Omicron MPD 800 User manual

MPD 800
User Manual

MPD 800 User Manual
2OMICRON
Manual Version: ENU 1223 05 02
© OMICRON electronics GmbH 2021. All rights reserved.
This manual is a publication of OMICRON electronics GmbH.
All rights including translation reserved. Reproduction of any kind, for example, photocopying,
microfilming, optical character recognition and/or storage in electronic data processing systems,
requires the explicit consent of OMICRON. Reprinting, wholly or in part, is not permitted.
The product information, specifications, and technical data embodied in this manual represent the
technical status at the time of writing and are subject to change without prior notice.
We have done our best to ensure that the information given in this manual is useful, accurate and entirely
reliable. However, OMICRON does not assume responsibility for any inaccuracies which may be
present.
The user is responsible for every application that makes use of an OMICRON product.
OMICRON translates this manual from the source language English into a number of other languages.
Any translation of this manual is done for local requirements, and in the event of a dispute between the
English and a non-English version, the English version of this manual shall govern.

OMICRON 3
Contents
Contents
About this manual 5
Safety symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1 Safety instructions 6
1.1 Operator qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Safety standards and rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2.1 Safety standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2.2 Safety rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Operating the measurement setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Orderly measures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.5 Disclaimer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 Compliance statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7 Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2MPD 800 measurement system 11
2.1 Partial discharge measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.1 MPD 800 acquisition unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.2 CPL1 and CPL2 external quadripole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.3 MCU2 multi-device control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.2.4 RBP1 rechargeable battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.2.5 V-to-AC-adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.3 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.3.1 Specific safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.3.2 Connection to the device under test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
2.3.3 PD measurement preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2.3.4 Disconnection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
2.4 Package Contents and Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
2.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
3 Technical specifications 52
3.1 Care and cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.2 MPD 800 factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
3.3 MPD 800 acquisition unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.3.1 Accuracy, resolution, display and measuring range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.3.2 Device data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3.3.3 Power data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
3.3.4 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.3.5 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.3.6 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.4 CPL1 and CPL2 external quadripole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.4.1 Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.4.2 Device data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.4.3 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3.4.4 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3.4.5 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
3.5 MCU2 multi-device control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
3.5.1 Device data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
3.5.2 Power data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
3.5.3 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
3.5.4 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
3.5.5 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
3.6 RBP1 rechargeable battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

MPD 800 User Manual
4OMICRON
3.6.1 Device data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
3.6.2 Power data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
3.6.3 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3.6.4 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3.6.5 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3.7 V-to-AC-adapter 100kOhm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.7.1 Device data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.7.2 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.7.3 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.8 MPC1 measurement protection case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.8.1 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.8.2 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.8.3 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Support 66

OMICRON 5
About this manual
About this manual
This User Manual provides information on how to use the MPD 800 test system safely, properly and
efficiently. The MPD 800 User Manual contains important safety rules for working with the MPD 800
acquisition unit and gets you familiar with operating the MPD 800 acquisition unit. Following the
instructions in this User Manual will help you to prevent danger, repair costs, and avoid possible down
time due to incorrect operation.
The MPD 800 User Manual always has to be available on the site where the MPD 800 acquisition unit
is used. The users of the MPD 800 acquisition unit must read this manual before operating the MPD 800
acquisition unit and observe the safety, installation, and operation instructions therein.
Reading the MPD 800 User Manual alone does not release you from the duty to comply with all national
and international safety regulations relevant to working on high-voltage equipment.
Safety symbols used
In this manual, the following symbols indicate safety instructions for avoiding hazards.
DANGER
Death or severe injury will occur if the appropriate safety instructions are not observed.
WARNING
Death or severe injury can occur if the appropriate safety instructions are not observed.
CAUTION
Minor or moderate injury may occur if the appropriate safety instructions are not
observed.
NOTICE
Equipment damage or loss of data possible

