FR2268270A1 - Insulation measurer for electric vehicle motor - actuates alarm when leakage resistance falls below set value - Google Patents
Insulation measurer for electric vehicle motor - actuates alarm when leakage resistance falls below set valueInfo
- Publication number
- FR2268270A1 FR2268270A1 FR7413927A FR7413927A FR2268270A1 FR 2268270 A1 FR2268270 A1 FR 2268270A1 FR 7413927 A FR7413927 A FR 7413927A FR 7413927 A FR7413927 A FR 7413927A FR 2268270 A1 FR2268270 A1 FR 2268270A1
- Authority
- FR
- France
- Prior art keywords
- leakage resistance
- falls below
- measurer
- insulation
- set value
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
- G01R27/18—Measuring resistance to earth, i.e. line to ground
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The propulsion unit comprises an accumulator battery pack and one or more electric drive motors which provide a parasitic capacitance and a leakage resistance w.r.t. the vehicle's earth. The measurement device has an alternating voltage source connected to the vehicle's earth through a capacitor and connected also to the negative terminal of the battery of the propulsion unit through an impedance. Means are provided for detecting the voltage across the terminals of the impedance and an associated device controls the power supply to a warning device when the leakage resistance of the propulsion unit falls below a safety threshold.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7413927A FR2268270A1 (en) | 1974-04-22 | 1974-04-22 | Insulation measurer for electric vehicle motor - actuates alarm when leakage resistance falls below set value |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7413927A FR2268270A1 (en) | 1974-04-22 | 1974-04-22 | Insulation measurer for electric vehicle motor - actuates alarm when leakage resistance falls below set value |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2268270A1 true FR2268270A1 (en) | 1975-11-14 |
FR2268270B1 FR2268270B1 (en) | 1979-03-16 |
Family
ID=9137941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7413927A Granted FR2268270A1 (en) | 1974-04-22 | 1974-04-22 | Insulation measurer for electric vehicle motor - actuates alarm when leakage resistance falls below set value |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2268270A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995034824A1 (en) * | 1994-06-10 | 1995-12-21 | Northrop Grumman Corporation | Fault detection circuit for sensing leakage currents between power source and chassis |
EP0724980A1 (en) * | 1995-02-04 | 1996-08-07 | Daimler-Benz Aktiengesellschaft | Vehicle with fuel cell or battery supplied electric network |
FR2734060A1 (en) * | 1995-05-08 | 1996-11-15 | Chrysler Corp | CIRCUIT FOR DETECTING ELECTRICAL FAULTS SUCH AS ELECTRICAL INSULATION BREAKDOWNS, ESPECIALLY IN A MOTOR VEHICLE DRIVEN BY AN ISOLATED ELECTRIC DRIVE SYSTEM OF ITS CHASSIS, AND ASSOCIATED DETECTION METHOD |
-
1974
- 1974-04-22 FR FR7413927A patent/FR2268270A1/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995034824A1 (en) * | 1994-06-10 | 1995-12-21 | Northrop Grumman Corporation | Fault detection circuit for sensing leakage currents between power source and chassis |
EP0724980A1 (en) * | 1995-02-04 | 1996-08-07 | Daimler-Benz Aktiengesellschaft | Vehicle with fuel cell or battery supplied electric network |
US5760488A (en) * | 1995-02-04 | 1998-06-02 | Daimler-Benz Ag | Vehicle having a fuel cell or battery energy supply network |
FR2734060A1 (en) * | 1995-05-08 | 1996-11-15 | Chrysler Corp | CIRCUIT FOR DETECTING ELECTRICAL FAULTS SUCH AS ELECTRICAL INSULATION BREAKDOWNS, ESPECIALLY IN A MOTOR VEHICLE DRIVEN BY AN ISOLATED ELECTRIC DRIVE SYSTEM OF ITS CHASSIS, AND ASSOCIATED DETECTION METHOD |
Also Published As
Publication number | Publication date |
---|---|
FR2268270B1 (en) | 1979-03-16 |
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