Re: The 50hz issue...

I'll answer first. Yes it will run and No it won't blow.

Re: The 50hz issue...

If both lines are in the bracket of 220 to 240 volts, yes it will run but........ the 50hz machine will have some sort of say 20% stress because the current alternates an additional 20% faster. And due to this increase of of current, it will shorten the life of the machine, it will burn somethings inside to stop the motor or machine from running. 😉

Re: The 50hz issue...

A bit of a tweak on your definitions.

Since you compared electricity to water, I would say Voltage in electricity is equivalent to Pressure (or head) in water. Its unit is usually expressed Volts . Electrical Current is equivalent to the Flow or how fast water/electricity flows. Its unit is usually expressed in Amperes, which is why, sometimes, Current is also referred to as Amperage.

There are two type of electrical current: Direct Current, current flowing in one direction only across a line (e.g. copper wire), and Alternating Current where current flows forward and backward.

The number of forward-backward movements in a a given time is referred to as Frequency, usually expressed in Herz. One Herz is equivalent to one cycle of forward and backward. Perhaps, Modulation is not the accurate term for this.

Many 50Hz surplus machines from Australia are sold in Manila (Ryobi, Ozito) and I own a few of them. In many cases, motor driven 50Hz machines will spin 20% faster than its rated performance in the Philippines because we are spinning the motor at a top rate of 60 cycles per second instead of 50.

This may be OK in some instances as some machines may have a tolerance or safety margin to "overspin" beyond its rated capacity. In my 50Hz machines, though, that have a speed control (e.g. sander), I do not run them at top speed just to make sure and, hopefully, make my machine last a bit longer.

Hope this helps.

Re: The 50hz issue...

A bit of a tweak on your definitions.

Since you compared electricity to water, I would say Voltage in electricity is equivalent to Pressure (or head) in water. Its unit is usually expressed Volts . Electrical Current is equivalent to the Flow or how fast water/electricity flows. Its unit is usually expressed in Amperes, which is why, sometimes, Current is also referred to as Amperage.

There are two type of electrical current: Direct Current, current flowing in one direction only across a line (e.g. copper wire), and Alternating Current where current flows forward and backward.

The number of forward-backward movements in a a given time is referred to as Frequency, usually expressed in Herz. One Herz is equivalent to one cycle of forward and backward. Perhaps, Modulation is not the accurate term for this.

Many 50Hz surplus machines from Australia are sold in Manila (Ryobi, Ozito) and I own a few of them. In many cases, motor driven 50Hz machines will spin 20% faster than its rated performance in the Philippines because we are spinning the motor at a top rate of 60 cycles per second instead of 50.

This may be OK in some instances as some machines may have a tolerance or safety margin to "overspin" beyond its rated capacity. In my 50Hz machines, though, that have a speed control (e.g. sander), I do not run them at top speed just to make sure and, hopefully, make my machine last a bit longer.

Hope this helps.

thanks for the tweak, i purposely did'nt used the correct terms to level with our readers. Your right with AC and DC but for simplicity we focus on standard powerline which is AC and how it affects 50hz machine. Yes i agree to the 20% increase in cycle on a 50hz machine. But here's what is confusing :

1) Machines with rated 50hz should be in 240v (australia and N.Z. line standard) range to output their actual potential power - a difference of 20v which is about 8% drop of its potential power. Correct me if i am wrong but Voltage is more of a factor compared to amps and frequency. This voltage drop, theoretically should be keeping the machine underpowered and hence cooler.

2) While 50hz seemed questionable with magnetic motors it does not completely apply with non-motors, again theoretically, why? e.g. transformers, bulbs,heat coils,etc because they behave differently. As for example with transformers for welding machines (which do not have spinning parts) which is only affected more on Amps and Voltage and very little with frequency. The higher the frequency the finer the weld as with the case with AC aluminum welding (120HZ), much like bulbs that shines better (less flicker) without heating up. Remember the voltage and amps stays the same, but if you try to lower the voltage then it does the reverse. Again theoretically speaking 😉

3)And lastly, to keep us all thinking i will share you a little secret from my factory friends in china - that "ALL" china made machines for eastern market are actually rated at "220-240V 50/60Hz" standard. You ask me why?? they simply answer - "cheaper to build something that can be used everywhere". Good point eh? So what you see in the labels for 50hz machines are actually an omission of the 60Hz label as per standard of the country when in fact it can handle both.

So, why is the overheating - is it just the 50hz? what about other factors like condition of the machine,how it was used or simply human error?? Or are we just quick to blame it on the 50Hz? What ya think folks??? Isep-isep 😎

Re: The 50hz issue...

Our chinese friends seems to be telling the truth..

Re: The 50hz issue...

@ JanMike

I was pleasantly surprised with that "little secret",. I usually follows things by the book, so I'm not very keen on procuring 50Hz machines until now,. I only knew that 50Hz motors run faster on 60Hz sources and that it accelerates wear on the motor wire insulation,.. the #1 reason why I stay away from Ryobi and Ozito powertools is that they're labeled as 50Hz units.

Anyone else can give credence to JanMike's statement?

Re: The 50hz issue...

Well the first picture is for a li-ion charger so i guess the frequency has no effect on the motor of the item being powered by the li-ion battery.
the 2nd picture is for a sander? im not sure, but it says 50hz.

So i guess this will always be a caveat emptor deal.

Re: The 50hz issue...

Doh!!,. How could I miss that one,. yeah,. you're right,. may pagkakaiba yung epekto ng frequency sa motor at electronics, and batteries delivers DC current so walang frequency.. I assumed that both photos where from the motor unit,. isip-isip din nga naman..

But still,. that statement on ODMs using a 50/60Hz design to simplify manufacturing and just letting the other firms to label frequency support as either 50Hz or 60Hz makes alot of sense.

i bought a ryobi drill and angle grinder.. mga 8 years ago... madalas naman gamitin for maintenance... ok parin naman... although... yung ryobi drill.. pansin ko medyo paling ang ikot ng bit since bnew and yung angle grinder nasira na yung trigger on switch.. hehe
both 50hz...
may nagsabi din sakin noon mas mabilis masira 50hz items.. so i only buy 50hz items pag mura talaga...
so it turns out pala.. same same lang no?

Well for those who are inclined in buying these surplus electric power tools from AUSTRALIA, specially with the rated 50hz motors, just remember if you want your power tools to last, don't force or over use them at top speed to prevent the motor from over heating and eventually may bogged down. Also do remember that these surplus power tools have no known service centers locally and replacement parts, well they may be very hard or difficult to find. 🙁

I know these power tools are cheap, very cheap but keep in mind that "you get what you pay for".
Just sharing my thoughts. 🙂

CHEERS and best of luck !!

If you will buy an Australian power tool, magpapalit ka pa nga ng plug. I am working here in Oz.

Actually there is no need to replace the existing plug, you just need to buy a universal plug sold at mall hardware stores or home depots or even DIY Shops.