Self-reclosing residual current relay with circuit breaker, used with an external residual current transformer, 4 poles D curve

Description

Self-resetting cut-off device with circuit breaker and ultra-immunised residual current protection. Programmable unit with display, which measures leakage currents (residual current protection), and orders the disconnection or reclosing of the circuit breaker (circuit breaker protection) by means of a motor that regulates it mechanically. Measuring the leakage current, IΔ, requires an external residual current transformer, which is supplied separately.  The assembly is regularly used in single-phase and three-phase electrical installations that require high continuity of the electric supply. It has inputs/outputs which provide information and control of the state of the electrical installation in which it is working. LED display and backlit (LCD) display:

• Residual current protection/reclosing parameters.
• Protection trip current intensity.
• Number of reclosures
• Protection status messages, etc.

Applications

The RECmax LPd, linked with the WGC toroidal transformers, ensures earth-leakage and circuit-breaker protection with self-reclosing after an residual current, overload or short-circuit trip. It is a good solution for infrastructures that are difficult to control and monitor due to their location in the following electric panels:

• Telephony systems
• DTT systems
• Computer systems, UPS

AC power supply

User interface

Environmental characteristics

Mechanical characteristics

Differential protection

Reclosure type

Thermal-magnetic protection

Standards