WO1999014720A3 - Method and arrangement for supervising power supply equipment - Google Patents

Method and arrangement for supervising power supply equipment Download PDF

Info

Publication number
WO1999014720A3
WO1999014720A3 PCT/FI1998/000722 FI9800722W WO9914720A3 WO 1999014720 A3 WO1999014720 A3 WO 1999014720A3 FI 9800722 W FI9800722 W FI 9800722W WO 9914720 A3 WO9914720 A3 WO 9914720A3
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
current
arrangement
rectifier
units
Prior art date
Application number
PCT/FI1998/000722
Other languages
Finnish (fi)
French (fr)
Other versions
WO1999014720A2 (en
Inventor
Jari Raussi
Original Assignee
Nokia Telecommunications Oy
Jari Raussi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Telecommunications Oy, Jari Raussi filed Critical Nokia Telecommunications Oy
Priority to AU91653/98A priority Critical patent/AU9165398A/en
Publication of WO1999014720A2 publication Critical patent/WO1999014720A2/en
Publication of WO1999014720A3 publication Critical patent/WO1999014720A3/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G08C19/025—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage using fixed values of magnitude of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rectifiers (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The invention relates to a method and arrangement for supervising the operating condition of a power supply system comprising parallel rectifier units. Each rectifier unit to be supervised is equipped with a power supply (211, ... 251) so that if the specified feature of the unit is in order, the power supply feeds a constant current (e.g. I1), but when there is a failure, it does not feed the current. The signal currents fed by different units are summed, and the sum current (I) is passed along the conductor pair (205) through the reception circuit (110) of the control unit. The value of the current (I) then indicates the number of rectifier units that are operational. If there are several types of failures that are monitored, an arrangement like this is provided for each type separately. The information given by the current signals is used to give an alarm. By means of the arrangement according to the invention, the type of urgency of the alarm can be determined at once, which is an advantage for maintenance. In addition, the costs of cabling between the rectifier units and the control unit are relatively low.
PCT/FI1998/000722 1997-09-16 1998-09-15 Method and arrangement for supervising power supply equipment WO1999014720A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU91653/98A AU9165398A (en) 1997-09-16 1998-09-15 Method and arrangement for supervising power supply equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI973700A FI973700A (en) 1997-09-16 1997-09-16 Method and arrangement for monitoring the equipment
FI973700 1997-09-16

Publications (2)

Publication Number Publication Date
WO1999014720A2 WO1999014720A2 (en) 1999-03-25
WO1999014720A3 true WO1999014720A3 (en) 1999-05-14

Family

ID=8549540

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1998/000722 WO1999014720A2 (en) 1997-09-16 1998-09-15 Method and arrangement for supervising power supply equipment

Country Status (3)

Country Link
AU (1) AU9165398A (en)
FI (1) FI973700A (en)
WO (1) WO1999014720A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6255999B2 (en) * 2013-12-27 2018-01-10 株式会社リコー DC / DC converter, switching power supply device and electronic device
JP6357773B2 (en) * 2013-12-27 2018-07-18 株式会社リコー DC / DC converter, switching power supply device and electronic device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523056A (en) * 1982-12-27 1985-06-11 Reliance Electric Company Telephone including resistive array for dialing and system for using such telephone
US4652876A (en) * 1985-09-03 1987-03-24 Mobil Oil Corporation Remote switch position determination using constant current signaling

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523056A (en) * 1982-12-27 1985-06-11 Reliance Electric Company Telephone including resistive array for dialing and system for using such telephone
US4652876A (en) * 1985-09-03 1987-03-24 Mobil Oil Corporation Remote switch position determination using constant current signaling

Also Published As

Publication number Publication date
WO1999014720A2 (en) 1999-03-25
AU9165398A (en) 1999-04-05
FI973700A0 (en) 1997-09-16
FI973700A (en) 1999-03-17

Similar Documents

Publication Publication Date Title
US6552443B1 (en) Power ring
EP0800254A3 (en) Electric power distribution system
MY122232A (en) Electrical fault detection system
CA2149616A1 (en) Control Interface for Customer Replaceable Fan Unit
AU576993B2 (en) Residual differential device
AU680549B2 (en) Switching installation for distributing electric power protected against arc interference
WO1994019849A1 (en) Electric power distribution module for an electric power generation and distribution system
CN1082737C (en) Connection in particular a plug-in connector for TT and TN networks
ES8506905A1 (en) System and method for detecting proximity to electrical power lines.
KR890003650B1 (en) Secondary conductor supervising device of resistance welder control system
WO1999014720A3 (en) Method and arrangement for supervising power supply equipment
JPH1062476A (en) Deterioration detector for printed board in electronic apparatus
WO2002037653A3 (en) A method and apparatus for automatically detecting and managing an ac power fault
JP2916075B2 (en) Distribution system disconnection detection method
JPH1061400A (en) Tunnel disaster prevention system
WO2004003497A3 (en) Temperature monitoring system for electrical equipment
Peck et al. A new numerical busbar protection system with bay-oriented structure
GB9613759D0 (en) Apparatus for monitoring a document
KR19980031066A (en) Marine Earth Leakage Alarm System
JP2891695B1 (en) Failure detection device for switching switches for AC electric railways
JPH05252673A (en) Power supply
JPH06321027A (en) Power supply breaking device
JP2902492B2 (en) Power distribution system
ES1043656U (en) Device for continuously monitoring a telephone line integrity.
SU1159087A1 (en) Device for monitoring serviceability of fuse in single-wire d.c.circuits

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA