A long-run ITA2 UPS does not deliver a runtime figure by itself: the result depends on the external battery bank, load in watts, discharge limits and installation conditions. By the end, you will know which battery and electrical details to request, how to compare runtime claims, and how to specify acceptance testing before purchase.
Key takeaways
- Long-run ITA2 systems use external battery banks sized for required backup minutes.
- Calculate runtime from load watts, battery voltage, capacity, efficiency and aging allowance.
- Confirm whether 2 kVA LB models deliver unity power factor and accept 16A input or output.
- Require battery protection, installation drawings, commissioning tests and a documented runtime result.
What “long run” means for an ITA2 UPS battery setup
“Long run” means the UPS chassis does not contain the complete backup battery. It uses an external battery bank or cabinet sized for the required minutes, so a “100 Ah battery” alone does not tell you the usable AC runtime.
1. Confirm the exact ITA2 SKU, rated kVA and kW, input and output voltage, phase, frequency, waveform, bypass arrangement and allowable load. A 2 kVA model is not automatically suitable for a 2 kW load or equipment with high starting current.
2. Ask for the required DC battery voltage and the number of 12 V blocks in one string. Do not substitute a different block count: the wrong DC voltage can damage the charger, inverter or battery bank.
3. Record the battery chemistry, manufacturer, Ah rating, quantity, number of parallel strings, connector type and cable length. Confirm that the battery cabinet or rack, terminals and external connector match the exact UPS configuration.
4. Confirm charger current, battery end voltage, DC isolator or fuse rating, cable cross-section and overcurrent protection. An ordinary AC MCB does not replace correctly rated DC battery protection.
5. Require runtime figures in minutes at stated watt loads, including 25%, 50%, 75% and 100%, with battery age, ambient temperature and end-voltage assumptions. Nominal energy equals volts multiplied by Ah; inverter losses, discharge rate and aging reduce usable output.
For ita2 long run ups in mumbai, the quotation should identify every item above. A long run online ups battery is a system, not a loose battery purchase.
How to calculate and compare ITA2 runtime at real loads
Estimate runtime from load watts and the UPS manufacturer’s discharge curve, not from the battery’s Ah label. Convert each load point into watts: 25%, 50%, 75% and 100% of the intended UPS kW rating, then compare minutes using the same battery bank, cutoff voltage and temperature assumption.
| Load point | Test load | What the runtime estimate must show |
|---|---|---|
| 25% | 0.25 × intended kW × 1,000 W | Minutes at the light-load discharge rate |
| 50% | 0.50 × intended kW × 1,000 W | Minutes using the same battery configuration |
| 75% | 0.75 × intended kW × 1,000 W | Minutes before low-voltage cutoff |
| 100% | 1.00 × intended kW × 1,000 W | Minutes at the contracted full load |
Nominal battery energy is battery-bank voltage multiplied by Ah and the number of parallel strings. That figure is not usable AC energy: inverter losses, discharge-rate effects, low-voltage cutoff, temperature and battery age reduce the delivered runtime. A 100 Ah battery therefore cannot be treated as 100 Ah of output energy.
Ask for battery make, voltage, Ah rating, quantity, string arrangement, end voltage, ambient temperature and stated load watts in every quotation. Compare estimates only when those inputs match. The same rule applies when comparing a long run online UPS battery configuration with an ITA2 long run UPS in Mumbai.
Adding parallel strings increases autonomy and recharge time. Confirm the charger’s permitted Ah range, DC protection and cable rating before treating extra batteries as a valid runtime upgrade.
The kVA, kW and electrical specifications your load requires
A 1 kVA unity power factor UPS is rated for 1 kW of real-power output, but that does not authorise continuous operation at 1 kW under every temperature, input condition or battery state. Compare the ITA2 model’s continuous kVA and kW ratings with measured load watts, then keep capacity for overloads and future equipment.
Request a model-specific electrical schedule containing:
- Input voltage range, frequency range, maximum input current and required upstream protection.
- Output voltage, frequency, continuous kVA and kW rating, permitted output power factor and inverter waveform.
- Output voltage and frequency tolerance, total harmonic distortion and inverter transfer-time specification. A double-conversion online UPS normally supplies the load through its rectifier, DC bus and inverter; “changeover time” alone is not enough.
- Static-bypass voltage and frequency limits, bypass capacity, transfer conditions and interruption behaviour. Bypass power is not conditioned inverter power, so a transfer exposes the load to the bypass source.
