Term long text

Short text

UNIT

Description

Alarm Tr%

Alarm Tr%

Alarm obtained from the parameter settings concerning the relative load-level for the transformers

Load current M-1

Load current M-1

A

Load current for three-winding transformer regarding fictitious midpoint towards the connection point of winding 1. Current presented on the side of the connection point

Load current M-2

Load current M-2

A

Load current for three-winding transformer regarding fictitious midpoint towards the connection-point of winding 2. Current presented on the side of the connection point

Load current M-3

Load current M-3

A

Load current for three-winding transformer regarding fictitious midpoint towards the connection-point of winding 3. Current presented on the side of the connection point

Load M-1

Load M-1

kVA

Three winding transformer, transformer load regarding the fictitious midpoint towards the connection point for winding 1

Load M-2

Load M-2

kVA

Three winding transformer, transformer load regarding the fictitious midpoint towards the connection point for winding 2

Load M-3

Load M-3

kVA

Three winding transformer, transformer load regarding the fictitious midpoint towards the connection point for winding 3

No load energy losses

W Noload loss

kWh

The documented no load losses for the transformer, expresses as annual energy loss

No load loss cost

Cost Noload loss

Currency

The capitalized no load losses for the transformer based on price, year and interest

No load losses

Noload loss

kW

The documented no load losses for the transformer

Rated power

Rated power

kVA

The transformer rated power

Rated power W 1-2

Rated power W 1-2

kVA

Rated power for three winding transformer, winding 1 – 2

Rated power W 1-3

Rated power W 1-3

kVA

Rated power for three winding transformer, winding 1 –3

Rated power W 2-3

Rated power W 2-3

kVA

Rated power for three winding transformer, winding 2 – 3

Rated ratio W 1-2

Rated voltages W 1-2

Nominal ratio for three winding transformer from rated voltage of the stated rated voltages, winding 1 - 2

Rated ratio W 1-3

Rated voltages W 1-3

Nominal ratio for three winding transformer from rated voltage of the stated rated voltages, winding 1 - 3

Rated ratio W 2-3

Rated voltages W 2-3

Nominal ratio for three winding transformer from rated voltage of the stated rated voltages, winding 2 - 3

Rated voltage ratio

Rated voltage ratio

Nominal ratio for two winding transformer from rated voltage of the stated rated voltages

Relative load M-1

Relative load M-1

%

Load level for three winding transformers. Calculated load / rated power. Winding from fictitious midpoint to connection-point of winding 1

Relative load M-2

Relative load M-2

%

Load level for three winding transformers. Calculated load / rated power. Winding from fictitious midpoint to connection-point of winding 2

Relative load M-3

Relative load M-3

%

Load level for three winding transformers. Calculated load / rated power. Winding from fictitious midpoint to connection-point of winding 3

Relative trf load

Rel.trf load

%

Relative transformer load of a two winding transformer.

Tap changer

Tap changer

Tap changer. Either set value or calculated position if transformer regulation has been requested

Tripping time trf-up device

Ttripp trf.prim

sec

Tripping time for transformer protection calculated for three-phase short circuit current coming from down side busbar and recalculated till upper side with possible correction of constant

Voltage down side

Volt.down

V

The calculated voltage on the busbar of the transformer downside.