VOLTAGE REGULATORS. HOW TO DETECT CAUSE OF TROUBLES ON GENERATING SYSTEM (only for mechanical type - AVR series Regulators) Cause of troubles

Transcription

1 VOLTAGE REGULATORS HOW TO DETECT CAUSE OF TROUBLES ON GENERATING SYSTEM (only for mechanical type - AVR series Regulators) Phenomenon Cause of troubles Generating circuit Alternator or generator Voltage regurator Others Under-Charging Short circuit, disconnection or incorrent earthing of wiring cord Short circuit, disconnection or incorrect earthing of stator coil Poor regulated voltage Poor contact at battery terminal Low electrolyte level Blown fuse Poor contact at connecting point Short circuit, disconnection or incorrect earthing of rotor coil Slackness of fan belt Poor contact of brush Defective diode Over-Charging Short circuit of B and F terminals Poor contact of circuit at N terminal Disconnection or incorrect earthing of voltage coil Too high regulated voltage Unstable current Short circuit of wiring cord, or cord being almost broken Loose contact at connecting point Poor contact of brush Abrasion or stain of slipring Abrasion of contact point Strange noise Abrasion or defect of bearing Slackness and/or slipping of fan belt Improper instllation of cooling fan Loose fitting of alternator Poor diode 43

2 VOLTAGE REGULATORS HOW TO DETECT CAUSE OF TROUBLES ON ALTERNATOR WITH HYBRID IC REGULATOR Please check your alternator in accordance with the chart below in case of the following troubles: 1.While the engine runs, the charging lamp is ON or blinks. 2.The voltage is not regulated in alternator. 3.Electricity is not generated in alternator. CHART OF CHECK POINTS Is there poor contact at connecting point, or any troubles in the wiring, including fuse of IG circuit, such as disconnection, loss or short circuit? YES When the engine is re-started after the defective parts are repaired, is there still the same trouble? NO NO YES When the ignition swich is OFF, is there a short circuit between L and E terminals? YES (Electricity is not generated.) NO NO When the engine runs at 2000rpm and all the loads except battery are OFF, is the voltage of the battery within 14.5±0.6V? NO (Under) When F terminal is earthed and the engine increases revolutions, is the voltage of B terminal over 13V? YES (Over) Is there a short circuit between F and E terminals? When the engine is re-started after the defective parts are repaired or replaced, is there still the same trouble? NO When alternator runs at 5000rpm, is there the standard output, measured by the bench-tester? NO YES NO YES NO YES When the engine is re-started after the defective parts such as disconnection of rotor coil are repaired, is the voltage of B terminal over 13V? When the engine is re-started after the IC regulator is replaced, is the voltage of B terminal over 13V? After the IC regulator is replaced, is the regulated voltage within 14.5±0.6V? After the defective parts such as poor insulation of rotor coil are repaired and the IC regulator is replaced, is the regulatd voltage within 14.5±0.6V? After the defective parts such as poor diode or startor are repaired, is there the standard output? YES YES YES YES YES The repair is finished. 44

3 VOLTAGE REGULATORS CHECKPOINTS OF OVERHAULING ALTERNATORS 1You can easily remove a pulley nut from the body by using a impact wrench. 2You must not use a sandpaper for grinding the surface of Slip Ring because it will probably cause flashing the warning lamp. 3To check the layer-short, connect the 12V battery between slip ring F and L, and using a Ammeter, check continuity between slip rings. 12V car If Ammeter is less than 4 Amp, rotor coil is normal. 24V car If Ammeter is less than 2 Amp, rotor coil is normal. 4Do not force inserting the bearing to the front cover of alternator by striking it. You make sure to use a special tool of steel plate (30mm~50mm thickness) of same diameter as front bearing in order to install the bearing. Apply grease slightly to the position where the bearing is to be installed before inserting. 5Because terminals in the socket of almost all IC regulators incline to inside slightly (both New-Era and Genuine), strech out terminals using a screw driver, then insert the other side of socket equipped with the body of the vehicle so that it can get contact area wider. Apply Baseline slightly to the socket of body side before hand. 45

4 A PROCEDURE CHART FOR CHANGING IVR-510 TYPE Before changing, surely take off battery terminal (earth side) alternator cover How to take off from alternator IVR 1.Take off a nut (5 points) to above arrow and remove a cover of alternator. 2.Take off a screw (5 points) to above arrow and remove IVR. How to install with alternator brush 3.Check a wear of brush (should be longer than 8.4mm), also short circuit and disconnection of rotor coil. 4.Installation: Please do a reverse procedure. Keep a clean E-terminal from any dust like paint and thread waste!! 46

5 A PROCEDURE CHART FOR CHANGING IVR-800 TYPE Before changing, surely take off battery terminal (earth side) 1. Replacement of IVR Regulator Take off mounting bolts and remove Regulator. Install IVR-800 type carefully. Do not give a shock to Regulator as a shock causes a damage of ceramic substrait of IVR. rubber cap Take off rubber cap and solder each terminals of Regulator. Check a wear of Brush. (shloud be longer than 8.0mm) 2. Installation of IVR solder this terminal to Rectifier. Take care of solldering so that these bolts match to holes of alternator cover. Check short circuit and disconnection of rotor coil. 3. Alternator cover attachment pin rotor B-terminal When rotor goes into alternator cover, please be sure that Brush is fixed by this pin. Be sure that insulator bushing is placed between B-terminal and inside of alternator cover. 47

6 A PROCEDURE CHART FOR CHANGING IVR-900 TYPE Before changing, surely take off battery terminal (earth side) 1. Make suer solder off connecting plate and Rectifier. Then, take bolts off and remove IVR from alternator. connecting plate soldering part Rectifier IVR 2. When changing IVR, make sure if insulating plate goes into the root terminal and install insulating plate of IVR in alternator. Then, solder both Rectifier and connecting plate. rotor insulating plate Brush pin 3. When rotor goes into alternator cover, please be sure that Brush is fixed by this pin. Check a wear of Brush. (should be longer than 8.0mm) 48

7 TROUBLE SHOOTING OF IC REGULATORS (SAWAFUJI TYPE) A) STRUCTURE OF ALTERNATOR RECTIFIER REGULATOR EXCITING COIL STATOR RECTIFIER REAR BRACKET B) CIRCUMSTANCE Recently, we have received same complains about our IC regulators Nos. IVR-252, -253, -254 and -255 not working properly. Before judging from the problems of IC regulators, first of all please check at least your alternator etc. as below. C) HOW TO PROCEED aa) Check points of Alternator 1) Remove and check exciting coil by both method as below. a) Take measurement between lead cables of coil by circuit tester (range = Rx1). If resistance value is 5~7 ohm, alternator is normal. b) Take measurement between lead cable of coil and core by mega tester (500V type mega). If insulating resistance value is over 1 M ohm, alternator is normal. (a) (B) 49

8 TROUBLE SHOOTING OF IC REGULATORS (SAWAFUJI TYPE) 2) Separate stator coil from rear bracket and check by both method as below. c) Take measurement between lead cables of coil (U-V, V-W, W-U) by circuit tester (range = Rx1.) If resistance value is 0.36~0.44 ohm, alternator is normal. d) Take measurement between lead cable of coil and core by mega tester (500V type mega). If insulating resistance value is over 1 M ohm, alternator is normal. (C) (d) bb) Surely solder lead cables of coil to IC regulator's terminals. Soldering places: R, L, N and F terminal. cc) Check rectifier (diode) by circuit tester (Range-Rx1) dd) Make sure if IC regulator properly chosen is suitable to alternator on which it should be fitted. IVR-252 IVR-253 IVR-254 IVR-255 Alternator No Regulator X , X0, -20X X X0 Application HINO NISSAN DIESEL HINO NISSAN DIESEL HINO HINO Terminal L (Lamp/IG), F (field), C (dummy), E (earth) LA (Lamp), N (neutral), R (batterry+), L (IG), F (field), E (earth) R (batterry+), L (IG), F (field), C (dummy), E (earth) R (batterry+), L (IG), F (field), C (dummy), E (earth), N (neutral) 50

9 IVR Checker CN

10 DIFFERENCE OF IVR-200 SERIES New-Era NO. O.E.M. NO. News NO. TERMINALS IVR V X0 190R L (lamp/ig), F (field), C (dummy), E (earth) IVR V X0-20X9 190R LA (lamp), N (neutral), R (battery+), L (IG), F (field), E (earth) IVR V X0 235 R (battery+), L (IG), F (field), C (dummy), E (earth) IVR V X0 235 R (battery+), L (IG), F (field), C (dummy), E (earth), N (neutral) 52

11 DIFFERENCE OF IVR-500 SERIES New-Era NO. O.E.M. NO. CAR MAKERS TERMINALS REGULATED VOLTAGE REMARKS IVR-510J HONDA TOYOTA GM S. L. IG. 14.8±0.3V A C D IVR-511J HONDA SUZUKI Dummy L. IG. 14.8±0.3V A D IVR HONDA C. L. IG. 14.8±0.3V A D E IVR-513J HONDA FR. S. L. IG. 14.8±0.3V A C D G IVR-514J HONDA FR. Dummy L. IG. 14.8±0.3V A D G IVR HONDA FR. C. L. IG. 14.8±0.3V A D E G IVR HONDA TOYOTA S. L. IG. 14.8±0.3V A B C D IVR DAIHATSU ISUZU SUZUKI GM Dummy L. IG. 14.8±0.3V A D IVR TOYOTA S. L. IG. 14.8±0.3V A B C D IVR HONDA FR. S. L. IG. 14.8±0.3V A B C D G IVR DAIHATSU SUZUKI L. IG. 14.8±0.3V A D IVR DAIHATSU MAZDA SUZUKI SUBARU L. IG. 14.8±0.3V A IVR TOYOTA S. IG. L. 14.8±0.3V A B C D IVR TOYOTA S. IG. L. 14.8±0.3V A B C F IVR ISUZU Dummy L. IG. 14.8±0.3V A B D F IVR HONDA SUZUKI C. L. IG. 14.8±0.3V A B D E IVR DAIHATSU HINO TOYOTA S. L. IG. B. 28.5±0.3V A B C D IVR DAIHATSU HINO TOYOTA S. IG.L. 28.5±0.3V A B C D IVR TOYOTA S. IG.L. 14.8±0.3V A B C D F IVR MITSUBISHI YANMAR P. IG.L. 14.8±0.3V A IVR SUBARU L. IG. 14.8±0.3V A D 53

12 DIFFERENCE OF IVR-500 SERIES New-Era NO. O.E.M. NO. CAR MAKERS TERMINALS REGULATED VOLTAGE REMARKS IVR / TOYOTA S. L. IG. 14.8±0.3V A B C IVR-535 IVR-536 IVR MAZDA TOYOTA HONDA L. IG. C. FR. 14.8±0.3V A E G HONDA L. IG. S. FR. 14.8±0.3V A B C G S. L. IG. 14.8±0.3V A B C F IVR HINO L. N. LA. 14.8±0.3V A IVR MITSUBISHI 14.8±0.3V A IVR HONDA FR. S. L. IG. 14.8±0.3V A B C D G IVR-543 IVR TOYOTA S. IG. L. 14.8±0.3V A B C DAIHATSU TOYOTA S. L. IG. 14.8±0.3V A B C IVR HONDA TOYOTA S. L. IG. 14.8±0.3V A B C D IVR HONDA ISUZU IVR SUZUKI Dummy IG. L. C. IG. L. 14.8±0.3V A D E 14.8±0.3V IVR TOYOTA L. IG. S. 14.8±0.3V A B C A B IVR HONDA P. IG. S. E. L. F. 14.8±0.3V A B C D IVR TOYOTA S. L. IG. 28.5±0.3V A B C D IVR D ISUZU S. L. IG. 14.8±0.3V A B C D F IVR ISUZU Dummy L. IG. 14.5±0.3V A IVR TOYOTA S. L. IG. 14.8±0.3V A B C D F IVR-5004 IVR TOYOTA L. IG. M. 14.5±0.3V A SUZUKI Dummy. L. IG. 14.8±0.3V A B F IVR TOYOTA L. IG. M. C. 14.5±0.3V A E 54

13 DIFFERENCE OF IVR-500 SERIES New-Era NO. O.E.M. NO. CAR MAKERS TERMINALS REGULATED VOLTAGE REMARKS IVR DAIHATSU S. L. IG. 14.5±0.3V A B C D IVR TOYOTA S. L. IG. 14.8±0.3V A B C D F IVR ISUZU S. L. IG. 14.5±0.3V A C IVR VOLVO L. 14.6±0.3V A IVR TOYOTA S. L. IG. M. 14.5±0.3V A C IVR S. L. IG. 14.5±0.3V A B C IVR-5013 IVR TOYOTA L. IG. FR 14.4±0.3V A F TOYOTA S. L. IG. 14.4±0.3V A IVR TOYOTA NISSAN MITSUBISHI C. L. IG. FR 14.5±0.3V A E G IVR TOYOTA P. L. IG. 14.5±0.3V A B IVR TOYOTA S. L. IG. FR 14.2±0.3V A B C G IVR TOYOTA Dummy L. IG. 28.5±0.3V A B D IVR TOYOTA S. L. IG. FR 14.2±0.3V A B C F G IVR ISUZU Dummy L. 14.4±0.3V A B F IVR TOYOTA C. L. IG. FR 14.4±0.3V A B E F G IVR TOYOTA C. L. IG. FR 14.4±0.3V A B E F G IVR TOYOTA S. L. IG. 14.2±0.3V A B C F IVR TOYOTA S. L. IG. FR 14.2±0.3V A B C F G IVR TOYOTA C. L. IG. FR 14.4±0.3V A B E F G IVR TOYOTA C. L. IG. FR 14.4±0.3V A B E F G IVRS DAIHATSU ISUZU SUZUKI GM Dummy L. IG. 14.8±0.3V A TERMINALS S: Battery (+) L: Charge Lamp IG: Ignition Switch FR: Field Coil P: Square wave pulse (into tachometer) C: Control (Input from ECU) M: Control (Output to ECU) 55

14 FUNCTIONS: DIFFERENCE OF IVR-500 SERIES A. Basic Functions Voltage control, On/Off of charge lamp and Alarm of rotor coil wire breaks. B. Low Voltage Alarm The charge lamp lights up when the battery voltage falls below approximately 10V. C. S-Terminal Off Alarm When the S-terminal gets disconnected, the charge lamp lights up. D. On/Off of L-Terminal Load (Choke) On/Off of load of L-terminal installed on the car body. E. Adjustment Value Change-Over Switch Reads the signal from the ECU (computer) at C-terminal whether it is HI or LOW and in the event it is LOW, it reduces the adjustment value to about 12.5V. When the adjustment value is reduced, the resistance to the engine is reduced. F. Adjustment Value Change-Over Switch When headlights, heater, windscreen defroster and other electrical devices are brought into operation at idling speed, there is a rapid increase of demand on the alternator, which increases load on the engine. This causes a drop in engine idle speed, which can lead to stalling. By gradually increasing the output from the alternator, the load on the engine is reduced and spread over a longer period, this avoiding the drop in engine speed. G. FR Terminal Output A terminal for the ECU (computer) to read the generation On/Off signal is incorporated. 56

15 DIFFERENCE OF IVR-800 SERIES New-Era NO. O.E.M. NO. CAR MAKERS TERMINALS IVR-801 IVR-803 TR1Z NISSAN SUBARU REGULATED VOLTAGE REMARKS B.L.S.F.E. 14.6±0.3V Voltage is detected from L terminal when S terminal opens. TR1Z-46 ISUZU B.S.R.F.E. 14.6±0.3V An auxiliary diode is omitted. If IVR-801 is fitted instead of IVR-803, discharge current passes from battery to overdischarge through field coil. IVR-804 TR1Z ISUZU SUBARU YANMAR ISEKI R.R.L.F.E. 14.4±0.3V If both two R terminals are not connected, voltage regulation is impossible unless rotary speed of engine is raised. IVR-805 TR1Z-64-64A NISSAN B.S.R.L.F.E. 14.6±0.3V Built-in starting resistance (48Ω) IVR-806 TR1Z NISSAN ISUZU MAZDA B.S.R.L.F.E. 14.6±0.3V Built-in starting resistance (30Ω) L ISUZU B.S.R.L.F.E. 14.6±0.3V IVR-806 WITH BRUSH HOLDER IVR-807 L R S L NISSAN B.L.S.E 14.6±0.3V IVR-805 WITH BRUSH HOLDER IVR-808 L S L L NISSAN B.L.S.E 14.6±0.3V IVR-805 WITH BRUSH HOLDER IVR-809 L S LR B NISSAN IVR-860 TERMINALS B: Alternator (+) L: Charge Lamp S: Battery (+) R: Ignition Switch F: Field Coil E: Earth 57

