In short. Reddy Generators rents, sells and services diesel generators for granite quarries, processing units, rice mills, contractors and buildings in Karimnagar and the Peddapalli–Ramagundam industrial belt. Karimnagar is about 164 km from our Hyderabad base along the Rajiv Highway through Siddipet, and Ramagundam about 65 km further; every visit and delivery is planned with you and timing is confirmed when you call. This page deals with what makes this district different: generators that power sites far from the panel — quarry faces, contractor yards and pump houses — where cable length and site layout decide whether the equipment works.
Who this page is for: Granite quarry and processing owners, rice-mill owners, contractors working at the power, fertiliser, cement and coal sites of the Peddapalli–Ramagundam belt, and hospitals, colleges and buildings in Karimnagar who need a generator rented, bought, serviced or put on AMC.
Key facts
- Route: the Rajiv Highway (SH-1), a four-lane road from Hyderabad’s Outer Ring Road through Siddipet and Karimnagar to Ramagundam, about 207 km in all.
- Power distribution: TGNPDCL serves Karimnagar and Peddapalli districts.
- Granite: Karimnagar is one of the main granite quarrying districts in the state, known for brown granites such as Tan Brown; the Karimnagar and Gangadhara areas have the largest concentration of quarries.
- Industry: the NTPC Ramagundam station (2,600 MW), the Ramagundam Fertilizers and Chemicals urea plant (commercial production from 2021), cement at Basantnagar, and Singareni coal mining in the Godavari valley.
- Water and farming: the Lower Manair Dam at Karimnagar, paddy and cotton as main crops, and a large rice-milling industry.
- Heat: May highs averaging about 42 °C, and a record of 47.3 °C at Ramagundam.
- Nearby confirmed work: South Central Railway hired a 100 kVA set from us for Bellampalli station in 2010, on the coal-belt line north of Ramagundam.
Why site layout matters so much here
In a Hyderabad apartment the generator usually stands a few metres from the main panel. In Karimnagar’s working sites it often does not. A quarry’s set stands at the camp, away from blasting, while the diamond wire saw or dewatering pump works a few hundred metres away at the face. A contractor at a power or fertiliser plant puts the rental set where the plant allows, not where the welding bay is. A pump house sits on the canal bank, the set on higher ground. Long cables bring voltage drop, motors that will not start, contactors that chatter and protection that will not trip on a fault at the far end. Getting the layout and cable right is as important as getting the kVA right.
Local conditions and generator decisions
| Local condition | Effect on the generator | Decision |
|---|---|---|
| Quarry faces and work areas hundreds of metres from the set | Voltage drop on running and much more on motor starting; fault current too low to trip breakers quickly | Size cables for voltage drop as well as current; check that protection at the far end trips. See voltage drop. |
| Blasting, flying rock and heavy vehicle movement at quarries | Damage to enclosures and cables | Locate the set outside the blast zone, protect cable routes with conduit or burial, and mark them. |
| Stone dust and coal dust | Blocked radiators and air filters; abrasion | Shorter filter intervals; radiator cleaning in the AMC; set placed upwind where possible. |
| Summer highs in the 40s °C, with records above 47 °C | Derating and high-temperature trips in the afternoon | Rate at site ambient; shade without blocking air. See summer precautions. |
| Contractor work inside large plants with permit systems | Strict rules on location, earthing, fuel storage and fire safety | Agree the set’s position, earthing and refuelling method with the plant’s safety team before the set travels. |
| Monsoon rain on open quarries and canal banks | Waterlogged plinths and cable joints | Raised plinth or skid on firm ground; joints in weatherproof boxes above water level. |
Sites in Karimnagar and the Ramagundam belt — typical sets and duty
| Site type | Where | Typical set size | Duty and what matters |
|---|---|---|---|
| Granite quarry (wire saws, dewatering, workshop, camp) | Karimnagar and Gangadhara areas and other quarry villages | 82.5–320 kVA | Off-grid or weak-grid prime power; long cables to the face; dust and blasting. See site and construction power. |
| Granite cutting and polishing unit | Around Karimnagar town and along the highways | 125–500 kVA | Gang saws, cutters and polishing lines; large motor starts. |
| Rice mill | Karimnagar, Peddapalli and Jagtial areas | 82.5–320 kVA | Motor-heavy; long hours during milling seasons. See rice and grain. |
| Contractors at power, fertiliser, cement and mining sites | Ramagundam, Basantnagar and nearby | 62.5–500 kVA rental | Shutdown and maintenance jobs: welding, lighting, site offices, pumps; fixed dates. See shutdowns and turnarounds. |
| Irrigation and water-supply pumping | Canal and reservoir systems across the district | 62.5–750 kVA | Large pump motors at a distance from the set; starting method and cable size. |
| Hospitals, colleges, malls and apartments | Karimnagar town | 30–500 kVA | Critical and comfort loads; acoustic sets; AMF changeover. |
Typical ranges only; your load list and layout decide the size.
