Westinghouse OV-25 Replacement Capacitors « on: September 30, 2018, 11:55:06 AM » Author: BT25
I'm hoping someone can help fill me in... I have a second generation 400W MV OV-25 (appears to be 120V...have not tried it yet...don't want to blow the PCB capacitors) that has two original capacitors wired in series that are slightly bulging. Unfortunately, they are rusty and the data stamp is very hard to decipher. What I need is the uF (micro-fared). Does anyone have a similar lumenaire that they can check? From what I can find online, its probably a 26uF or 35uF requirement, but I want to make sure before I make a purchase. Thank-you in advance.
« Last Edit: October 02, 2018, 10:34:10 AM by WestinghouseCeramalux »		Logged

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	Re: Westinghouse OV-25 Replacement Capacitors « Reply #1 on: September 30, 2018, 11:39:47 PM » Author: wide-lite 1000
The Advance 120 v 400 h-33 I mave says to use 35uF
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	Re: Westinghouse OV-25 Replacement Capacitors « Reply #2 on: October 02, 2018, 10:31:08 AM » Author: BT25
Update: I was able to just make out the text on the bottom of the rusty OE Westinghouse capacitor. There are two capacitors. Together they are 29.2 uF. Has anyone used a 30uF as a replacement? (A 29uF is almost impossible to find.) A 28uF may also work OK, but I don't have enough experience with sizing capacitors. Brand: Westinghouse Part No.: xxxxxxH01 Capacity: 14.6 MFD Voltage: x80 VAC (The x's reference numbers that are illegible.)
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First known case of Westinghouse Lifeguard Disease!
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	Re: Westinghouse OV-25 Replacement Capacitors « Reply #3 on: October 02, 2018, 04:16:24 PM » Author: Rommie
Quote from: WestinghouseCeramalux on October 02, 2018, 10:31:08 AM Update: I was able to just make out the text on the bottom of the rusty OE Westinghouse capacitor. There are two capacitors. Together they are 29.2 uF. Has anyone used a 30uF as a replacement? (A 29uF is almost impossible to find.) A 28uF may also work OK, but I don't have enough experience with sizing capacitors. Capacitors (at least those I've used for PF correction) usually have a tolerance of +/- 10%, so if 30µF is specified, then +/- 3µF would be within spec.
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	Re: Westinghouse OV-25 Replacement Capacitors « Reply #4 on: October 02, 2018, 07:29:21 PM » Author: funkybulb
I would  use 30uf or 2x 15uf Amrad cap there are good American made cap and i save many of then from A/c units and they work well for hid lighting. you can order them from home depot or any places that sells caps.
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	Re: Westinghouse OV-25 Replacement Capacitors « Reply #5 on: October 03, 2018, 10:53:03 AM » Author: BT25
Update 2: I decided to go out and buy a fancy multi-meter. After setting it to the capacitance setting, setting the REL button, and after discharging the dual capacitors, the meter gave a reading of 30.23uF. So a 30uF capacitor is what I'm going to buy, with a 300 VAC minimum rating. Thanks Ria & FunkyBulb for your input.
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First known case of Westinghouse Lifeguard Disease!
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	Re: Westinghouse OV-25 Replacement Capacitors « Reply #6 on: October 03, 2018, 02:02:10 PM » Author: Rommie
Quote from: WestinghouseCeramalux on October 03, 2018, 10:53:03 AM Update 2: I decided to go out and buy a fancy multi-meter. After setting it to the capacitance setting, setting the REL button, and after discharging the dual capacitors, the meter gave a reading of 30.23uF. So a 30uF capacitor is what I'm going to buy, with a 300 VAC minimum rating. Thanks Ria & FunkyBulb for your input. No problem   Yes a meter that will test capacitors is useful, mine came into its own when I got a job lot of both new and used PFC capacitors from a contractor who was retiring. I was worried some of them might not be the right value, as they can deteriorate over time. Fortunately, they were all well within specification
« Last Edit: October 03, 2018, 02:03:46 PM by MissRiaElaine »		Logged

Ria (aka Rommie) in Aberdeen
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	Re: Westinghouse OV-25 Replacement Capacitors « Reply #7 on: October 03, 2018, 10:13:13 PM » Author: funkybulb
@ westinghousecermalux yes meter is a usefull tool to have  also the Amrad cap is rated for 440 volts  most motor run caps ive seen is either 370 or 440 working volts. i never had any problem using motor run caps on hid ballast.  as this cap mace so well i seldom find any failed ones a brand new Amrad  cap is usually bit over but with within tolernces.  But I am using a Turbo mini combonation capacitor by Amrad that give me any where from 2.5 uF to 15 uF on my White sided popular pack using it 5uF tested it was run at 5.5uF it gave me 790 mA leading current to run my 800 mA american tubes on British 125 watt 8 foot fluorescent fixture orginally it had a 7.2 uF i was drawing 1.25 amps it was over driving the ballast cause of 60 Hz it good to have a meter come in handy @MissRiaElaine in His case the westinghouse Gear is CWA Contant Watt Autotransformer ballast. Having a leading cap to regulate lamp current  here. On HPS gear and MH  can have PFC caps wired across the mains.  lot times  those crappy plastic case capicitor I just throw those away being PFC cap but in CWA appication it the metal can cap id would use.
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No LED gadgets, spins too slowly.  Gotta  love preheat and MV. let the lights keep my meter spinning.

	Re: Westinghouse OV-25 Replacement Capacitors « Reply #8 on: October 04, 2018, 10:02:42 AM » Author: Rommie
Quote from: funkybulb on October 03, 2018, 10:13:13 PM @MissRiaElaine in His case the westinghouse Gear is CWA Contant Watt Autotransformer ballast. Having a leading cap to regulate lamp current  here. On HPS gear and MH  can have PFC caps wired across the mains.  lot times  those crappy plastic case capicitor I just throw those away being PFC cap but in CWA appication it the metal can cap id would use. Don't throw them away, personally I believe PFC is important. Maybe not so much where you are, but I like things to be complete and if the manufacturers specify a PFC capacitor (and they all do) then I believe one should be included. I build displays as you may know, and if nothing else I like them to be complete. If you really don't want them, send them to me
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Ria (aka Rommie) in Aberdeen
Administrator, UK & European time zones. Any questions or problems, please feel free to get in touch

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