Power Transformer ABB 500KVA 11.0/415KV

Power Transformer ABB 500KVA 11.0/415KV

GZ Industrial Supplies is the supplier and distributor of ABB brand of  Power Transformers in Nigeria. Our power transformer ABB 500KVA 11.0/415KV is part of a complete range of copper distribution transformers designed to grant the reliability, durability, and efficiency required in utility, industrial, and commercial applications. This distribution transformers are designed and manufactured to the highest quality standards to ensure enduring reliability, a characteristic necessary to foster peace of mind amongst customers and consumers.

Technical Specifications of Power Transformer ABB 500KVA 11.0/415KV

• Product Name: Liquid-Filled Groundmount Transformer; 3PH, 500 kVA, HV 11000D , LV 415yn
• Rated Power 500[kVA] 
• Insulation Liquid: Mineral Oil
• High Voltage: 11000[V] 
• High Voltage tappings (DETC): +2 -2 2.5%
• Low Voltage at no Load: 415[V] 
• Number of phases 3
• Vector Group: Dyn11
• Ambient temperature max./monthly/annual average: °C 40 / / 20
• Max. average temperature rise (Oil/Winding): 60 / 65[C/C] 
• Location Indoor/Outdoor
• Rate Voltage: 11-0,415KV
• Frequency: 50[Hz] 
• Impedance: 4(+-10%)[%] 
• No Load Losses: 1350(+15%)[W] 
• Load Losses at 75 °C: 7200(+15%)[W] 
• Standards: IEC 60076
• Total Weight: 1400[kg] 
• Cooling: ONAN

Frequently Asked Questions 

1. 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.

2. What is the difference between a power transformer and an instrument transformer?

A power transformer is primarily used in power transmission and distribution to either step up or step down a voltage level. While an instrument transformer is used in a circuit for the measurement of voltage or current.

3. How often should transformers be inspected and serviced?

The amount of use and the surroundings where the transformer is stored, determines how frequently it needs maintenance. The best environment for a transformer is one that is dry and clean; in this setting, the unit just needs annual inspections and maintenance. However, transformers kept under environmental conditions where the air is contaminated by substances like chemical fumes or dust, will need more frequent (every 3-6 months) inspections.

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