APC BY SCHNEIDER
Frequently asked questions
Common questions about APC BY SCHNEIDER from 3G Electric.
What is the difference between a replacement battery and an external battery pack for APC UPS systems?
A replacement battery, such as the RBC17 (12 V DC, 9 Ah), is a direct substitute for the internal battery in a compatible UPS model like the BX950MI-AZ. It restores the original runtime capacity. An external battery pack, such as the SMX120RMBP2U (120 V DC) or BR24BPG (24 V DC, 18 Ah), connects to the UPS via an attached cable to add additional battery capacity and extend runtime beyond the internal battery. External packs are used when longer backup time is needed for critical loads. Both types require matching the UPS model and voltage specifications.
Which APC UPS models are compatible with the RBC17 replacement battery?
The RBC17 replacement battery is specified for use with the APC BX950MI-AZ model. It is a sealed lead-acid battery rated 12 V DC, 9 Ah, with a detachable cable connection. Compatibility should be verified against the UPS model number and battery voltage before ordering. Using a battery with incorrect voltage or capacity can damage the UPS or reduce backup performance. For other UPS models, refer to the manufacturer's battery replacement guide or contact 3G Electric with the UPS model number to confirm the correct replacement part.
What input and output voltages are available in APC standby UPS systems from 3G Electric?
APC standby UPS systems in the 3G Electric catalog include models with 120 V input and 120 V output, such as the BK500BLK (500 VA) and BE650G1 (650 VA). A higher-capacity model, the SYPM4KP, is rated 4,000 VA with 200–208 V input and uses online double-conversion technology. Input and output voltage must match the local electrical supply and the connected equipment requirements. For three-phase or other voltage configurations, consult the full APC product line or specify the required voltage when requesting a quote.
How do I choose between a 500 VA and a 4,000 VA APC UPS system?
The choice depends on the total load in volt-amperes (VA) and the required runtime. A 500 VA standby UPS like the BK500BLK is typically used for desktop computers, network equipment, or small peripherals. A 4,000 VA online double-conversion UPS like the SYPM4KP is suited for server racks, industrial control systems, or larger equipment requiring continuous power conditioning. Calculate the sum of connected equipment VA ratings, add a margin for future expansion, and select a UPS rating above that total. Runtime can be extended with external battery packs where supported.
What is the difference between standby and online double-conversion APC UPS topologies?
Standby UPS systems, such as the BK500BLK and BE650G1, normally pass utility power to the load and switch to battery backup when input voltage drops or fails. They also provide surge protection. Online double-conversion UPS systems, such as the SYPM4KP, continuously convert incoming AC power to DC and back to AC, isolating the load from voltage fluctuations, frequency variations, and outages. Online double-conversion provides a higher level of power conditioning and is typically used for sensitive or critical equipment. Selection depends on the tolerance of the connected load to power disturbances.
Can APC external battery packs be used to extend runtime on any UPS model?
No. External battery packs are designed for specific UPS models and voltage ratings. For example, the SMX120RMBP2U (120 V DC) is compatible with the AP9625 and AR201, while the BR24BPG (24 V DC, 18 Ah) is compatible with the BR1500G. The SMX48RMBP2U (48 V DC) is compatible with the APCRBC115 and SU032A. Connecting an incompatible battery pack can cause damage or unsafe operation. Always verify the UPS model number and the battery pack's specified compatibility before ordering. 3G Electric can provide compatibility data for the APC battery packs in stock.
