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Astor 300KVA 11/400KV
1,800.00 KGS
Calculated at Checkout



GZ Industrial Supplies is the supplier and distributor of Astor brand of Power Transformers in Nigeria. Our Astor Transformers 300KVA 11/400KV is a sturdy electrical transformer built to efficiently handle large-scale power conversion from 11 kilovolts (kV) to 400 kilovolts (KV). With its impressive capacity of 300 kilovolt-amperes (KVA), it's tailored to meet the rigorous demands of industrial and commercial settings, ensuring smooth power distribution and precise voltage management. Crafted with durability and advanced technology, this transformer guarantees consistent and secure electrical performance, making it an ideal choice for businesses seeking reliable power solutions.

Technical Specification Of ASTOR TRANSFORMERS 300KVA 11/400KV

  • Rated Power: 300[kVA] 
  • Insulation Liquid Mineral Oil
  • High Voltage: 11000[V] 
  • High Voltage tappings (DETC) +2 -2 2.5%
  • Low Voltage at no load: 400 [V] 
  • High Voltage insulation level [kV] LI 170 / AC 70 / Um 36
  • Low Voltage insulation level [kV] LI - / AC 3 / Um 1.1
  • Frequency: 50[Hz] 
  • Number of Phases: 3
  • Vector Group: Dyn11
  • Ambient temperature max./monthly/annual average °C 40 / / 20
  • Max. average temperature rise (Oil/Winding) [C/C] 60 / 65
  • Surface treatment Painted, RAL 7033 Altitude (a.s.l.) [m] <1000
  • Location Indoor/Outdoor

Frequently Asked Questions 

Q1 Why is the transformer used in kVA?

Transformers are used and rated in kVA, to account for power losses. The total heat losses in a transformer depends on volt-ampere (VA) only and not on the power factor of the load. That is why the transformer rating is given in kVA and not in kW.

Q2 How much is 1 kVA in Watts?

1 kVA is equal to 1 kW. That means that 1 kVA is equal to 1,000 watts. So to determine your transformers rating in watts, multiply the transformer's kVA power rating by 1000.

Q3 Why do transformers hum?

The repetitive expansion and contraction of the steel core inside the transformer is what causes transformer hum or noise. The expansion of the core depends on the amount of flux passing through it, which in turn depends on the applied voltage and the number of turns of transformer coils.

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