DC Link Voltage Monitor for Power Electronics DLM1700 User Manual
Contents
1. DC Link Voltage Monitor for Power Electronics DLM1700 User Manual type DLM1700 version 1 01 document 1 5 eng date 17 04 2009 Ing B ro M Billmann 04 2009 Lerchensteige 10 D 91448 Emskirchen Telefon 49 0 9104 8235 88 Fax 49 0 9104 8235 89 email info ib billmann de DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 1 11 ING B RO M BILLMANN DLM1700 DC Link Voltage Monitor for Power Electronics m Fig 1 DLM1700 elements DLM1700_Bed_Anleitung_v1 5_oce_eng doc 17 04 2009 M Billmann 2 11 Description of elements Front side elements and interfaces Analog voltage indicator tolerant up to 1 7kVpc not calibrated Groups of flashing red LEDs when DC link voltage is high Group of green LEDs illuminating when DC link voltage 25V Safety instructions follow and read carefully DC link connection cable firmly attach to DC link voltage Applicable nominal and max level of DC link voltage o gus com DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 3 11 Contens Seite 2 About this document 5 2 1 How to use this document 5 2 2 Used symbols and abbreviations 5 3 Description 5 3 1 Intended usage 6 3 2 Safety 6 3 3 Warning hints legal stuff 7 4 Functional description 7 5 Start up and operation 8 5 1 Check functionality of DLM1700 8 5 2 Prepare DLM1700 for operation 8 5 3 Technical data 8 6 Fai2. are one box and a pair of high voltage cables that must be attached to the DC link before energy is present The unit needs no additional power supply it is operated and supplied from the DC link voltage from 16Vpc to 1 700Vpc abs max 3 1 Intended Usage This unit is designed for industrial use in electronic laboratories and test benches of power electronics only This unit indicates for qualified personal whether dangerous voltages are still present at a DC link or the DC link is discharged down to a safe level Warning Never use one instrument only Always check with redundant systems Never rely on one indication when others show danger Use this unit in dry and suitable clean areas only and provide sufficient cooling 3 2 Safety This section is for your safety Please read this section carefully before operating the DLM1700 Qualified personal The DML1700 may only be started and operated by qualified personal Qualified is who has suitable technical training and has got technical instruction from a trained user or the manufacturer concerning the start up and the operation of the DLM1700 and has access to this manual at any time Reservations of the manufacturer Maintenance and service may only be fulfilled by qualified service personal with suitable technical training There are no serviceable components inside the main case of the DLM1700 Always disconnect all energy sources when electrical or me
3. chanical service is applied Spare parts as well as tools must meet the technical demands of the manufacturer For preservation of warranty only original replacement parts must be used Technical details may change without notice DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 6 11 3 3 Warning hint exclusion of liability This unit monitors dangerous voltages and indicates them visually to laboratory staff Warning The DLM1700 may show low or no DC link voltage if the box is damaged cables are damaged or not proper connected to the DC link Always use redundant elements to double check DC link voltage Always provide sufficient cooling for unit Never thermally isolate the back side of the box Ambient temperature must not exceed 40 C Any liability for damages and injuries caused by the use of this DC link monitor DLM1700 is excluded 4 Functional description The DLM1700 is designed as a two channel DC link monitor to check for dangerous voltages at a DC link or other capacitor banks The analog display operates as a moving coil instrument and directly indicates voltages from zero up to 150Vpc If voltage exceeds the needle reaches a red zone This zone is linear up to a DC link voltage level of 300Vpc and tolerates voltages up to 1 700Vpc max At levels exceeding 300Vpc the display will remain in maximum red bar position Once a voltage gt 24Vpc is applied the two groups of red LEDs start to flash Th
4. ey additionally indicate presence of dangerous voltage At levels lower than typ 25V to 30V the red LEDs stop flashing and the green LED bar starts illuminating They will remain illuminated until DC link voltage levels lower than typically 20V Any laboratory staff should always watch at least two redundant connected and operating systems To check proper discharge and correct function of a DLM1700 analog instrument and red flashing LEDs must be observed When discharging the DC link the red LEDs must keep flashing while the analog instrument shows DC link voltage decreasing When low voltage is reached the green LED bar must illuminate until DC link voltage reaches a level lower than typ 20V After this the box discontinues electrical operation power down DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 7 11 5 Start up and operating the unit 5 1 Check functionality of DLM1700 Always make sure that the unit is functional before attaching to DC link Check for damage of cables damage of box cracks loose bushings internal appearance smoke burned components PCBs Then Apply 50Vpc from a laboratory power supply and check for flashing red LEDs plus analog voltmeter display Reduce power supply voltage to 15V and check for green LEDs to illuminate while the red LEDs stop flashing Also observe the change in position of the voltmeter s needle Hint The power dissipation of the unit is mainly tran