MPD 800 User Manual
6OMICRON
1 Safety instructions
1.1 Operator qualifications
Working on high-voltage assets can be extremely dangerous. Only authorized personnel who are
qualified, skilled and regularly trained in electrical engineering are allowed to operate the MPD 800
acquisition unit and its accessories. Before starting to work, clearly establish the responsibilities.
Personnel receiving training, instructions, directions, or education on the MPD 800 acquisition unit must
be under constant supervision of an experienced operator while working with the equipment. The
supervising operator must be familiar with the equipment and the regulations on site. The operator is
responsible for the safety requirements during the whole test.
1.2 Safety standards and rules
1.2.1 Safety standards
Testing with the MPD 800 acquisition unit must comply with the internal safety instructions and additional
safety-relevant documents.
In addition, observe the following safety standards, if applicable:
• EN 50191 (VDE 0104) "Erection and Operation of Electrical Test Equipment"
• EN 50110-1 (VDE 0105 Part 100) "Operation of Electrical Installations"
• IEEE 510 "IEEE Recommended Practices for Safety in High-Voltage and High-Power Testing"
Moreover, observe all applicable regulations for accident prevention in the country and at the site of
operation.
Before operating the MPD 800 acquisition unit and its accessories, read the safety instructions in this
User Manual and the appropriate accessory User Manual carefully.
Do not turn on the MPD 800 acquisition unit and do not operate the MPD 800 acquisition unit without
understanding the safety information in this manual. If you do not understand some safety instructions,
contact OMICRON before proceeding (see "Support" on page 66).
Maintenance and repair of the MPD 800 acquisition unit and its accessories is only permitted by qualified
experts at OMICRON Service Centers (see "Support" on page 66).
1.2.2 Safety rules
Always observe the five safety rules:
► Disconnect completely.
► Secure against re-connection.
► Verify that the installation is dead.
► Carry out grounding and short-circuiting.
► Provide protection against adjacent live parts.

OMICRON 7
Safety instructions
1.3 Operating the measurement setup
► Switch off the high voltage.
► Always obey the five safety rules and obey the following safety instructions.
► Always obey the internal safety instructions for working in areas with high voltage to avoid injury.
► Before operating the MPD 800 acquisition unit and its accessories, ground the setup as described in
1.2.2 "Safety rules" on page 6.
► Make sure to clear the high-voltage area.
► Observe the dangerous areas.
► Before switching on the high voltage, leave the high-voltage area.
► Make sure that the ground terminal of the test object is in good condition, clean, and free of oxidation.
► Do not connect any cable to the test object without a visible grounding of the test object.
► Always position the MPD 800 acquisition unit, the external quadripole (CPL1/CPL2) and the
rechargeable battery pack (RBP1) inside of the high-voltage area.
► Always operate and place the Multi-device Control Unit (MCU2) and the PC in the work area.
► Install the GPS antenna and its cabling in accordance with all national and local electrical codes,
regulations, and practices.
► Install the antenna and cabling where they will not be energized by falling high-voltage power lines
and cannot be damaged by over-voltage transients, particularly lightning. Additional protective
measures are required for such installations, as specified in national and local electrical codes.
► Never use the external power supply when the MPD 800 acquisition unit is operated at high-voltage
potential.
► Never remove or attach any cables from the MPD 800 acquisition unit and its accessories or the test
object during a test.
► Before operating the MPD 800 system in permanent installations with the OMICRON standard power
supply, be aware that a flashover or breakdown might invisibly damage the OMICRON 24 W DC
supply. Read the corresponding "Application Note" which can be found in the knowledge library within
OMICRON Customer Portal.
► Do not use inadequately rated supply cords.
► Do not insert objects (for example, screwdrivers) into any input/output socket.
► Do not operate the MPD 800 acquisition unit or its accessories under ambient conditions that exceed
the temperature and humidity limits listed in 3 "Technical specifications" on page 52.
► Check your additional equipment (for example, PC) for environmental conditions before use.
► Always use dry and clean fiber-optic cables which are provided by OMICRON electronics. In dusty
regions, use protective caps. Make sure that the cables have ground contact to avoid leakage
current.
► Do not use metal coated/jacketed conductive fiber-optic cables. Store the fiber-optic cables in a dry
area.
► Do not operate the MPD 800 acquisition unit and its accessories in the presence of explosives, gas
or vapors.
► Do not open the MPD 800 acquisition unit or its accessories housing.
► Do not repair, modify, extend, or adapt the MPD 800 acquisition unit or its accessories.
► Use only the MPD 800 acquisition unit original accessories available from OMICRON.

