can this Carrier a/c operate in Europe with 380v 50hz

[Greek_engineer]

hello my friends is there any chance of having this machine operating in Greece with 380v , 3 phases, 50hz?

[install monkey]

voltage would need decreasing- 3 phase voltage regulator would be req as it states maximum voltage 254v, cant find a manual

[Greek_engineer]

this unit is placed in Greece but I cannot understand how this one can be operating under different type of voltage and hz.

[Gibbo]

Its for US market not for Europe

[install monkey]

check the compressor name plate and the fan nameplate to see if theyve been changed for european parts

[install monkey]

has it gone one of these on it ?? i dont know anything about these- courtesy of wikipedia
http://en.wikipedia.org/wiki/Power_factor

[Greek_engineer]

I totally agree with you ,it is for us market.I don't know how the owner of this house found this unit.

[bigor_2]

Don't look a gift horse in the mouth
Check nameplaces for motors and compressor as said install monkey

[Sparkletron]

Hmm, I'm an Aussie sparkie and splitty installer, I'm not a fridgie and definitely don't claim to know it all.

However, When you say 380V 50hz, is this figure phase to phase, or phase to neutral?
If it's phase to phase, I'd suggest the phase to neutral voltage would be right around 220v, yeah?
I'm totally unfamiliar with any overseas power supply figures, but 380v a phase seems like a lot!

Any way, 220v a phase would be right in the middle of the machines operating range, so I can't see to much of an issue there.
The frequency difference is a concern though, I would suggest that the compressor would probably overheat and may go into fault. But this thing seems to be working so I dunno? Is there a VSD of some sort anywhere?

A quick google found that Greece is 230v/400v 50hz so same as us in Australia.

Where did you get 380v from?

[bigor_2]

Sparkletron
Correct to speak of voltage/quantity of phases/frequency. For Greece it 380/3/50.

[Sparkletron]

Ok, no problems 380v it is then. From what I read on Wikipedia, etc, it said 240/400volts 50hz, but happy to be corrected!

Id say given the other thread the OP has going, he has found out the hard way that the wrong frequency will smoke the equipment pretty quick!

No idea how that AC got to Greece.

[bigor_2]

Correct to speak of voltage/quantity of phases/frequency. For Greece it 380/3/50. This unit has power supply is 230/3/60. It's good for USA but no good for Greece. Imho.

[xxargs]

If compressors are ON/OFF-type (not a inverter type, inverter type can handle situation more easy) and have 3 separate winding and six power pins on compressor - is possible try drive in Y-mode (not Delta) so each windings have 230 Volt (220 Volt if using 380 Volt phase to phase Voltage) - but still possible can be problem with 50 Hz on 60 Hz equipment.

If compressor build for international sales or/and using in country with both 50 and 60 Hz (aka japan) and stamped both for 50 and 60 Hz - No problem

But if build only for US-market or other pure 60 Hz country - compressor can have reduce amount of iron in motor to save manufacture cost and going from 60 Hz to 50Hz can make motor current to rush depend of magnetic saturation in motor if not take down Voltage 16% or to 190 Volt from 230 Volt. or at least motor going hotter than wanted depend of working near magnetic saturation region. - ie motor stamped for maximum 254 Volt in 60 Hz, you can only have maximum 211 Volt in 50 Hz world for same current in motor windings.

I living i Sweden and know companys import high advanced US-equipment specially period year 1980 - 2000 and differences between 50 and 60 Hz even if voltage in first look is in range, many time make big problem on heating motor, heating transformers and also make struggle on electronic depend of reservoir capacitors inside power supply is to small... and only way after try different solution include special and expensive transformer to adjust voltage down - ending up with very expensive motor-transformer to shift from 50 Hz to 60 Hz for make equipment fully working.

Mostly equipment imported from Asia have not problem with 50/60 Hz difference, is build for international using - but if equipment come from US or equipment only build for US-market from Asia, you need to check up this very carefully so you not making very short life and malfunction equipment or i worst case, starting fire... and if equipment have calender or timer function for day an night profiles - check if can shift between 50 or 60 Hz source ie. many of them using main-frequency as reference for clock circuits (i know multi million equipment struggling heavily and hanging after few Hours after every reboot and after loong and costly searching, find out system clock set for 60 HZ main frequency on delivering from US-manufacture, working 50 Hz live-frequency on custom place and worse - no way to change it in software!! and this thing took week to solve...)

[Greek_engineer]

the strange of this situation is:
1)after the a/c being connected to (phase to phase volt 380) 380/3/50 started the indoor unit to operating(I mean the indoor fans)
2) 30 seconds later the fuse 10 ampere before the indoor pcb transformer blew up and also did the internal transformer.

[install monkey]

fuse is only to protect from excessive current- higher voltage will give a lower current- but cause lots of damage- a 24v contactor coil fed with 240v will energise but burn out within seconds

[Greek_engineer]

I do not think that anyone here in Greece can find a suitable pcb transformer and even making this a/c to operate properly .

[bigor_2]

The intrigue is growing!
Does anyone has wiring diagram for Carrier 53QZ (40QZ+38QZ) system?

[install monkey]

http://www.mediafire.com/view/p5r94f...v9/53qz-1w.pdf
wiring dia
http://www.mediafire.com/view/scc81p...o/53qz-2pd.pdf
product data

The intrigue is growing!
Does anyone has wiring diagram for Carrier 53QZ (40QZ+38QZ) system?

[xxargs]

No good... - if compressor is internal star-coupled windings (at 127 Volt winding for 220 Volt feed ie Y-coupling) and marked for 220 Volt @ 60 Hz, you cannot using this equipment in Europa standard 380/400 Volt 50 Hz 3-phase without using 3-phase transformer from 380 Volt between phase to 220 Volt between phase - and going from 60 Hz to 50 Hz also require lower Voltage maximum 211 Volt if not want overload compressor with high motor current or possible burning motor...

This equipment is completly unfit for using in Europa without using extra matching 380/220 (190V) 3-phase transformer and shift from 60 to 50 Hz can be still a issue...


If try put in 380 Volt on this equipment i think several thing burn up (and seems already happen)

[Greek_engineer]

this machine is not for Europe..the owner should have known that and it comes as a result that the installer had himself cheated....