CYRIX PARALLEL RELAY 120A VICTRON

Cyrix Drum Combiners

The Cyrix battery combiner is a microprocessor-controlled heavy-duty relay that automatically connects batteries in parallel when one of them reaches the preset voltage (indicating that the battery is charging) and disconnects when the voltage drops below the float level (indicating that one or more batteries are low). Cyrix battery combiners are an excellent replacement for diode isolators. The main feature is that there is no voltage drop. Therefore the output voltage of alternators or battery chargers does not need to be increased.

The Cyrix-CT 12/24 is a battery parallelizer that can connect the service battery to the starter battery via the automatic switch.

The Cyrix-CT automatically detects the system voltage, in fact when the combiner detects that the starter battery has reached the connection voltage it activates in order to allow the parallel charging of the service battery.
It also does not need a D+ signal from the alternator, because it activates based on the battery voltage and connects or disconnects automatically.
The parallelizer is able to interrupt the connection in case of excessive temperature of the contacts, and reactivates it after they have cooled down.

The Cyrix-CT 12/24 features a dual power supply, this allows bi-directional sensing of voltage and power from both batteries.

The Cryix-CT senses the voltage of both batteries. It will therefore activate if, for example, the service battery is being charged.

It is equipped with StartAssist which allows parallel connection in case of emergency.

It can be activated by pressing a button (the Cyrix stays active for 30 seconds) or with a switch to connect the batteries in parallel manually.
This function is very useful in case of emergency, for example when the starter battery is flat or damaged.

Installation:
1 Disconnect the minus of both batteries
2 Place the Cyrix-ct closest to the starter battery
3 Connect the + of the batteries to the brass bolts of the Cyrix-ct.
Install a fuse in series (photo 2).
4 The fuse must be sized according to the cross-section of the wire used, but must not exceed 120 A.
5 Connect the Cyrix-ct “battery -” minus (86) and reconnect the minus of both batteries.

Cyrix-CT 12/24 Technical Data

• Power supply 12/24 V
• Direct current 120 A
• Peak current 180A (5 seconds)
• Absorption < 4mA
• M6 cable connection bolt
• Faston contacts terminal 85 and 86
• Ignition voltage 13-13.8V (12V) / 26-27.6V (24V)
• Isolation voltage 11-12.8V (12V) / 22-25.7V (24V)
• Weight 0.15 Kg
• Dimensions 46 x 46 x 80 mm