Using a UPS with a BIT

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Rod_S

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Using a UPS with a BIT
« on: 6 Jun 2025, 03:17 am »
I am curious if anyone using a BIT/Torus has a UPS connected in front to provide battery backup in case of a power outage? For example if one has a BIT15, use a 15amp rated (or higher) UPS connected to the wall and then connect the BIT to the UPS. Similar for a BIT20, use a 20amp UPS connected to the wall and the BIT to the UPS. I suppose, there should be no reason why you couldn't do the reverse, have the BIT plugged into the wall and the UPS connected to the BIT.

Besides battery backup and the protection that provides for source components, particularly digital units, what, if any downside might there be in this scenario? I know some UPS units advise against connecting a power strip to the UPS and to connect any components directly to the UPS thus the same would apply for connecting power conditions like the BIT's however I'm unsure why I see advice from UPS manufacturers.

Thanks

newzooreview

Re: Using a UPS with a BIT
« Reply #1 on: 7 Jun 2025, 07:18 pm »
I don't own a BIT, but I think the issues are not specific to the BIT. In general, if protection from spikes due to power issues are the concern (thunderstorms, unreliable electric utility, etc.) then a whole-house surge protector makes more sense than introducing the potential problems from a UPS sitting directly behind the BIT.

I own a power conditioner similar to the BIT15, and during brief power glitches that affect my ceiling lights the stereo does not hiccup. If the power goes off entirely then I shut off the stereo to mitigate the potential for inrush current to cause an issue.

A UPS might buy more time for me to shut off the system when the power to the house gets iffy, but rather than deal with the inherent issues from a UPS directly behind the power conditioner, I would look to get a whole house system.

Below is an AI summary of some of the considerations (as something to seed conversation).

"Downsides and Risks:

Compatibility Issues: Simulated sine wave UPS units (common in budget models) may cause noise, heat, or performance issues with the BIT or sensitive gear; a pure sine wave UPS is essential.

Interference: In the BIT → UPS setup, the BIT’s filtering might mask power fluctuations, hindering the UPS’s response to outages.

Increased Complexity and Cost: Requires a high-capacity, pure sine wave UPS (e.g., $200-$1500) plus the BIT, with added maintenance like battery replacement every 3-5 years.

Overloading Risk: Connecting multiple high-power devices to the BIT and then the UPS could exceed the UPS’s capacity, especially on battery power.

Warranty and Liability Concerns: UPS manufacturers often warn against power conditioners, potentially voiding warranties or equipment protection policies; BIT warranties may also be affected.

Diminished Audio Performance: Some UPS units may introduce noise or degrade power quality on battery mode, counteracting the BIT’s benefits.

Battery Runtime Limitations: UPS batteries are for short-term backup (minutes to hours), not extended outages, requiring additional solutions like generators.

Why UPS Manufacturers Advise Against Power Strips/Conditioners:

Load Instability: Variable or inductive loads from conditioners (e.g., BIT transformers) can stress the UPS inverter, causing instability or failure.

Surge Suppression Conflicts: Interactions between UPS and conditioner surge circuits may reduce effectiveness or cause malfunctions.

Safety Concerns: Improper setups risk electrical hazards or overloading, prompting manufacturers to limit liability by discouraging such configurations.

Recommendations and Mitigations:

Choose a Pure Sine Wave UPS: Ensures compatibility with the BIT and sensitive equipment (e.g., APC BR1500MS2 for BIT15, APC SRT2200XLA for BIT20).

Calculate Load and Runtime: Ensure the UPS can handle the BIT and connected devices’ total wattage with 20-30% headroom, providing sufficient backup time (e.g., 5-15 minutes).

Connect Critical Components Only: Limit UPS use to essential digital gear via the BIT to optimize runtime and reduce load.
Verify Warranty and Support: Confirm with BIT/Torus and UPS manufacturers that the setup is supported and won’t void warranties or protection policies.

Test the Setup: Simulate an outage to check for proper operation, ensuring no noise, overheating, or errors occur.

Consider Alternatives: If risks outweigh benefits, explore options like solar backups or audio-specific UPS units (e.g., Furman F1000-UPS).

Maintain Ventilation: Place both devices in a well-ventilated area to prevent heat buildup and ensure longevity."

Rod_S

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Re: Using a UPS with a BIT
« Reply #2 on: Yesterday at 02:27 am »
Thanks. That's a lot of info and considerations.