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GB1500992A - Electric supply apparatus and to high-voltage electrostatic apparatus - Google Patents

Electric supply apparatus and to high-voltage electrostatic apparatus

Info

Publication number
GB1500992A
GB1500992A GB162975A GB162975A GB1500992A GB 1500992 A GB1500992 A GB 1500992A GB 162975 A GB162975 A GB 162975A GB 162975 A GB162975 A GB 162975A GB 1500992 A GB1500992 A GB 1500992A
Authority
GB
United Kingdom
Prior art keywords
channel
jan
electric supply
supplied
passes
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB162975A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ransburg Corp
Original Assignee
Ransburg Corp
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
Priority claimed from US00433265A external-priority patent/US3851618A/en
Priority claimed from US433266A external-priority patent/US3875892A/en
Application filed by Ransburg Corp filed Critical Ransburg Corp
Publication of GB1500992A publication Critical patent/GB1500992A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/10—Arrangements for supplying power, e.g. charging power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
    • H02H3/445—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities of DC quantities
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/003—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electrostatic apparatus

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

1500992 Detecting incipient breakdown conditions RANSBURG CORP 14 Jan 1975 [14 Jan 1974 (2)] 1629/75 Heading H2K In an electrostatic coating apparatus, movement of an earthed object 12 towards the h.v. electrode 11, which might lead to sparking, is detected by sensing low-frequency components only (e.g. 0-10 Hz) of the current flowing between the h.v. source and earth. The object 12 may be an article to be coated. In one embodiment the signal from a shunt 13 is supplied to both a first channel 71, which blocks D.C. but passes A.C., and a second channel 72 which passes both D.C. and A.C., phase-shifting the latter to match the phase shift in the first channel. The outputs from the two channels are subtracted (73) to give a signal proportional to the low-frequency components only, and this is supplied to a threshold circuit 75. Another embodiment is described but is identical to that of Specification 1,500,991.
GB162975A 1974-01-14 1975-01-14 Electric supply apparatus and to high-voltage electrostatic apparatus Expired GB1500992A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00433265A US3851618A (en) 1974-01-14 1974-01-14 Electrostatic coating apparatus
US433266A US3875892A (en) 1974-01-14 1974-01-14 Apparatus for avoiding sparks in an electrostatic coating system

Publications (1)

Publication Number Publication Date
GB1500992A true GB1500992A (en) 1978-02-15

Family

ID=27029789

Family Applications (2)

Application Number Title Priority Date Filing Date
GB162875A Expired GB1500991A (en) 1974-01-14 1975-01-14 Electric supply apparatus and to electrostatic coating apparatus
GB162975A Expired GB1500992A (en) 1974-01-14 1975-01-14 Electric supply apparatus and to high-voltage electrostatic apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB162875A Expired GB1500991A (en) 1974-01-14 1975-01-14 Electric supply apparatus and to electrostatic coating apparatus

Country Status (3)

Country Link
DE (1) DE2501235C3 (en)
FR (1) FR2258030B1 (en)
GB (2) GB1500991A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211683A (en) * 1986-08-29 1989-07-05 Cezhan Chen Automatic electric shock protector apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075677A (en) * 1976-08-09 1978-02-21 Ransburg Corporation Electrostatic coating system
DE3219236A1 (en) * 1981-07-08 1983-01-27 Ernst Roederstein Spezialfabrik für Kondensatoren GmbH, 8300 Landshut Method and control device for controlling the high-voltage device of an electrostatic coating apparatus
US4402030A (en) * 1982-02-19 1983-08-30 Champion Spark Plug Company Electrostatic voltage control circuit
DE3709509A1 (en) * 1987-03-23 1988-10-06 Behr Industrieanlagen Monitoring system for an electrostatic coating plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211683A (en) * 1986-08-29 1989-07-05 Cezhan Chen Automatic electric shock protector apparatus
GB2211683B (en) * 1986-08-29 1992-02-26 Cezhan Chen Full automatic electric shock protector apparatus

Also Published As

Publication number Publication date
FR2258030A1 (en) 1975-08-08
DE2501235C3 (en) 1980-09-11
GB1500991A (en) 1978-02-15
DE2501235B2 (en) 1980-01-17
FR2258030B1 (en) 1978-12-08
DE2501235A1 (en) 1975-07-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee