In short. A 62.5 kVA generator is a three-phase set rated 50 kW at 0.8 power factor, delivering about 87 A per phase at 415 V. In Hyderabad it typically carries the common loads of a 30–60 flat apartment block with two lifts, a hospital or nursing-home wing, a small factory, or a branch office or showroom with central air conditioning. Reddy Generators supplies new 62.5 kVA sets through supply tie-ups with all major makes, all meeting CPCB IV+, and also rents, sells used and refurbished sets, and services them. Because the price depends on the make, the panel and the scope, and changes from day to day, it is quoted on request.
Who this page is for: Apartment association committees, hospital and nursing-home administrators, factory owners, branch-office facility teams and contractors in and around Hyderabad who are considering a 62.5 kVA diesel generator to buy, rent or replace, and who want the engineering numbers for this one size before they ask for a price.
Key facts
- Output: 62.5 kVA = 50 kW at 0.8 power factor. Plan continuous running load at about 40 kW (80 %) so the set has room for motor starts and summer heat.
- Full-load current: 62.5 × 1.391 ≈ 87 A per phase at 415 V three-phase. Each phase can carry at most about 20.8 kVA (16.7 kW) of single-phase load.
- Phase: three-phase, four-wire only. 62.5 kVA is not normally built as a single-phase set; a single-phase building at this load needs a different arrangement (see below).
- Diesel (approximate): about 6.5–7.3 L/h at 50 % load and 9.8–10.9 L/h at 75 % load, on a basis of 0.26–0.29 L per kWh. The make’s data sheet decides.
- Noise: new sets come in a CPCB IV+ acoustic canopy, limited to 75 dB(A) at 1 m.
- Protection and cable: a 100 A four-pole MCCB, a 100 A four-pole changeover and, for runs up to about 74 m, 35 sq mm aluminium XLPE armoured cable (see the breaker, changeover and cable chart).
- Size and weight (approximate, make decides): about 3.0–3.6 m long (10–12 ft), 1.1–1.4 m wide and 1.7–2.0 m high; roughly 1.3–2 tonnes in a silent canopy before fuel.
- Typical uses: apartment common loads with lifts, hospital wings and diagnostic floors, light manufacturing, branch offices, banquet halls, and rental for sites whose own set is under overhaul.
Get price
Generator prices change every day, so we do not print them on the website. Tell us whether you want to buy new, buy used or rent a 62.5 kVA set, single or three phase, and where the site is. We will send the price.
- New set: the price excludes GST, transport and installation.
- Rental: the rate covers the generator only. Transport is charged at actuals and is in the customer’s scope. Cable and an operator are extra charges if you need them.
- Used or refurbished: priced set by set on make, running hours and condition. Every set is load-bank tested before sale; refurbished sets carry a six-month warranty (rubber and plastic parts, consumables, fuel damage and overload excluded); used sets sold as-is come with an inspection report.
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The general method for the band, including voltage-dip theory, is in our 50–125 kVA guide; every number here is for 62.5 kVA only.
What a 62.5 kVA generator can run
“62.5 kVA kitna load le sakta hai” (how much load can it take?) has two answers: about 40 kW of continuous running load (80 % of 50 kW), and a starting limit set by the largest motor that starts in one step. Running figures below are approximate and allow normal diversity.
| Site and load set | Running load (approx.) | Hardest start | Fits 62.5 kVA? |
|---|---|---|---|
| 40-flat block, common loads only: two 8-passenger lifts with drives, two 5 HP borewells, transfer pump, STP blower, corridor and campus lighting, CCTV and gate | 30–34 kW | 5 HP borewell, direct-on-line (about 33 kVA for a second) | Yes, with a sensible restart sequence |
| Same block plus backup of two lights and two fans in every flat (about 0.2–0.25 kW per flat) | 38–44 kW | As above | Only if flat backup is limited and borewells are interlocked; see the illustrative case |
| 60-flat block with full flat backup including ACs | Well over 50 kW | Many AC compressors restarting | No; consider 100–125 kVA or restrict flat backup |
| Hospital wing or nursing-home floor: wards, 10 inverter 1.5-ton ACs, ICU equipment, OT lighting, one bed lift, nurse-call and IT | 32–38 kW | Bed lift with drive | Yes; imaging equipment (CT, MRI, large X-ray) needs its own study |
| Small factory: one CNC machine with spindle drive, two lathes (3 HP each), 10 HP air compressor, lighting and office | 26–32 kW | 10 HP compressor | Yes if the compressor is star-delta or soft-started; marginal direct-on-line with the machines running |
| Restaurant or banquet hall: 12 split ACs, kitchen exhaust, two cold rooms, dishwasher, lighting | 36–42 kW | Fixed-speed AC compressors restarting together | Yes with staggered AC restart; tight in May |
| Office floor or branch: workstations on a 30 kVA UPS, ACs, lighting, servers | 30–38 kW | Largest AC compressor | Yes; keep UPS load under about half the set rating |
How many ACs can a 62.5 kVA generator run?
Honestly: with nothing else on it, roughly 20–24 inverter 1.5-ton split ACs (7–8 per phase, at about 1.3–1.6 kW each). With fixed-speed (non-inverter) 1.5-ton units, plan on about 15–18. With fixed-speed units the limit is the restart: each compressor briefly draws several times its running current, and after changeover every compressor on a phase restarts at once. Fit restart timers or let the AMF panel bring loads on in stages. In real buildings, where lights, pumps and computers share the set, 10–15 ACs is the practical figure.
Largest motor it can start
As a rule of thumb, a 62.5 kVA set starts a 10 HP motor direct-on-line comfortably. Basis: a 10 HP (7.5 kW) motor draws about 10 kVA running and about six times that, 60 kVA, at a direct-on-line start, roughly equal to the set’s rating, which gives a voltage dip in the region of 10–15 %. A 15 HP direct-on-line start (about 86 kVA) is possible only when little else is starting at the same moment. With star-delta starting, a 20 HP motor draws about 39 kVA at start, so star-delta or a soft starter takes the limit to about 20–25 HP. Lifts with drives start near rated current and are the easiest motor load here.
Diesel consumption per hour
At this rating, a turbocharged engine uses roughly 0.26–0.29 litres per kWh between half and full load, which is about 3.4–3.8 kWh per litre (the “average” or “mileage” buyers ask about). At light load it worsens. The make’s data sheet decides.
| Load | Electrical output | Diesel (approx. L/h) | Runtime on 135 L usable (approx.) |
|---|---|---|---|
| 25 % | 12.5 kW | 4.3–5.0 | about 29 h |
| 50 % | 25 kW | 6.5–7.3 | about 20 h |
| 75 % | 37.5 kW | 9.8–10.9 | about 13 h |
| 100 % | 50 kW | 13.0–14.5 | about 10 h |
Fuel tank capacity. Base tanks on 62.5 kVA canopy sets are commonly in the region of 100–200 litres, depending on the make. The runtime column assumes a 150-litre tank with about 135 litres usable, keeping a reserve so the engine never draws sediment. Sets on daily long-hour duty often add an external tank. Running for weeks at 25 % or less also brings wet stacking, explained in our light-load guide.
Monthly diesel worksheet
Multiply hours by litres per hour, then the total by the current diesel rate. The example uses the apartment case below.
| Item | Example | Your site |
|---|---|---|
| Outage hours per month (use a summer month) | 40 h | |
| Average load during outages, kW | 28 kW (56 %) | |
| Litres per hour at that load (from the table) | 7.6 L/h | |
| Outage diesel = hours × L/h | 40 × 7.6 ≈ 302 L | |
| Test runs: 4 × 30 min at light load, about 4.5 L/h | 2 × 4.5 = 9 L | |
| Total litres per month | about 311 L | |
| Refills of the base tank (total ÷ usable litres) | 311 ÷ 135 ≈ 2.3 |
Single phase or three phase at 62.5 kVA
62.5 kVA sets are three-phase, four-wire, 415/240 V only. The questions are about single-phase loads on them.
- Per-phase limit. Each phase can supply about 20.8 kVA. A building whose loads are mostly lights, fans, split ACs and computers must spread them so that no phase exceeds that, even when the total looks comfortable.
- Imbalance. Keep the difference between the most and least loaded phase within about 10–20 % of the set’s rated current, roughly 9–17 A at 87 A full load. Larger imbalance heats the alternator and raises voltage on the light phase.
- Single-phase buildings. Do not buy a 62.5 kVA set for a building that has only a single-phase supply. Its three phase outputs must never be linked together, which would be a short circuit, and one phase alone gives only about a third of its rating. Either the building’s distribution is converted to three-phase by a licensed electrical contractor, or a single-phase set of the right size is chosen.
How the price of a 62.5 kVA set is worked out
Two quotations for “62.5 kVA” can describe different machines and scopes. These factors move the price at this size.
- Phase. Three-phase only at this rating, so the choice is between alternator and panel specifications, not between phases.
- Make and engine. Engines for this rating differ between makes in cylinder count, aspiration, fuel system and the emission after-treatment used to meet CPCB IV+. Ask for the engine model and its emission certificate.
