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WAPDA DDS-84 & IEC 60076 COMPLIANT · 10 kVA TO 50 MVA

Transformer Manufacturer & Turnkey Supplier in Pakistan

TransfoLine (Private) Limited is Pakistan's premier high-voltage substation manufacturer, distributor, and certified overhaul specialist. We supply, test, commission, and service oil-immersed, cast-resin dry-type, and pad-mounted transformers for industrial factories, commercial plazas, and utility grid interconnections across all DISCO jurisdictions.

Capacity Range 10kVA - 50MVA
Voltage Classes 11kV / 415V to 132kV
Warranty 18 Months Brand New
DISCO Approval 100% Grid Compliant
Request Turnkey Transformer RFQ → 📞 Call High-Voltage Engineer: 0300 6919113
TransfoLine Power Division TL-TR-MFR
WAPDA DDS-84 IEC 60076 CERT
✓ Pure Electrolytic Copper: 99.99% conductivity with double paper / enamel insulation.
✓ Prime CRGO Steel Cores: M4/M5 laser-scribed laminations for minimum eddy current losses.
✓ Class-I Mineral Oil: High flash point (>140°C) with BDV dielectric test >50 kV.
Ready Stock in Lahore Yard 18-Month Guarantee
⚡ Direct Access by Capacity Rating:
100 kVA 200 kVA 300 kVA 400 kVA 500 kVA 600 kVA 630 kVA 750 kVA 800 kVA 1000 kVA (1 MVA) 2000 kVA (2 MVA) 2500 kVA (2.50 MVA) 3150 kVA (3.15 MVA) 4000 kVA (4 MVA) 5000 kVA (5 MVA) 6000 kVA (6 MVA) 7000 kVA (7 MVA) 8000 kVA (8 MVA)
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Engineering Capacity Matrix

Select Your Transformer Capacity & Application

Every industrial factory, commercial plaza, and agricultural cluster requires a precise balance of low-voltage current, impedance voltage, and switchgear coordination. Explore our dedicated capacity engineering pages below:

100 kVA 139.1 A LV

100 kVA Distribution Transformer

Pole-mounted or plinth distribution for small commercial plazas, poultry farms, cold rooms, and tubewells.

Primary: 11 kV Dyn11
Breaker: 160A / 200A MCCB
Oil Vol: 210 Liters
Net Wt: 680 kg
Full 100 kVA Specs & Price →
200 kVA 278.2 A LV

200 kVA Distribution Transformer

Standard high-demand rating for multi-story residential buildings, flour mills, and medium light industrial units.

Primary: 11 kV Dyn11
Breaker: 315A / 400A MCCB
Oil Vol: 380 Liters
Net Wt: 1,120 kg
Full 200 kVA Specs & Price →
300 kVA 417.4 A LV

300 kVA Distribution Transformer

Ground-mounted substation for plastic injection molding, modern commercial retail plazas, and surgical plants.

Primary: 11 kV Dyn11
Breaker: 500A / 630A MCCB
Oil Vol: 520 Liters
Net Wt: 1,480 kg
Full 300 kVA Specs & Price →
400 kVA 556.5 A LV

400 kVA Distribution Transformer

Heavy plinth substation for pharmaceutical cleanrooms, modern agro-processing hubs, and Tier-2 hospital wings.

Primary: 11 kV Dyn11
Breaker: 630A / 800A MCCB/ACB
Oil Vol: 680 Liters
Net Wt: 1,820 kg
Full 400 kVA Specs & Price →
500 kVA 695.6 A LV

500 kVA Industrial Transformer

Industrial flagship rating powering automotive parts foundries, textile sizing mills, and steel rolling mills.

Primary: 11 kV Dyn11
Breaker: 800A / 1000A ACB
Oil Vol: 850 Liters
Net Wt: 2,250 kg
Full 500 kVA Specs & Price →
600 kVA 834.7 A LV

600 kVA Industrial Transformer

Custom commercial substation for 500kW rooftop industrial solar EPC systems and beverage packaging lines.

