ElevatorBackup power
Elevator Backup: UPS, ARD and Rescue Circuit
How elevator backup works: UPS vs ARD rescue device vs generator, how to size the rescue circuit, and what to confirm with the lift contractor.
Insights
Technical notes for project buyers.
Sizing methods, topology comparisons, battery runtime, and grid-quality notes written for the people who sign the load list.
- Technical articles
- 15
- Reference guides
- 4
- Words per article
- 1,000+
- Online transfer
- 0 ms
Reference guides
The fundamentals before the articles.
These reference pages explain the names, mechanisms, and sizing rules that the articles build on. They are maintained as part of the product documentation rather than as dated articles.
Browse by question
Start from the decision you are trying to make.
Four kinds of question bring people here: how big, which type, what protects it, and what the local grid does to all three. Each group below is the reading order for one of them.
How big does it need to be?
7Load lists, starting current and runtime, for homes, offices and specific equipment.
- How to Size a UPS for an Unstable Grid
- SOHO Office UPS: What to Protect and Size
- UPS for CCTV Rooms: Planning 4–8 Hours Runtime
- UPS for Cold Storage: Sizing Compressor Starts
- Water Pump Backup: Why kVA Alone Is Not Enough
- Elevator Backup: UPS, ARD and Rescue Circuit
- Gas Station Power: AVR, UPS and Backup
Which type do I need?
5The comparisons that decide topology, regulator mechanism and battery chemistry.
What protects it?
2Surge, overload and the industrial loads that break a commercial UPS.
What does the local grid do to it?
1Grid conditions by market, and why the nominal voltage is the wrong basis for sizing.
Technical articles
Sizing, topology and battery notes.
Gas stationAVR
Gas Station Power: AVR, UPS and Backup
Protecting a fuel station: the load list, AVR vs UPS, hazardous-area rules for equipment placement, generator coordination and a backup configuration.
Cold storageMotor loads
UPS for Cold Storage: Sizing Compressor Starts
Protecting a cold room: what the UPS carries, how compressor starting current changes sizing, and battery behaviour at low and high temperature.
Surge protectionSPD
Power Surge Protection: SPD Types and Placement
How surge protective devices work, the difference between Type 1, 2 and 3 SPDs, where they sit in the electrical path and how to pair them with a UPS.
SOHOOffice
SOHO Office UPS: What to Protect and Size
UPS guide for small offices, clinics and studios: the load list, 5-minute vs 1-hour runtime, line-interactive vs online, and loads it cannot carry.
Water pumpMotor loads
Water Pump Backup: Why kVA Alone Is Not Enough
Sizing backup power for water pumps: starting current, DOL vs soft starter and VFD, three-phase loads, runtime, and when a UPS is the wrong tool.
Voltage stabilizerAVR
Voltage Regulator vs Stabilizer vs AVR
Voltage regulator, stabilizer and AVR often mean the same box. The difference between the names, the mechanisms, and how to choose for a weak grid.
UPS basicsTopology
What Is an Uninterruptible Power Supply (UPS)?
A plain-language guide to UPS systems: what a UPS does, how double-conversion, line-interactive and standby designs work, and how to size one.
UPS sizingBattery runtime
How to Size a UPS for an Unstable Grid
A practical sizing method for UPS systems: kW to kVA, design margin, motor starting, battery runtime, and the site conditions that change the answer.
UPS topologyOnline UPS
Online vs Line-Interactive UPS: Which to Choose?
Online double-conversion vs line-interactive UPS compared: transfer time, waveform, input range, efficiency, battery use and which loads justify the price.
Voltage stabilizerAVR
Servo vs Contact Stabilizer: Which AVR Fits?
Servo vs contact-type voltage stabilizers compared: input range, output accuracy, response time, maintenance and the site readings that decide.
Battery runtimeVRLA
UPS Battery Runtime: VRLA vs LiFePO4
How to calculate UPS battery runtime, why a simple Ah division overestimates the bank, and when LiFePO4 is worth the higher capital cost.
Industrial UPSThree-phase
Three-Phase UPS: Crest Factor and Overload
Why industrial loads need more than a commercial UPS: crest factor, motor starting, input range, overload curves, IP protection, and commissioning checks.
PhilippinesBrownout
Philippines Brownouts: Why a UPS Is Not Enough
How brownouts in the Philippines differ from blackouts, why a UPS drains during a long sag, and how to combine an AVR and a UPS on 220 V / 60 Hz sites.
CCTVSecurity
UPS for CCTV Rooms: Planning 4–8 Hours Runtime
Security-room UPS sizing: NVR, PoE camera and access-control loads, battery runtime, rack layout, remote alerts and the test schedule that proves runtime.
Reference
How to use these guides.
How to use these guides
| If you are… | Start with | Outcome |
|---|---|---|
| Sizing a UPS | kW to kVA and runtime | Capacity range and battery target |
| Choosing topology | Online vs line-interactive | 0 ms or 4–6 ms decision |
| Stabilizing voltage | Servo vs contact AVR | Input window and accuracy |
| Planning battery | VRLA vs LiFePO4 | Chemistry and bank size |
| Industrial project | Crest factor and overload | Frame and starting method |
Project inputs to confirm
| Item | What to confirm | Why it matters |
|---|---|---|
| Load | Running kW, largest motor, load step | Sets kVA, overload and topology |
| Runtime | Minutes, generator availability, battery room | Sets battery bank and charger |
| Supply | Voltage, frequency, phase, input current | Sets model, breaker and cable |
| Site | Country, altitude, ambient temperature, dust | Sets derating, IP and documents |
| Battery | VRLA, LiFePO4, footprint, weight limit | Sets chemistry and room layout |
| Documentation | Conformity route, test report, language | Sets document package and lead time |
Next step
Send the load list. We will return the configuration.
Tell us the kW, the backup time, the phase, and the site country. You will get a capacity recommendation, a battery configuration, and the model sheet.
- Capacity and topology recommendation
- Battery bank and runtime estimate
- Model sheet and commercial offer
Request a configuration and quotation
Send the load list, backup time, and site conditions. We will return a capacity recommendation, battery configuration, and commercial offer.