- Canopy. A CPCB IV+ acoustic canopy is standard on new sets. Extra-low-noise canopies or weather-protected louvres for rooftops cost more.
- Manual or auto-start. A manual set with a basic panel is the lowest scope. An AMF panel that starts the set and changes over automatically adds cost and is the usual choice for apartments, hospitals and branches (see AMF panels).
- Battery and controller. Engines at this size start on 12 V or 24 V systems depending on the make. Controllers range from basic protection to remote monitoring and load management.
- Fuel tank. The standard base tank, a larger base tank or an external tank with a transfer pump.
- Warranty. Length and coverage vary with make and duty.
- New, used or rent. A new set’s quotation excludes GST, transport and installation. A rental rate covers the generator only: transport is charged at actuals and is in the customer’s scope, and cable and an operator are extra if you need them. Used and refurbished 62.5 kVA sets are load-bank tested before sale; refurbished sets carry a six-month warranty (rubber and plastic parts, consumables, fuel damage and overload excluded), and used as-is sets come with an inspection report and no warranty.
For how to compare two quotations line by line, see our diesel generator price guide.
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Buy new, buy used or rent a 62.5 kVA set
| Situation | Running hours per month | Duration of need | Usual best route |
|---|---|---|---|
| Apartment or hospital standby, owner-occupied building | Up to about 60 h | 10 years or more | New: CPCB IV+, warranty, a known history from day one |
| Factory or site with daily running on poor grid | 150–350 h | Several years | New, prime-rated, with an external tank |
| Branch office or showroom in leased premises | 20–60 h | 1–5 years, uncertain tenure | Long-term rental, or refurbished with the six-month warranty |
| Building whose own set is out for overhaul | Depends on outages | Weeks to a few months | Rent |
| Construction site, event or temporary works | 200 h or more | Days to months | Rent |
| Budget-led standby with own maintenance staff | Low to moderate | 2–5 years | Used as-is with inspection report, or refurbished |
A national life insurer’s branches in Hyderabad and Secunderabad rented 62.5 kVA acoustic sets from 2008, with Vijayawada and Khammam branches added in later years. Rental availability for your dates is confirmed when you ask; see generator on rent in Hyderabad. Second-hand: see used and refurbished generators.
Installation and site needs in Hyderabad
| Site item | What a 62.5 kVA set usually needs (approximate; make decides) |
|---|---|
| Footprint and clearance | Set of about 3.0–3.6 m × 1.1–1.4 m; keep about 1 m clear on the sides so the canopy doors open fully, and about 1.5–2 m clear at the radiator discharge end |
| Plinth | Level RCC plinth a little larger than the base frame, raised above the highest water level seen in the monsoon; anti-vibration mounts as supplied |
| Delivery and handling | At 1.3–2 tonnes, unloading needs a hydra or crane and a clear path; check lane width, gate height and any ramp before delivery day |
| Exhaust | Directed away from windows, balconies and the neighbour’s wall; the pollution-control guideline for stack height is the building height plus 0.2 × √kVA, which is about 1.6 m above the roof line for 62.5 kVA |
| Earthing | Separate neutral and body earth pits, commonly two of each; see DG set earthing and installation |
| Cable and breaker | 100 A four-pole MCCB; 35 sq mm aluminium XLPE armoured cable up to about 74 m, 50 sq mm up to about 100 m at full load; derate for hot rooms or bunched trays |
| Auto-start | An AMF panel with an interlocked changeover; no back-feeding into the grid; connections by a licensed electrical contractor |
Summer heat. Hyderabad’s April–May afternoons reach the low-to-mid 40s °C, and air entering a canopy parked against a sunlit wall is hotter still. Above the data sheet’s stated ambient, output is derated: a set planned at 80 % load absorbs this; one planned at 95 % overheats in May. See generator summer precautions.
Monsoon water-logging. Cellars and low-lying colonies flood after heavy rain: keep the set out of basements that take water, raise the plinth and seal cable trenches.
Battery. A weak starting battery is the commonest reason a standby set fails to start; replace like for like and keep the AMF charger working. See our battery and starting system service.
Worked example (illustrative): a 48-flat block with two lifts
Illustrative case. A 48-flat gated block has two 8-passenger lifts with drives, two 5 HP borewells, a 3 HP transfer pump, an STP blower, a small gym with two inverter ACs, and promises each flat backup for two lights and two fans. Is 62.5 kVA enough?
Result: 62.5 kVA fits, but only with the controls in step 2. Unlimited flat backup calls for a larger set.
Site-readiness checklist before a 62.5 kVA set arrives
- Plinth cast, cured and level, above monsoon water level, with the cable entry position marked.