Primary: 11 kV Dyn11
Breaker: 1000A / 1250A ACB
Oil Vol: 940 Liters
Net Wt: 2,520 kg
Full 600 kVA Specs & Price →
630 kVA 876.5 A LV

630 kVA IEC Industrial Transformer

International standard rating popular in multinational plants, export EPZ zones, and large corporate towers.

Primary: 11 kV Dyn11
Breaker: 1000A / 1250A ACB
Oil Vol: 980 Liters
Net Wt: 2,640 kg
Full 630 kVA Specs & Price →
750 kVA 1,043.4 A LV

750 kVA Industrial Transformer

Heavy-duty continuous motive transformer for oil & ghee processing, paper mills, and industrial chemical units.

Primary: 11 kV Dyn11
Breaker: 1250A / 1600A ACB
Oil Vol: 1,150 Liters
Net Wt: 3,050 kg
Full 750 kVA Specs & Price →
800 kVA 1,113.0 A LV

800 kVA Industrial Transformer

High-torque production rating for steel re-rolling mills, rice husking complexes, and large hotel resorts.

Primary: 11 kV Dyn11
Breaker: 1600A ACB (LSIG)
Oil Vol: 1,220 Liters
Net Wt: 3,250 kg
Full 800 kVA Specs & Price →
1000 kVA 1,391.2 A LV

1000 kVA (1 MVA) Power Substation

The 1 MVA threshold rating: dedicated turnkey outdoor substation for major textile spinning, cement, and 1MW solar plants.

Primary: 11 kV Dyn11
Breaker: 1600A / 2000A ACB
Oil Vol: 1,450 Liters
Net Wt: 3,850 kg
Full 1000 kVA Specs & Price →
2000 kVA 2,782.4 A LV

2000 kVA (2 MVA) Power Transformer

Heavy industrial substation engineered for 20,000+ spindle textile spinning mills, shopping malls, and 2 MW solar parks.

Primary: 11 kV Dyn11
Breaker: 3200A ACB / 11kV VCB
Oil Vol: 2,400 Liters
Net Wt: 6,800 kg
Full 2000 kVA Specs & Price →
2500 kVA 3,478.0 A LV

2500 kVA (2.5 MVA) Substation

Apex power capacity for 5-8 ton steel induction furnaces, large cold chain logistics hubs, and Tier-3 data centers.

Primary: 11 kV Dyn11
Breaker: 4000A ACB / BBT
Oil Vol: 2,950 Liters
Net Wt: 8,200 kg
Full 2500 kVA Specs & Price →
3150 kVA 4,382.3 A LV

3150 kVA (3.15 MVA) Substation

Designed for severe cyclic steel re-rolling mills, auto part foundries, and chemical chlor-alkali complexes.

Primary: 11 kV Dyn11
Breaker: 5000A ACB / BBT
Oil Vol: 3,600 Liters
Net Wt: 9,800 kg
Full 3150 kVA Specs & Price →
4000 kVA 5,564.8 A LV

4000 kVA (4 MVA) Substation

Powers heavy cement grinding units, massive denim composite plants, and 4 MW captive power generation substations.

Primary: 11 kV Dyn11
Breaker: 6300A ACB / BBT
Oil Vol: 4,400 Liters
Net Wt: 12,500 kg
Full 4000 kVA Specs & Price →
5000 kVA 6,956.0 A LV

5000 kVA (5 MVA) Power Substation

Engineered for medium steel arc melting furnaces, chemical electrolysis, and 132/11kV dedicated industrial feeders.

Primary: 11 kV / 33 kV
Breaker: Dual 4000A ACBs
Oil Vol: 5,500 Liters
Net Wt: 15,500 kg
Full 5000 kVA Specs & Price →
6000 kVA 8,347.2 A LV

6000 kVA (6 MVA) Power Substation

Heavy industrial workhorse for 10-ton induction furnaces, continuous paper mills, and primary grid feeding substations.

