1000 kVA transformer is a common medium-to-large power transformer used in industrial, commercial, and utility applications. If you need this type of transformer, please contact our company.Let me know if you need help with sizing, protection schemes, or vendor comparisons! Here’s a detailed breakdown of its key specifications and considerations.

Key Specifications

1. Rated Capacity:

1000 kVA = 1,000,000 VA (Volt-Amperes).

Continuous Load: Typically handles ~800 kW at 0.8 power factor (PF).

2. Voltages:

Primary Voltage: Common ratings: 11 kV, 13.8 kV, 33 kV (utility/generation), or 480V (industrial).

Secondary Voltage: 480V, 400V, 240V, or 208V (depending on regional standards).

3. Cooling & Type:

Oil-Immersed (ONAN/ONAF):

Outdoor use (e.g., substations).

Cooling: Oil-natural air-forced (ONAF) for higher efficiency.

Dry-Type (AA/FA):

Indoor use (e.g., commercial buildings).

Air-cooled; lower fire risk (no oil).

4. Impedance:

Typical: 5–6% (limits fault current; critical for protection coordination).

5. Efficiency:

≥ 98.5% (compliant with DOE 2016/IE3 standards).

Losses: No-load (core) losses ≈ 1.5–2.5 kW; load (copper) losses ≈ 8–12 kW.

6. 1000 kVA transformer Weight:

Oil-Filled: ~2,500–4,000 kg; requires oil containment.

Dry-Type: ~1,500–2,500 kg; smaller footprint.

Applications

Industrial: Powering heavy machinery, data centers, or manufacturing plants.

Commercial: High-rise buildings, hospitals, universities.

Renewables: Step-up transformers for solar/wind farms.

Utility: Distribution substations or step-down from transmission lines.

Selection Considerations

1. Load Profile:

Peak demand, harmonics (K-factor rating for non-linear loads).

2. Location:

Outdoor (oil-filled) vs. indoor (dry-type, VPI/VPE encapsulation).

3. Protection:

Overcurrent relays, Buchholz relay (oil transformers), temperature monitoring.

4. Regulation & Taps:

±5% voltage adjustment (usually 2–5 taps).

5. Standards:

IEEE C57.12.00 (oil), C57.12.01 (dry); IEC 60076.

Installation & Safety

Clearances: Minimum 1–3 m around the transformer for ventilation/maintenance.

Grounding: Solidly bonded to earth grid (IEEE 80).

Arc Flash Risk: Requires protective gear during maintenance (NFPA 70E).

Sound Level: ≤ 65 dB(A) at 1 m (critical for urban installations).

Common Issues

Overloading: Reduces lifespan; monitor temperature rise (≤ 65°C).

Harmonics: Causes overheating; use K-rated transformers.

Inrush Current: 8–12× full-load current (requires delayed protection).

Let me know if you need help with sizing, protection schemes, or vendor comparisons!