MPD 800 User Manual
8OMICRON
► Keep the MPD 800 acquisition unit and its accessories in a dry and clean condition.
► Do not expose the MPD 800 acquisition unit or its accessories to direct sunlight or heating sources.
►Use MPD 800 acquisition unit and its accessories only in a technically sound condition and when its
use is in accordance with the regulations.
► If the MPD 800 acquisition unit or its accessories do not seem to function properly (for example, in
case of cable damages, abnormal warming of the batteries during charging, or overheating of
components), stop using them and contact your regional OMICRON service center (see "Support" on
page 66).
► Do not use CPL and the MPD 800 acquisition unit outside of an EN50191 compliant environment.
► Always short circuit the CPL2 RTN/OUT output to the GND if RTN/OUT is not used.
► The AC output of CPL1 or CPL2 has to be short circuited if not connected to the MPD 800 acquisition
unit.
► Do not place the MPD 800 acquisition unit, CPL1/CPL2 and accessories outside of high-voltage area.
► Do not use the voltage display in the MPD software to determine the absence of voltage.
► Keep the appropriate distance to the test object in the high-voltage area.
► Do not use defective equipment.
Figure 1-1: Illustration example of the work and high-voltage area established for working with MPD 800
system
Work area High-voltage area
Dry and clean
OMICRON fiber-optic
cable

OMICRON 9
Safety instructions
1.4 Orderly measures
The MPD 800 User Manual or alternatively the e-book has always to be available on the site where the
MPD 800 acquisition unit is operated.
The users of the MPD 800 acquisition unit and its accessories must read this manual before operating
the MPD 800 acquisition unit and its accessories and observe the safety, installation, and operation
instructions therein.
The MPD 800 acquisition unit and its accessories may only be used in accordance with the user
documentation (including but not limited to User Manuals, Reference Manuals, Getting Started manuals
and manufacturer manuals). The manufacturer and the distributor are not liable for damage resulting
from improper usage.
Opening the MPD 800 acquisition unit or its accessories without authorization invalidates all warranty
claims. Any kind of maintenance, calibration or repair on the device itself may only be carried out by
persons authorized by OMICRON.
1.5 Disclaimer
If the equipment is used in a manner not described in the user documentation, the protection provided
by the equipment may be impaired.
1.6 Compliance statement
Declaration of conformity (EU)
The equipment adheres to the guidelines of the council of the European Community for meeting the
requirements of the member states regarding the electromagnetic compatibility (EMC) directive, the low
voltage directive (LVD) and the RoHS directive.
FCC compliance (USA)
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
Declaration of compliance (Canada)
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

MPD 800 User Manual
10 OMICRON
1.7 Recycling
This test set (including all accessories) is not intended for household use. At
the end of its service life, do not dispose of the test set with household waste!
For customers in EU countries (incl. European Economic Area)
OMICRON test sets are subject to the EU Waste Electrical and Electronic
Equipment Directive 2012/19/EU (WEEE directive). As part of our legal obligations
under this legislation, OMICRON offers to take back the test set and ensure that it is
disposed of by authorized recycling agents.
For customers outside the European Economic Area
Please contact the authorities in charge for the relevant environmental regulations in
your country and dispose the OMICRON test set only in accordance with your local
legal requirements.

OMICRON 11
MPD 800 measurement system
2MPD 800 measurement system
2.1 Partial discharge measurement
Partial discharge phenomena, as defined by IEC60270, are localized dielectric breakdowns of a small
portion of a solid or liquid electrical insulation system under high-voltage stress.
The detection of partial discharge is of vital importance because partial discharge phenomena often
precede an insulation breakdown of high-voltage equipment leading to cost-intensive outages and
repairs.
2.2 System overview
Designated use
The MPD 800 system is an acquisition and analysis system for detecting, recording, and analyzing
partial discharge events in many applications. It is suited for type and routine testing in high-voltage
laboratory or test bays and especially for on-site high-voltage commissioning and acceptance testing on
various high- and medium-voltage assets in various areas of primary applications.
The general use of the MPD 800 system is described by referring to the general partial discharge
measurement setup (see 2.3 "Application" on page 34).
2.2.1 MPD 800 acquisition unit
Designated use
Figure 2-1: MPD 800 acquisition unit

