# What is MVA rating of transformer?

## What is MVA rating of transformer?

MVA rating calculation formula: MVA (Mega Volt-Amp) rating of the transformer S(MVA) is equal to the product of primary current I(Primary) in amps and Primary Voltage V(primary) in volts divided by 1000000.

What are the specifications of transformer?

11 kV.

• 400 V. Nominal Voltage.
• 10.1 Rated Power. The continuous rating of the distribution Transformers shall be 100kVA, 250 kVA, 400 kVA and 630 kVA.
• 10.3 Impedance Voltage.
• 10.4 Short Circuit Performance.
• 10.5 Flux Density.
• 10.6 Noise Level.
• How is MVA load calculated?

A typical power factor for 3-phase loads is 0.8. Calculate 3 phase amps, or “I”, using the formula: I = (MVA x 1,000, 000)/(Vphase x 1.732). The 1,000,000 represents “mega” where 1 megavolt is 1,000,000 volts.

### What is MVA and kV?

The transformer is the heart of the substation. For example, a typical substation transformer would be rated 69-13 kV and 20 MVA; meaning the primary or high voltage is 69 kV, the secondary or low voltage is 13 kV and the transformer has a power rating of 20 MVA or 20,000 KVA. …

What is HT and LT in transformer?

HT means high tension or high voltage, where in a small current is used with a very high voltage(for creating plasma). LT means low tension where in a low voltage is used with very high current(for heating the resistive boats).

What are the specifications for a substation power transformer?

Specification – Substation Power Transformer Standard Number: HPC-8DC-23-0001-2015 DM# 3362297 Page 2 of 135 Print Date 20/11/2020 © Horizon Power Corporation – Document Number: HPC-8DC-23-0001-2015 Uncontrolled document when printed. Printed copy expires one week from print date. Refer to Document No. for current version.

#### What are the voltage ratings of GE Transformers?

XD|GE offers a broad line of power transformers with three phase ratings from 20 to 1500 MVA, voltage ratings from 69 up to 765kV, and single phase ratings to 1000 MVA, 1000KV. Three phase auto transformers are available with ratings to 765kV, 1500 MVA, and single phase auto transformers to 1000kV, 1500 MVA.

Is there a limit to the frequency of a transformer?

** Frequency period is dependent upon circumstances– maximum is 5 years from last issue, review, or revision whichever is the latest. If left blank, the default must be 1 year unless otherwise specified.

When does the Horizon Power Transformer document expire?

© Horizon Power Corporation – Document Number: HPC-8DC-23-0001-2015 Uncontrolled document when printed. Printed copy expires one week from print date. Refer to Document No. for current version.