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Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

LB RL

Symbols

Resistive-reactive load bank

A resistive-reactive load bank adds inductive reactor steps to resistive elements so that a generator can be tested at its full rated kVA and rated power factor, typically 0.8 lagging. This exercises the alternator excitation, voltage regulator and transformer heating in a way a resistive bank cannot.

Drawing use: SLD
Application: Microgrid systems
Reference family: IEC / IEEE / ANSI

A distinction that matters

A resistive-reactive bank tests at rated kVA and power factor; a resistive bank tests at unity power factor only.

Full reference

Symbols

Resistive load bank

A resistive load bank is a set of resistor elements, switched in steps and cooled by fans, used to load a generator, UPS or battery system for commissioning and maintenance tests. Permanent load banks are also installed to keep diesel engines above minimum load when site demand is low.

Drawing use: SLD
Application: Microgrid systems
Reference family: IEC / IEEE / ANSI

A distinction that matters

A resistive load bank applies only active load; a resistive-reactive bank can also apply lagging kvar.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.