MPD 800 User Manual
12 OMICRON
Being the core component of the MPD 800 system, the MPD 800 acquisition unit is designed to perform
partial discharge measurement typically on power transformers, rotating machines or high-voltage
cables. The MPD 800 acquisition unit can be daisy chained by using a fiber-optic cable provided by
OMICRON to perform multi-unit measurements.The MPD 800 acquisition unit is designated to be
connected to a number of accessories enabling partial discharge measurement on various high- and
medium-voltage assets in high-voltage laboratories and on-site (see also 2.5 "Accessories" on page 49).
The MPD 800 acquisition unit can be connected to the following accessories to achieve the desired
measurement options or targets:
•The MPD 800 acquisition unit can be connected to the test object or to a coupling capacitor using
coupling units such as CPL1 or CPL2 external quadripole.
•The MPD 800 acquisition unit can be connected directly to coupling capacitors.
•The MPD 800 acquisition unit can be connected to high-frequency current transformers (HFCTs)
(for example, MCT 120) for measurements on ground connections of various high-voltage assets.
•The MPD 800 acquisition unit can be connected to voltage outputs or existing CPL 542s through
an intermediate connection to a V-to-AC-adapter.
•The MPD 800 acquisition unit can be connected to the existing terminal box (for example, the
terminal box connected to rotating machine).
•The MPD 800 acquisition unit can be connected to a partial discharge measuring bridge for
balanced measurements.
•The MPD 800 acquisition unit can be used to trigger external devices such as acoustic partial
discharge localization systems (for example, PDL 650) by its optical or electrical trigger output.
DANGER
Death or severe injury caused by high voltage or current
► Always observe the five safety rules (see 1.2.2 "Safety rules" on page 6) before
connecting or integrating the MPD 800 acquisition unit into a system.
DANGER
Death or severe injury caused by high voltage or current
The MPD 800 acquisition unit and its accessories are not suitable for reliably checking if
a system is electrically live or energized.
► If readings from the MPD 800 acquisition unit are used for safety relevant procedures,
perform a double check by an independent measurement device.
WARNING
Death or severe injury caused by high voltage or current possible
When the test object is energized, flashovers or electrical breakthroughs may occur due
to failure of test object. The MPD 800 acquisition unit and CPL1 or CPL2 are not
designed to withstand power frequency fault currents.
► Always observe the minimum safety distance and use personal safety equipment.

OMICRON 13
MPD 800 measurement system
Front panel connections
Figure 2-2: MPD 800 acquisition unit front panel
Two fiber-optic duplex LC-connectors FO 1 and FO 2 are located on the front panel. The connectors
FO 1 and FO 2 are used to connect the MPD 800 acquisition unit to MCU2 or to connect an additional
MPD 800 acquisition unit in a daisy chain via fiber-optic cables provided by OMICRON. The protocol
used for these fiber connections is proprietary and might therefore not be routed through existing fiber
networks. Both fiber-optic connectors are equivalent in function. Therefore it doesn’t matter which port
is used for connecting MCU2 or the subsequent MPD 800 acquisition unit respectively.
Also an additional fiber-optic connector TRIGGER is located on the front panel. The TRIGGER output is
used to connect the OMICRON PDL 650 or other equipment which can be triggered by optical pulses.
Consult the corresponding manuals for further information.
The POWER connection socket is used for the power supply which is connected to RBP1.
For description of the indicators (named STATUS on the front panel) see section "Indicators" on
page 16.
This product contains one or more eye-safe lasers of class 1.
DANGER
Death or severe injury caused by high voltage or current
► Do not under any circumstances use metallic re-enforced conductive fiber-optic
cables.
► Always use only fiber-optic cables supplied by OMICRON.
► Always use dry and clean fiber-optic cables to avoid or minimize leakage currents.
► Make sure that the cables have ground contact to avoid leakage current to MCU2.
► Eliminate the risk of leakage currents.
► Observe the appropriate distance to high-voltage area (see 1.2.1 "Safety standards"
on page 6).
► Observe the minimum creeping distance on the fiber-optic cable (IEC 61010-1).

MPD 800 User Manual
14 OMICRON
Rear panel connections
Figure 2-3: MPD 800 acquisition unit rear panel
The rear panel of the MPD 800 acquisition unit consists of two input channels, CHANNEL 1 and
CHANNEL 2. Each of the channels consists of two BNC connectors (PD and AC). The PD and AC
connectors correspond to the BNC outputs which can be found on the CPL1 and CPL2 external
quadripoles. The AC output on the external quadripole must be connected to the AC input on the
MPD 800 acquisition unit. Likewise, the PD output on the external quadripole must be connected to the
PD input on the MPD 800 acquisition unit. If no external quadripole is used, the coupling capacitor must
be directly connected to the PD input and the AC input must be left open and the internal quadripole of
the MPD 800 acquisition unit must be activated.
The input impedance of both measurement input types (PD and AC) are complex and therefore
frequency dependent. It is important to note that the AC input is a current measurement input with low
impedance of 4.5 Ω. You must transform a voltage to a current by using the V-to-AC-adapter 100 kΩ,
see 2.2.5 "V-to-AC-adapter" on page 32. The input impedance of the PD input at low frequencies
strongly depends on whether the internal quadripole is activated or not. If the internal quadripole is not
activated, the input impedance is 50 Ω over the rated frequency range. If the internal quadripole is
activated, the input impedance is as low as < 10 Ω at frequencies below 1 kHz, in order to be able to
measure the reactive current of coupling capacitors directly.
An additional BNC connector (OUT) is located on the rear panel. This output carries pulses that is tied
to the unit's test generator or a trigger pulse that is tied to the trigger unit.
Also located on the rear panel of the MPD 800 acquisition unit is the auxiliary control connector (AUX).
This connector is used to connect auxiliary devices (for example, MBB1).