5. lure 9 7 Maintenance Service Accessories 9 7 1 Maintenance 9 7 2 Service 9 7 3 Accessories 10 8 Annex 10 8 1 Declaration of Conformity 11 8 2 Schematic A1 A2 8 3 Part location on main PCB B1 B2 DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 4 11 2 About this document This document describes how to operate setup and check function of troubleshoot the DC link Monitor for Power Electronics DLM1700 2 1 How to use this document Please read this manual carefully to operate the DLM1700 correctly On page 2 and 3 you will find the control elements and interfaces listed in graphical illustration to get an easy link to the description in this manual This document targets to the following group of persons Professionals in Power Electronics Electronics engineers in the field of IGBT stack development and testing 2 2 Used Symbols and abbreviations Hint Hints describe the advantages of certain adjustments and setups and assist You to draw out maximum performance of the unit Warning Warnings Read and follow these instructions carefully Warnings shall prevent people from danger and help to avoid damage of the unit or the device under test DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 5 11 3 Description The DLM1700 is a DC link monitoring unit with two independent indicators red flashing LEDs and analog display to confirm if high DC voltage is present Both indicators sh
6. sferred to the rear side of the box Always allow sufficient cooling there Do not cover the rear side with thermally isolating material For long term use with high voltages consider attaching the rear side to a cool metal surface using a heat transferring foil or similar devices The DLM1700 is designed for operation up to 40 C ambient 5 2 Prepare DLM1700 for operation Firmly attach DC link cables to the DC link that has to be monitored Polarity is indicated by red plus and black minus cables but the unit will also handle and indicate voltage in reverse polarity without damage DLM1700 will start operation within much less than a second after applying a voltage of 24Vpc or higher Warning Never attach DLM1700 to a life charged DC link Only connect when DC link is completely discharged 5 3 Technical data Analog moving coil instrument 0 150Vpc red bar up to 1 700Vpc Boxoperational within a DC voltage range from OV to 1 700 V abs max Current into unit 6mA Reverse polarity tolerant Ambient temperature 40 C max Cable is capable to carry 2kV even if hand held DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 8 11 Failure In case of failure immediately power down the attached DC link and disconnect the DLM1700 after safe discharge In case of damages please consult us directly 7 Maintenance Service Accessories 7 1 1 2 Maintenance This unit does not need maintenance It ma
7. unction of accessory parts available on stock is in permanent growth 8 Annex This section provides additional documentation that was given by Ing B ro M Billmann or third parties 8 1 Declaration of Conformity 8 2 Schematic of PMG 02 8 3 Part location on main PCB DLM1700 Bed Anleitung v1 5 oce eng doc 19 05 2004 M Billmann 10 11 Dipl Ing Markus Billmann Lerchensteige 10 91448 Emskirchen Dipl Ing M Billmann Lerchensteige 10 91448 Emskirchen Declaration of Conformity CE Manufacturers name and adress Ing B ro Markus Billmann Lerchensteige 10 91448 Emskirchen The Ing B ro M Billmann herewith declares conformity of the product Product name DC link Monitor Type DLM1700 Options With applicable regulations EMV Directive 89 336 EWG amended by 91 263 EWG 92 31 EWG Low Voltage Equipment Directive 73 23 EWG amended by 93 68 EWG Harmonized standards applied Safety EN61010 1 VDE 411 1 Safety instructions for electronic laboratory devices EN60664 VDE 0110 Isolation Pollution degree 1 Technical documentation is fully provided Operators manual is attached A bill Emskirchen den 09 04 09 M Billmann C E O DLM1700 Bed Anleitung v1 5 oce eng doc 19 05 2004 M Billmann 11 11
8. y only be operated in dry clean areas Take care that the unit is kept in a non dusty condition Dust may cause dysfunction or reduced performance Abandonment 1 Discharge the connected DC link 2 Disable all energy sources and disconnect the unit from DC link Disassembly For disassembly proceed as follows 1 Dismount the unit into single components 2 Sort these components for material plus disposal criteria and hand it to an official waste management Disposal Hint Respect the specific disposal regulations of Your country Service Never carry out repair on your own please contact Ing B ro M Billmann phone 49 0 9104 8235 88 Lerchensteige 10 fax 49 0 9104 8235 89 D 91448 Emskirchen email M Billmann t online de DLM1700 Bed Anleitung v1 5 oce eng doc 17 04 2009 M Billmann 9 11 7 3 Accessories The DLM1700 was developed considering a long year experience in power electronics The goal to create useful things to make power electronics design and application engineer s life easier is main issue In correlation to achieve this goal there is available a variety of fast DC link dischargers and crowbars pulse generators for IGBT characterization fiber optical transmitters fiber optical receivers error input scope trigger adaptors for Semikron SKiiP interfaces coaxial high frequency shunts For custom specific demands or special options please contact us directly Quantity and f
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