Illustrative case: a wire saw 250 metres from the generator
Illustrative case. A quarry near Karimnagar runs a 45 kW diamond wire saw at the face, 250 m from the set at the camp. The other loads at the camp are an 11 kW dewatering pump, 10 kW of workshop and welding, and 6 kW of lighting and camp supply.
Saw current = 45,000 ÷ (1.732 × 415 V × 0.85 PF × 0.93 efficiency) ≈ 79 A
Voltage drop = 1.732 × I × L × (R cos φ + X sin φ), with L = 0.25 km, cable reactance about 0.08 Ω/km, and copper resistance raised by about 20 % for operating temperature
| Copper cable | Resistance when warm (Ω/km) | Running drop | Drop on soft start at about 3 × current, PF 0.3 |
|---|---|---|---|
| 35 mm² | 0.63 | about 19.8 V (4.8 %) | about 27.3 V (6.6 %) |
| 50 mm² | 0.46 | about 15.0 V (3.6 %) | about 22.2 V (5.3 %) |
| 70 mm² | 0.32 | about 10.8 V (2.6 %) | about 17.8 V (4.3 %) |
The 35 mm² cable carries the current comfortably but leaves the saw at the edge of a 5 % running-drop limit, with almost nothing left for the generator’s own voltage dip when the saw starts. The 50 mm² cable keeps the running drop near 3.6 % and the starting drop near 5 %, which leaves room for the set’s transient dip; 70 mm² is worth it if the face will move further away as the quarry develops. For the set, 72 kW on a 160 kVA set (128 kW) is about 56 % of rating, with headroom for the saw’s start and for summer heat — a 125 kVA set would run at 72 % and would need its starting performance checked carefully against the data sheet. Our cable sizing and voltage-drop calculator repeats this for your own distances.
One more check at this distance: the protective device at the generator end must still trip quickly for a fault at the far end of the cable. Long cables limit fault current, so the breaker setting and the earth-fault protection should be confirmed by the electrical contractor.
Running a quarry on generator power: hours, fuel and service
Many quarries run with no grid supply at all, so the generator is the prime power source, not a standby. That changes how the set should be chosen and looked after:
- Rating class. A set that runs every working day must be selected on its prime rating, not its standby rating. A standby-rated set used as the quarry’s only supply is being run beyond what it was rated for.
- Fuel in litres per day. In the example above, 72 kW at an illustrative 0.27 litre per kWh is about 19.4 litres per hour. Ten hours a day is about 194 litres, and 26 working days about 5,050 litres a month. Fuel storage, delivery and records should be planned to that figure; our page on fuel and refuelling control covers the records.
- Service by hours. At around 260 running hours a month, a quarry set reaches its oil and filter change interval far sooner than a standby set does — often monthly, depending on the maker’s interval. Dusty sites usually need air filters more often than the book interval.
- Load pattern. When the saw stops for wire changes or at the end of a cut, the set may run for long periods on camp lighting alone. If that is a large share of the hours, a second small set for nights and idle periods saves fuel and avoids the light-load problems explained in our light-load guide.
- Standby for the standby. Where a day lost to a breakdown is expensive, ask about a second set or a rental arrangement for overhaul periods.
How sales, rental, service and spares work for Karimnagar
Rental for quarries and contractors
Rental sets come from our own fleet in Hyderabad by road. For a contractor at a plant in the Ramagundam belt, send the job dates, the loads, the plant’s requirements for location, earthing and fire safety, and the gate-pass process; we confirm availability and dispatch when you book. For quarries running long hours, we agree oil-change and filter intervals at the start so service visits are planned. Our rental supplier checklist lists what to settle before signing.
Sales
New CPCB IV+ compliant sets come through our supply tie-ups with all major makes. For quarries and processing units, used and refurbished sets from 15 to 2,000 kVA are an option: every set is load-bank tested before sale; refurbished sets carry a six-month warranty (exclusions apply); used sets sold as-is come with an inspection report. We buy used sets and accept part exchange.
