.2: Dimension diagram PEM735 (side view)
Fig. 4.3: Dimension diagram PEM735 (panel cutout)
4.3.2 Front panel mounting
A front-panel cutout of 138 mm x 138 mm is required for the device.
1. Loosen the screws of the fixing brackets.
2. Slide the fixing brackets along the grooves provided in the enclosure and
remove them.
3. Insert the device into the installation opening of the front panel.
4. Refit the brackets in the reverse order.
16 109
136
20
144
164
138
138