- Crest-factor rating, overload percentage and permitted duration. Match these values to the actual load inventory, not only its steady-state wattage.
- High-inrush equipment, including laser printers, compressors, pumps and some switched-mode power supplies, identified separately for approval.
- External-battery DC voltage and the compatible battery configuration, because an unsuitable string can prevent startup or damage the UPS.
Reject a selection that passes a watt calculation but fails the crest-factor, overload or bypass checks. Test the installed system at the contracted load, including mains failure, bypass transfer and overload response.
What the 2 kVA LB and 2 kVA LB 16A listings should clarify
The labels do not prove that “LB 16A” means a higher-capacity UPS. It may identify the input current, plug or terminal arrangement, a regional variant, or a different bypass and protection configuration. Ask for the exact Vertiv Liebert ITA2 SKU and compare the manufacturer’s electrical data, not a distributor’s shortened title.
| Listing | What to verify | Why it matters |
|---|---|---|
| 2 kVA LB | Input voltage, phase, frequency, maximum input current, plug or terminal type, and upstream breaker rating | A 16A supply requirement cannot be inferred from “2 kVA” |
| 2 kVA LB 16A | Whether 16A describes input current, an IEC connector, a hardwired connection, or an installation-option code | A connector change can require different cabling, socket hardware and isolation |
| Both listings | Output voltage and frequency, kVA and kW rating, bypass path, overload limits, waveform, external-battery DC voltage and charger current | Two units with the same kVA label can have incompatible site wiring or battery systems |
| Regional variant | 230 V single-phase input/output, 50 Hz operation, plug standard, language of alarms and compliance documents | A unit intended for another region may not match Mumbai wiring or service arrangements |
A quotation from a double conversion online UPS distributor in Mumbai for an ITA2 long run installation should state the exact model, kVA/kW, input and output limits, external-battery voltage, 12 V block quantity, battery Ah, cabinet or rack, DC fuse or isolator, and bypass arrangement.
Ask the seller to mark every difference between the two listings in writing.
How to specify, install and test an ITA2 long-run system in Mumbai
Approve the ITA2 only after the quotation names the complete UPS, battery bank, protection, runtime assumptions and acceptance tests. The phrase “double conversion online UPS distributor in Mumbai ITA2 long run” is not a configuration schedule.
1. Require the schedule to state the UPS model, kVA and kW rating, input and output voltage, external-battery voltage, battery chemistry, make, Ah rating, quantity, compatible string configuration, connector type, cable size, battery cabinet or rack, DC isolator, fuse or breaker, bypass arrangement and earthing points.
2. Demand runtime in minutes at stated loads in watts, not only at 25%, 50%, 75% and 100% VA. The quotation must identify the battery configuration, end voltage, discharge cutoff and ambient-temperature assumption. For Mumbai, measure temperature beside the battery terminals; a cool UPS-room thermostat does not describe a hot cabinet.
3. Have the installer provide a DC protection design based on fault current and UPS DC current. Correctly rated DC isolation and overcurrent protection, ventilation, access clearance and segregation belong in the installation; an ordinary AC MCB is not a substitute.
4. Commission the system at the contracted load: record battery polarity and voltage, conduct a mains-failure test, measure autonomy, verify return-to-mains and recharge behaviour, test bypass transfer and overload response, and confirm alarms locally and through monitoring. A no-load power-on proves almost nothing.
If Originate Power Solutions is quoting an ita2 long run ups in mumbai, ask it to sign these readings into the handover report before payment.
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Frequently asked questions
What does long run mean in an ITA2 UPS setup?
Long run means the UPS uses an external battery bank or cabinet instead of relying on a complete internal battery pack. The bank is sized for the required backup duration.
How do you calculate ITA2 UPS runtime at a real load?
Start with the measured load in watts, then compare the battery bank’s nominal watt-hours with UPS efficiency, discharge performance, power factor and an allowance for battery aging. Confirm the result with a commissioning test at the actual load.
What should a 2 kVA LB or 2 kVA LB 16A listing clarify?
Ask for the model datasheet showing kW output, input and output voltage, current rating, battery voltage range, external-battery compatibility, recharge current, bypass details and the meaning of 16A.
What should you specify before installing an ITA2 long-run UPS in Mumbai?
Specify the measured load, required runtime, site voltage, earthing, temperature, battery location, cable route, ventilation, protection devices and service access. Test transfer, alarms, battery charging and runtime after installation.
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