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Schneider Electric

1000 kVA Transformer, Schneider Electric Energy Poland Sp. z o.o.
Basic Data
• Type: TZA 1000/15
• Factory Number: 20117601
• Year of Manufacture: 2012
• Rated Power: 1000 kVA
• Number of Phases: 3
• Connection Group: Dyn5
• Frequency: 50 Hz
Voltages and Currents
Medium Voltage (MV) Side
• MV Voltage: 15.75 kV
• MV Rated Current: 36.66 A
Low Voltage (LV) Side
• LV Voltage: 400 V
• LV Rated Current: 1443.38 A
The transformer is a conventional MV/LV transformer: 𝑆 = √3 𝑈 𝐼
for:
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• 𝑆 = 1000 kVA
• 𝑈 = 400 V
• 𝐼 ≈ 1443 A
Operating Parameters
• Short-circuit Voltage: 6%
• Maximum Short-circuit Duration: 3 s
• Cooling: AN (air natural)
• Insulation Class: F
• Protection Rating: IP00
• Operating Mode: C
• Maximum Ambient Temperature: 40°C
Losses
• No-load Losses: 2400 W
• Load Losses: 9400 W
Dimensions / Weight
• Total Weight: 2600 kg
Environmental Classes
• Environmental Class: F1 / C2 / E2
This means:
• F1 – enhanced fire resistance,
• C2 – resistance to thermal shocks,
• E2 – ability to operate in a harsh environment (humidity/contamination).
Tap Changer Regulation
The transformer has a tap changer on the LV side:
Position • MV Voltage
• +5% • 16,538 V
• +2.5% • 16,144 V
• Rated • 15,750 V
• -2.5% • 15,356 V
• -5% • 14,962 V
The secondary voltage remains:
• 400 V
Standard
• EN 60076
Manufacturer
• Schneider Electric Energy Poland Sp. z o.o.
• Mikołowska Transformer Factory

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