- Delivery path measured: lane width, gate, overhead cables, and firm standing for the hydra.
- Exhaust direction agreed with neighbours and the association; stack route and height planned.
- Earth pits made and tested, with separate neutral and body earths.
- Cable size checked for the actual route length; MCCB and changeover rated 100 A, four-pole.
- Essential loads separated onto their own board; flat backup MCBs and borewell interlock wired.
- First diesel fill arranged, with a lockable filler and a record book for refills.
- A named person trained to read controller alarms.
Common mistakes
- Choosing 62.5 kVA for an apartment’s common loads and then adding flat backup without a per-flat limit, so the set runs near full load every summer outage.
- Running the 87 A feed on cable sized for a short route when the set sits 90–120 m from the meter room, so voltage drop starves the lifts and pumps.
- Replacing the starting battery with whatever is in stock rather than the voltage and capacity the engine needs, then finding the set will not crank after a long hot spell.
- Booking delivery without checking lane width, gate height and a standing place for the hydra, for a set that weighs well over a tonne.
What to send us
To price a 62.5 kVA set, tell us whether you want to buy new, buy used or rent; confirm three-phase supply; say whether you need auto-start (AMF) or manual; give the site location in or outside Hyderabad; send the load list, or photographs of the main distribution board and the lift and pump nameplates; and state the delivery date and, for rental, the duration. Use the generator sales enquiry, or WhatsApp the details and photographs.
Questions buyers ask about 62.5 kVA generators
What is the price of a 62.5 kVA generator in Hyderabad?
There is no fixed figure, because the price depends on the make and engine, the canopy, manual or AMF panel, the controller, the tank and the warranty, and it changes with market conditions. A new-set quotation excludes GST, transport and installation; a rental rate covers the generator only, with transport at actuals and cable or an operator extra if required; used and refurbished sets are quoted with their test and warranty terms. Send your load list, site location and whether you want to buy, rent or buy used on WhatsApp, and we will send the price.
How much diesel does a 62.5 kVA generator use per hour?
Approximately 6.5–7.3 litres per hour at 50 % load (25 kW), 9.8–10.9 litres at 75 % load and 13–14.5 litres at full load, based on 0.26–0.29 litres per kWh. At 25 % load it is about 4.3–5 litres per hour. The make’s data sheet gives the exact figures.
What is the full load current of a 62.5 kVA generator?
About 87 A per phase at 415 V three-phase (62,500 ÷ (1.732 × 415) = 86.95 A). Each phase can carry about 20.8 kVA, so single-phase loads must be spread evenly across the three phases.
What cable size is used for a 62.5 kVA generator?
For a run of up to about 74 m, 35 sq mm aluminium XLPE armoured cable with a 100 A four-pole MCCB and a 100 A four-pole changeover; for up to about 100 m, 50 sq mm aluminium. Copper is usually one size smaller for the same current. Hot rooms, bunched trays and longer routes need a fresh check of current rating and voltage drop.
What battery does a 62.5 kVA generator use?
Depending on the make, the engine starts on a 12 V system with one battery or a 24 V system with two 12 V batteries in series. Replace it with the voltage and capacity the engine maker specifies, keep the charger working, and test it before each summer, since Hyderabad heat shortens battery life.
What is the weight and fuel tank capacity of a 62.5 kVA generator?
A silent 62.5 kVA set typically weighs roughly 1.3–2 tonnes before fuel and measures about 3.0–3.6 m long (10–12 ft). Base tanks are commonly in the region of 100–200 litres. A 150-litre tank gives roughly 13 hours at 75 % load. The make decides the exact figures.
How many ACs can a 62.5 kVA generator run?
With no other load, roughly 20–24 inverter 1.5-ton split ACs spread evenly across the phases, or about 15–18 fixed-speed units if their restart is staggered. Alongside lights, pumps and computers, 10–15 ACs is the practical figure.
Can I rent a 62.5 kVA generator in Hyderabad, or buy a second-hand one?
Yes. 62.5 kVA is a common rental size, and availability of a set for your dates is confirmed when you ask. Used and refurbished 62.5 kVA sets are also offered: every set is load-bank tested, refurbished sets carry a six-month warranty with stated exclusions, and used as-is sets come with an inspection report.
Related pages
- Generators 50–125 kVA: motor starting and selection
- 30 kVA generator in Hyderabad
- Generator full-load current chart
- DG breaker, changeover and cable size chart
- Diesel generator price guide
- Generator on rent in Hyderabad
- Used and refurbished generators
- Project: 62.5 kVA sets for insurance branch offices
Technical content reviewed by D. Srinivas Reddy, Managing Partner and service engineer. Last updated 5 November 2026.