Primary: 11 kV / 33 kV
Breaker: Heavy BBT Trunking
Oil Vol: 6,400 Liters
Net Wt: 18,000 kg
Full 6000 kVA Specs & Price →
7000 kVA 9,738.4 A LV

7000 kVA (7 MVA) Power Substation

Apex power capacity for 10-12 ton steel induction furnaces, chemical synthesis electrolysis, and 132/11kV intake substations.

Primary: 11 kV / 33 kV
Breaker: 10,000A BBT / Dual ACBs
Oil Vol: 7,500 Liters
Net Wt: 21,500 kg
Full 7000 kVA Specs & Price →
8000 kVA 11,129.6 A LV

8000 kVA (8 MVA) Power Substation

Heavy industrial powerhouse for 12-15 ton steel melting crucibles, mega paper packaging mills, and primary transmission feeds.

Primary: 11 kV / 33 kV / 132 kV
Breaker: 12,000A BBT / Dual ACBs
Oil Vol: 8,600 Liters
Net Wt: 24,800 kg
Full 8000 kVA Specs & Price →
10MVA–50MVA Grid Scale

Custom High-Voltage & Furnace Transformers

Engineered for 66kV/132kV transmission grids, 15-30 ton steel arc furnaces, and multi-megawatt solar plants.

Voltage: Up to 132 kV
Cooling: ONAF / OFWF
Tap Changer: Motorized OLTC
Standards: IEC / NTDC Grid
Turnkey EPC Substation Engineering →
Transformer Technologies

Engineered for Pakistan's Harsh Climate & Grid Fluctuations

From 50°C ambient summer temperatures in Punjab to highly corrosive coastal moisture in Karachi, our transformer designs are customized for extreme operational resilience.

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Oil-Immersed Distribution (ONAN)

The standard outdoor workhorse across Pakistan. Features high-dielectric mineral insulating oil, natural thermosiphon convection cooling, corrugated or radiator fin tanks, and off-circuit tap changers (±2.5%, ±5%).

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Cast Resin Dry-Type (AN/AF)

Zero oil, 100% fireproof, non-explosive transformers for indoor basements, high-rise plazas, hospitals, and server rooms where municipal building codes prohibit oil hazard.

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Pad-Mounted Compact Substations

Self-contained tamper-proof steel enclosures integrating an 11kV vacuum ring main unit (RMU), distribution transformer, and LT distribution panel for luxury housing societies and gated industrial parks.

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Solar Inverter Step-Up Transformers

Multi-winding (split LV) step-up transformers designed specifically to mitigate inverter harmonics, electrostatic coupling, and DC bias on 100kW to 5MW industrial solar installations.

Need Technical Guidance for Feeder Sanctioning & Breaker Coordination?

Our senior high-voltage electrical engineers assist your facility with complete load calculations, DISCO NOC processing, short-circuit current calculations, and power factor penalty elimination.

Consult Substation Specialist →
Commercial Selection Guide

Brand New vs. Certified Reconditioned Transformers

TransfoLine offers both prime factory-new manufacturing and fully overhauled certified reconditioned units. Choose the commercial path that fits your facility's operational timeline and capital expenditure budget:

Engineering Feature Brand New Unit (TransfoLine Prime) Certified Reconditioned (Overhauled)
Conductor Material 100% Electrolytic Prime Copper (99.99%) Tested Copper / Aluminium Windings Rewound
Core Steel Lamination Virgin Cold-Rolled Grain Oriented (CRGO) M4/M5 Factory Annealed & Inspected Low-Loss Core
Insulating Dielectric Oil Virgin Class-I Inhibited Oil (BDV > 60 kV) High-Vacuum Dehydrated Oil (BDV > 50 kV)
Warranty Protection 18 Months Comprehensive Guarantee 12 Months Full Replacement Warranty
Capital Cost Impact Standard Capital Asset Investment 40% to 50% Capital Cost Savings
DISCO Energization Compliance 100% Guaranteed LESCO/FESCO/KE Approval Supplied with Full Lab Test Reports for Inspection
Typical Delivery Timeline 2 to 7 Days (Custom Built: 2-3 Weeks) Same-Day / 24-Hour Emergency Dispatch
Turnkey Substation EPC

End-to-End High-Voltage Engineering Services

TransfoLine does not just deliver a transformer to your gate. We provide complete turnkey substation design, DISCO grid interfacing, civil pad construction, and ongoing operational maintenance:

Turnkey Substation EPC (11kV / 132kV)

Complete Grid Setup

Complete engineering, procurement, and construction from 11kV incoming overhead line, pole structure, drop-out cutouts, lightning arrestors, plinth civil works, to the main LT distribution switchgear panel.