16 DIFFERENCE OF IVR-900 SERIES New-Era NO. O.E.M. NO. CAR MAKERS TERMINALS IVR-901H IVR-904H A866T00470 A866T00670 A866T01970 A866T02570 A866T03270 A866T02270 A866T04070 MAZDA MITSUBISHI MAZDA MITSUBISHI REGULATED VOLTAGE FEATURES R. L. F. E. 14.5±0.3V Type with built-in starting resistance. R. L. F. E. 14.5±0.3V Reverse current prevention diode has been added to R terminal. IVR-904H is more suitable for vehicles the engine room temperature of which is apt to rise than IVR-901H. IVR-902H IVR-903H A866T00870 A866T02970 A866T03070 A866T00340 NISSAN S. L. F. E. 14.5±0.3V Not built-in with starting resistance. If IVR-901H or IVR-904H fitted instead of IVR- 902H, battery is overdischarged in 3-4 days. IVR-902H is fitted instead of IVR-901H, charge lamp does not go out unless axle pedal is stepped in. Also battery is overcharged if generated. MAZDA R. L. F. E. 14.5±0.3V Same type as IVR-924H with different regulated voltage. IVR-924H A866T00350 MAZDA R. L. F. E. 28.3±0.3V Same type as IVR-903H with different regulated voltage. IVR-910H A866X02470 MAZDA R. L. F. E. 14.5±0.3V Without C terminal. IVR-911H IVR-922H A866X02170 MAZDA R. L. C. F. E. 14.5±0.3V With C terminal. Connected to CPU (Central Processing Unit) on the vehicle side. *Regulated voltage falls about 1.0V if C terminal is earthed. A866X02370 MAZDA B. L. F. E. 28.5±0.3V Not built-in with starting resistance. L terminal alone has both voltage detection and charge lamp turning-on functions. IVR-921H A866X01070 MITSUBISHI B. L. F. E. 28.5±0.3V Not built-in with starting resistance. IVR-925H IVR-905 IVR-912H IVR-923H IVR-926 A866X03170 MITSUBISHI 28.5±0.3V Type with built-in starting resistance. *If IVR-925H is fitted instead of IVR-921H:1 Engine stops due to starting resistance and battery is over-discharged in 3~4 weeks. *If IVR-921H is fitted instead of IVR-925H:2 Charge lamp does not go out unless the axle pedal is stepped in. There is no trouble in vehicle with ammeter, however. A866T06570 MITSUBISHI R. L. F. E. 14.5±0.3V Type with built-in starting resistance (50Ω). Reverse current prevention diode has been added to R terminal. Same shape with IVR-923H. A866X01670 MITSUBISHI R. L. F. E. 14.5±0.3V Type with built-in starting resistance (60Ω). Reverse current prevention diode has been added to R terminal. A866T06670 MITSUBISHI R. L. F. E. 28.5±0.3V Type with bulit-in starting resistance (470Ω). Reverse current prevention diode has been added to R terminal. Same shape with IVR-905. A866T06870 MITSUBISHI R. L. F. E. 28.5±0.3V Type with built-in starting resistance (470Ω). Reverse current prevention diode has been added to R terminal. 58

17 RECTIFIERS TEST METHOD OF RECTIFIER 1. Please check conduction of all diodes using circuit tester. 2. Please test two times after pole (+ -) bars of tester have being changed. 3. It is normal condition when conduction is either forward or reverse way. JUGEMENT POSITION OF POINTER OF TESTER (Range-10KΩ) Good Pointer moves approx two third (2/3) Short circuit Pointer fully moves Defect Disconnection Pointer does not moves 59

18 STARTER SOLENOIDS 1. Structure of Starter Solenoid Starter solenoid consists of the followings. 1Main terminal (M) 2Connecting terminal (B) 3Main contact plate 4Magnetic core 5Spring 6Return spring 7Pull-in coil 8Holding coil 9Plunger (moving iron core) 10Moving stud 2. Operation of Starter Solenoid (1) When Ignition Key is switched on, Starter Solenoid start to operate i.e. Plunger and Moving Stud are magnetically pulled. Fork Shift Lever is pushed out, then Pinion is geared into Ring Gear. (2) As soon as Pnion is geared into Ring Gear, Engine is started revolving by high output. (3) When Engine is started to revolving, Starter Solenoid is off and Plunger returns by force of Return Spring. 60

