Description

RXEDK/RAEDK – Time-over/undervoltage relay and protection assemblies

RXEDK 2H is a microprocessor-based time-over/undervoltage relay with two measuring stages, which are switchable for over- or undervoltage functions independently of each other.

Stage 1 is programmable for two different time functions: definite time characteristic and inverse time characteristic.

Stage 2 has a definite time characteristic, settable from 0 to 10 s.

RXEDK 2H can be used in several different applications, such as: neutral point voltage-, overvoltage-, flash-over-, undervoltage- or stator earth-fault protection. The optional built-in filters provide extended application possibilities. For example, a model measuring the third harmonic is available. Other frequencies of interest may also be quoted.

RXEDK/RAEDK – Time-over/undervoltage relay and protection assemblies

• Wide setting ranges in two measuring stages
• Built-in operating time delays for both stages
• Over- and undervoltage setting selectable for both stages
• Allows setting close to maximum service values due to high resetting ratio
• Available with optional filters for different frequency response
• Low burden