Service, AMC and spares
Breakdown calls are taken seven days a week, 8:30 am to 8:30 pm; travel time to Karimnagar or Ramagundam is confirmed when you call. AMC visits are planned in advance, with dust-related checks — air filters, radiator, alternator cleanliness — given priority for quarry and processing sites. Overhauls, alternator rewinding, AVR and controller work and spares for all makes are handled from Hyderabad. Across Telangana we maintain DG sets, AVRs and fire-fighting engines at nearly 50 TS TRANSCO substations (see that work), and South Central Railway hired a 100 kVA set from us for Bellampalli station in 2010.
Remote and quarry site rental readiness checklist
Complete this before the rental set leaves Hyderabad; most first-day delays at remote sites come from items on this list.
- Set position agreed: firm, level ground or a plinth, outside the blast zone and clear of vehicle routes.
- Access for the delivery truck and a crane or hydra to the set position, including turning space.
- Distance measured along the actual cable route from the set to each load, not in a straight line.
- Cable size checked for voltage drop at that distance; cable and lugs available, or rental cable requested.
- Cable route protected: buried, in conduit, or on supports, and marked where vehicles cross.
- Earth pit at the set, tested, with an earthing arrangement agreed by the site’s electrical contractor.
- Distribution board with suitable breakers and earth-fault protection at the set and at the far end.
- Motor starters known: direct-on-line, star-delta or soft starter for each large motor.
- Fuel arrangement: storage away from the set’s hot parts, a delivery schedule in litres per day, and records of each delivery.
- Fire extinguisher at the set; the plant’s permit and safety rules understood for contractor sites.
- Named person on site who will take readings and report alarms.
- A licensed electrician booked for the connection on the delivery day.
Common mistakes
- Choosing cable size by current alone and ignoring voltage drop over a long run to the quarry face or pump house.
- Measuring the distance in a straight line instead of along the real cable route.
- Sending a rental set to a plant before agreeing its position, earthing, fuel storage and permit requirements with the plant’s safety team.
- Placing the set inside the blast zone or on a vehicle route, where flying rock and trucks damage the enclosure and cables.
What to send us
Send us the site’s location in Karimnagar, Peddapalli or the Ramagundam area, the list of loads with motor ratings and starter types, the cable route length from the set to each major load, photographs or a sketch of the site layout, the running hours per day, and for contractor sites the job dates and the plant’s requirements for location, earthing and fuel. Use the Generator rental enquiry, or WhatsApp the details and photographs.
Questions customers in Karimnagar ask
Do you provide generators on rent in Karimnagar?
Yes. We rent sets from our own fleet to quarries, contractors, events and buildings in Karimnagar, Peddapalli and Ramagundam. Send the load, dates and site access; availability and dispatch are confirmed when you book.
Can you supply a generator for a granite quarry?
Yes, new, used or refurbished, or on rent. We size the set and the cables together, because the distance from the set to wire saws and pumps at the face often decides whether the equipment starts and runs properly.
What cable size do I need from the generator to my machine 250 metres away?
It depends on the load and how it starts. For a 45 kW wire saw at 250 m, a 50 mm² copper cable keeps the running drop near 3.6 %, where a 35 mm² cable would be close to 5 %. Send us the load and route length for a check.
Do you rent generators to contractors at Ramagundam?
Yes. For shutdown and maintenance jobs at plants in the Ramagundam belt, we plan the set’s position, earthing, fuel and plant safety requirements with you before dispatch.
Do you service generators in Peddapalli and Ramagundam?
Yes. Our service area covers all of Telangana. Breakdown calls are taken seven days a week, 8:30 am to 8:30 pm, and travel time from Hyderabad is confirmed when you call.
Do you buy used generators in Karimnagar?
Yes. We buy used generators and take sets in part exchange; every used or refurbished set we sell is load-bank tested first.
Have you worked in the north Telangana coal belt?
Yes. South Central Railway hired a 100 kVA generator from us for Bellampalli station in 2010, and we maintain generators at TS TRANSCO substations across Telangana.
Related pages
- Voltage drop on generator cables
- Cable sizing and voltage-drop calculator
- Rental power for construction and sites
- Rental power for shutdowns
- Rental cables
- Motor starting on generators
- TS TRANSCO substation maintenance
- 3 × 250 kVA Soundproof DG Hire, Ramagundam Fertiliser Project
Technical content reviewed by D. Srinivas Reddy, Managing Partner and service engineer. Last updated 3 November 2026.