19 STARTER SOLENOIDS HOW TO DETECT CAUSE OF TROUBLES ON STARTING MOTOR Phenomenon Check points Causes Battery Improper specific gravity of acid Without operating sound of Solenoid Switch nor revolution of Starter Motor Ignition circuit Solenoid switch Wiring Ignition switch Pull-incoil Plunger Poor connection Poor contact Disconnection or short circuit No sucking Battery Improper specific gravity of acid Without operating sound of Solenoid Switch and no revolution of Starter Motor Ignition circuit Wiring Poor connection Solenoid switch Main contact point Poor contact Starting motor Amature Short of coil Stained commutator With operating sound of Solenoid Switch and no revolution of Starter Motor Starting motor Amature Field coli Brush Holder Mica sticking out of the set position Poor contact Excessive abrasion Poor pressure of spring Solenoid switch Main contact point Poor contact With slow revolution of Starter Motor Starting motor Amature Field coli Brush Short of coil Disconnection of excessive abrasion of commutator Poor contact Excessive abrasion Holder Poor pressure of spring Bush Excessive abrasion 61

20 There are two kinds as follows: 1. Cut - Switching on and off in the circuit on side of Battery. BATTERY RELAY Cut BATTERY RELAYS Ignition switch Chassis earth S B ST IG AM Battery Chassis earth Chassis earth 2. Cut - Switching on and off in the circuit on side of Battery. Battery BATTERY RELAY Cut S B Ignition switch ST Starter solenoid IG AM 62

21 HEAVY DUTY RELAY New-Era No. Rated Current Exciting Current ON Voltage Closed Circuit OFF Voltage Open Circuit Durability Material of Point Exsample for use SS-81 24V 300A 30 sec. BELOW 3.1A BELOW DC16A BELOW DC8V 50,000 CYCLES Copper Driving realy for oil hydraulic motor Universal realy for large current With circuit for surge Specification of water resistance : JIS D

22 LIGHT RELAYS New-Era No. Rated Voltage Load Current Circuit Exciting Current Ambient Temperature Durability 360W Lamp Exsamples NLR V Continuous 30A Continuous 30A 1 Circuit MAX. 0.2A -30 ~80 MIN. CYCLES 30,000 CYCLES 2 Circuits B A NLR V Continuous 30A Continuous 7.5A 1 Circuit MAX. 0.1A -30 ~80 MIN. CYCLES 30,000 CYCLES 2 Circuits B A Exsample for use (A) Exsample for use (B) 64

23 CONTACT POINT SET FOR DISTRIBUTOR Name of Parts Cam-Follower Arm Contact Base Arm Spring Terminal Bushing Lead Wire Ass'y Features Material: Cloth based Phenol-Resin (Bakelite). Superior in abrasion and heat resistance. Uniformity of dimention by Transfer Press-Machine. Full-Automation from cutting and processing. Uniformity of spring pressure. Superior in corrosion resistance. Material: PE (Polyethylene) Superior in heat resistance, max Two layer structure of glass tube film on silicon rubber. Superior in heat resistance. MUTUAL RELATIONSHIP BETWEEN CONTACT POINT SET AND CONDENSER The Contact Point set plays an important role in the ignition system, interrupting the current (primary current) flowing to the Ignition Coil by way of the Distributor Cam. However, when interruption occurs it sparks and burns the face of the Contact Point Set, occasionally causing an accidental fire. To absorb such sparks, and to protect the Contact Point Set from burning and eventually preventing a voltage drop, a Condenser is used. We would therefore recommend that when replacing the Contact Point Set, you should always also replace the less efficient Condenser with a new one. A fresh Condenser will guarantee the Contact Point Set. 65

24 CONDENSERS FOR SURGE VOLTAGE Recently, Automobiles are automatically controlled by electronics. In this case, however, electronic automatic control is wrongly worked sometimes by Surge Voltage occured from various Motors, Relays, and Alternators. Various condensers are used in order to absorb the surge voltage. ELECTRICAL PARTS CREATING SURGE VOLTAGE SURGE VOLTAGE SPECIFICATIONS ON CONDENSERS FOR SURGE VOLTAGE Specifications NCM-905 Rated Capacity 0.5μF Rated Voltage 250V Withstand Voltage AC 700V/60 Sec. Insulating Resistance 5MΩ Max/500V minutes 66