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Smart-UPS 750 XL AVR Trim Fail

APC UPS Data Center & Enterprise Solutions Forum

Schneider Electric support forum for our Data Center and Business Power UPS, UPS Accessories, Software, Services, and associated commercial products designed to share knowledge, installation, and configuration.

Solved
mauro657_apc
Crewman
Crewman
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1
254

Smart-UPS 750 XL AVR Trim Fail

This was originally posted on APC forums on 11/16/2010


Hi,
I have AVR Trim function always Active, but line voltage is always OK.

Powerchute values:
Line Voltage 275,0 VAC
Output Voltage 243,3 VAC

Measured values:
Measured Line Voltage = 232 VAC
Measured Output Line Voltage = 205 VAC

High Transfer Voltage is set to 265 VAC
Output Voltage is set to 240 VAC

I think AVR circuit can't read true value.

Is there any trimmer resistor on the pcb to fix it?
or
can I set High Transfer Voltage value > 265VAC to align read vs true Voltage values?
or
can I disable completely AVR function?

Thanks

Message was edited by: mauro657

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Accepted Solutions
mauro657_apc
Crewman
Crewman
0 Likes
0
254

Re: Smart-UPS 750 XL AVR Trim Fail

This was originally posted on APC forums on 11/18/2010


clarkson wrote:
Is there a setting allowing you to set the high transfer voltage above 265?
Not in powerchute interface. Peraphs in some ini file or in registry or by some servicemode menu on powerchute or direct on UPS buttons?

Thanks

See Answer In Context

1 Reply 1
mauro657_apc
Crewman
Crewman
0 Likes
0
255

Re: Smart-UPS 750 XL AVR Trim Fail

This was originally posted on APC forums on 11/18/2010


clarkson wrote:
Is there a setting allowing you to set the high transfer voltage above 265?
Not in powerchute interface. Peraphs in some ini file or in registry or by some servicemode menu on powerchute or direct on UPS buttons?

Thanks