OMICRON 15
MPD 800 measurement system
CAUTION
Minor or moderate injury caused by voltage or current possible
If the ratings are violated, damage or loss of precision of the equipment might be the
consequence.
► Observe the maximum current and power ratings of the measurement inputs.
► Never connect a voltage source directly to the AC inputs.
► Never connect a current source directly to the PD inputs having the internal quadripole
deactivated.
► If the internal quadripole is activated, make sure to observe the current rating of the PD
input.
WARNING
Death or severe injury caused by high voltage or current possible
The MPD 800 acquisition unit is not intended to be used for measurements which are
connected directly to mains circuits (IEC61010-2-030). Measurements of mains voltages
require accessories with proper CAT rating (< 1000 VAC) or proper lightning/switching
impulse over-voltage rating (>1000 VAC). Insulation transformer are not recommended.
► Make sure to connect the MPD 800 acquisition unit to the test setup using appropriate
rated accessories because the MPD 800 acquisition unit is not able to handle power
frequency fault currents.

MPD 800 User Manual
16 OMICRON
Indicators
Figure 2-4: MPD 800 acquisition unit indicators (LEDs)
Each MPD 800 acquisition unit is equipped with 2 LEDs (blue and red) for displaying the unit’s status or
malfunctions. The following tables depict the condition and description of the two LEDs.
Integration into systems
The MPD 800 acquisition unit, CPL1, CPL2 and the V-to-AC-adapter are designed as a system. It is
recommended to use them as described in the respective “Designated use” (see 2.2) and “Application”
(see 2.3) chapters. If one or more of the MPD 800 system components need to be integrated into a
existing system, the following additional precautions must be fulfilled:
► If connected to an existing coupling capacitor, locate the MPD 800 acquisition unit in close proximity
of the bottom end connection of the coupling capacitor with a distance of less than one meter.
► If a ground-referenced measurement device which is not part of the MPD 800 system is used
together with the MPD 800 system, use CPL2 due to special grounding restrictions. The maximum
ground-referenced voltage at the input of the low arm capacitor must not exceed 140 VRMS under any
measurement condition. Therefore, perform additional precautions to achieve the desired safety
requirements.
Note: If the MPD 800 acquisition unit, CPL1 or CPL2 is accessible during measurement, additional
touch protection is required.
► Do not use the MPD 800 acquisition unit in an electrical path where a failure of the MPD 800
acquisition unit (for example, short or open circuits of measurement inputs) causes:
• a voltage regulation feedback loop to become dysfunctional.
• an over-current protection to become dysfunctional.
• an indicator for hazardous live electrical quantities (IEC 61010-1, VDE 0105-100) to become
dysfunctional.
Table 2-1: Blue and red LED inidications
Condition Description
Blue LED Red LED
Blinking Off Device is powered and in standby mode.
Off Blinking Error
Device is not working properly.
Check the RBP1 connection or replace the RBP1 connection cable. If the
red LED is still blinking, contact the OMICRON technical support
(see "Support" on page 66).
Off On Device is okay.
Computer does not recognize the device.
Check the fiber-optic connection or replace the fiber-optic cable.
On Off Device is in operation mode (powered and the software is running).
Blue LED Red LED

