FRER Srl products

Multifunction transducer, suitable for three-phase three or four wires systems with unbalanced load (single phase on demand), even with distorted waveforms. It allows the transmission via a communication data interface (RS485 with ModBus RTU protocol as standard) of all the main characteristic variables of an electric network, including active and reactive energy counting, greatly reducing the complexity and the costs of installation. In addition,  one output programmable as alarm or pulse output  for energy retransmission are optionally available as option.  This multifunction transducer is supplied with a software which permits to set the required parameters. It allows to easily set input values (CT & VT ratios), system parameters (such as THD reference, integration time, correct phase sequence, ...) , serial communication parameters, digital alarm/pulse output and any analogue output features. 

Multifunction transducer for DC systems. The voltage input is directly wired to the line, while the input proportional to the current is derived from shunts.  It allows the transmission via a communication data interface (RS485 with ModBus RTU protocol as standard) of all the main characteristic variables of a DC network, including energy and Ah counting, greatly reducing the complexity and the costs of installation. In addition,  one output programmable as alarm or pulse output  for energy retransmission are available as option. This multifunction transducer is supplied with a software to set required parameters. It allows to easily set input values (Shunt ratio), system parameters (such as sampling time), serial communication parameters, digital alarm/pulse output and the analogue output features.

The Multichannel earth leakage relays COMBI 6 have been designed for the monitoring and protection of up to 6 independent systems. A single instrument of 3 DIN modules size allows a considerable optimization of the overall dimensions and of the wiring connection procedures, thanks also to the presence of withdrawable terminals blocks for the connections. The 4 front keys allow immediate programming, further simpli?ed by the copy/paste function available in the setting menu.A push button dedicated to the Scroll of the channels allows the selection of the input to be displayed, while in case of trip intervention, the display will automatically show the last tripped channel, and the relative LED will be ON.It is available in 3 versions: Type B only - Type AF only - Mixed B / AF with 5 different input combinations.

The Multichannel earth leakage relays COMBI 6 have been designed for the monitoring and protection of up to 6 independent systems. A single instrument of 3 DIN modules size allows a considerable optimization of the overall dimensions and of the wiring connection procedures, thanks also to the presence of withdrawable terminals blocks for the connections. The 4 front keys allow immediate programming, further simpli?ed by the copy/paste function available in the setting menu.A push button dedicated to the Scroll of the channels allows the selection of the input to be displayed, while in case of trip intervention, the display will automatically show the last tripped channel, and the relative LED will be ON.It is available in 3 versions: Type B only - Type AF only - Mixed B / AF with 5 dfferent input combinations.

XTDB019 is a residual direct current monitoring module (RDC-M-module) which, electrically coupled to a protection unit or switching unit, performs the function of the residual direct current monitoring device (RDC-MD), in full compliance with the requirements of IEC 62955. As an option, the module can also integrate residual alternate current monitoring, in compliance with the threshold and timing requirements for RDC-PD devices. The module is suitable for use in AC charging stations permanently connected to the mains (mode 3 according to IEC 61851-1), where is prescribed the presence of a residual direct current detecting device (RDC-DD) with 6mAdc trip threshold. The XTDB019 features a wide cable passage (19 mm) and is available with optional UART communication.