  • DISCO Feeder load sanctioning & NOC documentation
  • Civil foundation pad with oil-retention pit
  • HT/LT cabling with heat-shrinkable outdoor terminations

Oil Dehydration & BDV Filtration

On-Site High Vacuum

Our mobile high-vacuum oil filtration units mobilize to your factory yard to remove dissolved moisture, sludge, and combustible gasses, restoring dielectric breakdown strength above 60 kV without factory shutdown.

  • Breakdown voltage (BDV) dielectric testing
  • Moisture removal down to <10 PPM
  • Acidity neutralization and dissolved gas analysis (DGA)

24/7 Emergency Rewinding & Standby

Emergency Mobilization

When an industrial transformer burns or trips on earth fault, production stops. TransfoLine provides immediate loaner standby units and 48-hour emergency core rewinding with factory vacuum drying.

  • Standby loaner transformers deployed in 2-4 hours
  • Complete core rewinding with electrolytic copper
  • Post-repair full routine testing and WAPDA certification
Direct Engineering Quote

Request Official Commercial & Technical Quotation

Submit your factory or commercial plaza specifications. Our engineering estimation desk will calculate your full-load currents, verify DISCO feeder requirements, and issue an itemized proposal within 2 hours.

🔒 Direct Factory Engineering Consultation · No Spam · Fast DISCO Feeder Response
Technical Clarifications

Transformer Engineering & Procurement FAQ

Common questions asked by procurement managers, consulting electrical engineers, and factory owners in Pakistan:

How do I select the right transformer kVA rating for my industrial plant?

To size a transformer accurately, calculate your total connected electrical load in kilowatts (kW), divide by your operational plant power factor (typically 0.8 to 0.85), and incorporate a 20% to 25% safety reserve margin to accommodate inductive motor starting current surges and future factory expansion. For instance, a factory with a 240 kW running load requires: 240 kW ÷ 0.8 = 300 kVA, making a 300 kVA or 400 kVA transformer the ideal choice.

What are the standard loss levels under WAPDA Specification DDS-84?

WAPDA DDS-84 strictly mandates maximum allowable no-load losses (iron core losses) and load losses (copper winding losses at 75°C reference temperature) for each rating. For instance, a 100 kVA transformer must not exceed ~260W no-load loss and ~1550W load loss. Exceeding these thresholds results in severe rejection during DISCO testing inspection. All TransfoLine units are engineered to meet or beat these efficiency figures.

What tests must be performed before energizing a transformer in Pakistan?

Prior to energization and DISCO meter installation, our accredited laboratory conducts mandatory routine tests: 1) Insulation Resistance (Megger test: HV-LV, HV-Earth, LV-Earth), 2) Voltage Turns Ratio & Vector Group verification, 3) Winding DC Resistance measurement across all phases, 4) Dielectric Breakdown Voltage (BDV) test on mineral oil (>50 kV), and 5) Separate source AC high-voltage withstand test. Certified test certificates are provided for DISCO inspectors.

Can TransfoLine handle transformer transportation and crane offloading?

Yes. TransfoLine operates specialized heavy-duty transport trailers equipped with hydraulic loading cranes. Our specialized rigging crew offloads, positions the transformer onto your reinforced concrete civil pad, connects high-voltage 11kV terminations, installs the low-voltage copper busbar or cable links, and completes separate body and neutral earth pits ensuring ground resistance below 1.0 Ohm.

Call Us 24/7 0300 6919113 Call Now →