OMICRON 17
MPD 800 measurement system
► If the MPD 800 acquisition unit needs to be grounded, use the shortest path with the lowest
achievable inductance. For this purpose, use the common grounding circuit of the test voltage
source, test object and coupling capacitor.
►RBP1 is grounded through the MPD 800 acquisition unit. Therefore, make sure that the RBP1
housing is electrically insulated from ground potential.
► Place MCU2 in close proximity to the PC and outside of the high-voltage or test area (EN 50191). If
leakage current to MCU2 can not be prevented completely, provide additional safety measures, for
example, grounded USB hub. Observe the safety advises from "Front panel connections" on
page 13, regarding fiber-optic connections.
► It is not recommended to place the MPD 800 acquisition unit outside of the high-voltage or test area
(EN 50191). If the MPD 800 acquisition unit is placed outside these areas, perform additional
precautions in order to achieve an equivalent safety level according to safety standards (see
1.2.1 "Safety standards" on page 6).
DANGER
Death or severe injury caused by high voltage or current
► Always observe the five safety rules (see 1.2.2 "Safety rules" on page 6) before
connecting or integrating the MPD 800 acquisition unit into a system.
► Provide protection against live parts in order to avoid accidental contacts.

MPD 800 User Manual
18 OMICRON
2.2.2 CPL1 and CPL2 external quadripole
Designated use
Figure 2-5: CPL1 and CPL2 external quadripole
The CPL1 and CPL2 external quadripoles are designed to connect the MPD 800 acquisition unit to a
capacitance (coupling capacitor or test object), which drives a reactive current larger than the current the
MPD 800 acquisition unit can handle directly.
CPL2 allows furthermore to operate third party measuring equipment using the same coupling capacitor
or test object as the MPD 800 system. Additional precautions must to be fulfilled to achieve the desired
safety requirements.
DANGER
Death or severe injury caused by high voltage or current
► Always observe the five safety rules (see 1.2.2 "Safety rules" on page 6) before
connecting or integrating CPL1 or CPL2 into a system.
DANGER
Death or severe injury caused by high voltage or current
CPL1 or CPL2 and its accessories are not suitable for reliably checking if a system is
electrically live or energized.
► Do not use CPL1 or CPL2 for safety relevant procedures.

OMICRON 19
MPD 800 measurement system
Front panel connections
Figure 2-6: CPL1 and CPL2 front panel
The BNC outputs PD and AC are connected by short, screened cables (< 20 cm) to the BNC inputs at
the MPD 800 acquisition unit accordingly (see "Rear panel connections" on page 14).
Rear panel connections CPL1
Figure 2-7: CPL1 rear panel
The GND or GND wing nut is connected to the ground with a short connection.
► Do not ground the MPD 800 acquisition unit or its accessories in this case.
The IN input is connected to the bottom end connection of the coupling capacitor or test object.
WARNING
Death or severe injury caused by high voltage or current possible
When the test object is energized flashovers or electrical breakthroughs may occur due
to failure of test object. The MPD 800 acquisition unit and CPL1 or CPL2 are not
designed to withstand power frequency fault currents.
► Always observe the minimum safety distance and use personal safety equipment.
WARNING
Death or severe injury caused by high voltage or current possible
An open AC output may carry hazardous voltage.
► Terminate the AC output using a short-circuit cap.
GND wing nut

MPD 800 User Manual
20 OMICRON
► Do not exceed 7 ARMS reactive current at the IN input.
For low frequencies below 1 kHz, the input impedance is in the < 100 mΩ range. For high frequencies
above 10 kHz, the termination impedance is equivalent to the termination impedance of 50 Ω connected
to the PD output of CPL1. Special versions of CPL1 for NEMA and CISPR measurements feature an
input impedance of 150 Ω or 300 Ω respectively.
Rear panel connections CPL2
Figure 2-8: CPL2 rear panel
The GND wing nut is connected to the ground with a short connection.
► Do not ground the MPD 800 acquisition unit or its accessories in this case.
DANGER
Death or severe injury caused by high voltage or current
A failure inside CPL1 may result in residual charges at the coupling capacitor or test
object, even with high-voltage side grounded.
► Always observe the five safety rules (see 1.2.2 "Safety rules" on page 6) before
connecting or integrating CPL1 into a system.
CAUTION
Minor or moderate injury caused by voltage or current possible
If the ratings are violated, damage or loss of precision of the equipment might be the
consequence.
► Observe the maximum current and power ratings of the measurement input.
► Never connect a voltage source directly to the IN input.
WARNING
Death or severe injury caused by high voltage or current possible
CPL1 is not intended to be used for measurements which are connected directly to
mains circuits (IEC61010-2-030).
► Make sure to connect CPL1 to the test setup using appropriate rated accessories
because CPL1 is not able to handle power frequency fault currents.
GND wing nut