Battery Isolation

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Cartek Electronics

Most FIA race and rally championships require cars to be fitted with a spark-proof master switch to cut off all electrical circuits and stop the engine. The Cartek Battery Isolator meets these requirements. This Battery Isolation system is revolutionary compared to what else is out on the market.

The Solid State Isolator contains two isolation circuits. The first breaks the connection between the negative side of the vehicle’s battery from chassis/earth, thereby isolating the battery power, while the second cuts power to the engine electrics and thereby stops the engine from running.

Solid State means no moving parts; all power switching is fully electronic. Early types of electrical isolation were by large mechanical master-switches while more modern systems have utilised electro-mechanical solenoids. Both of these types of systems contain mechanical electrical contacts which, due to the combination of high electrical current and the shocks and vibration of the race car environment, sparking between the contacts can occur which can result in contact erosion and eventual unreliability. This Solid State Isolator is also filled with a hard setting resin which prevents any ingress of dust, dirt or water therefore further increasing its strength and reliability.

Designed to be chassis mounted close to the vehicle’s battery, this allows the heavy current power cables to be kept as short as possible. Typical installation requires one external kill button and just one internal on-off switch which are all interconnected using low voltage wiring. However, the flexibility of this system also allows additional kill button/devices to be incorporated as well as full operation using just a single on/off switch if necessary. Microprocessor controlled incorporating false trigger detection, internal temperature monitoring and short-circuit protection offer unprecedented safety. At just 140g this Isolator is also incredibly light.

This device is available in three different engine configurations. Standard, GT and Formula. We recommend the Standard Battery Isolator for engines up to 3000cc and the GT for engines over 3000cc, tuned turbo engines and highly modified race engines running high compression. Formula has been designed for cars that do not run a charging system such as Formula 3.

In Summary

• Fully electronic with no moving parts
• Totally sealed against water and dirt
• Completely resistant to shock and vibration
• Fully integrated with built in alternator run-down circuitry. No extra components required
• Driver operation by a single internal ON-OFF button/switch
• External operation by single or multiple 'strike' button(s)
• Buttons / switches connected to Isolator using light weight wiring
• Mounts close to battery for reduced cabling
• Very small and weighs just 140g
• Designed and manufactured in UK using high quality components

When fitted to a race car our Solid State Battery Isolator simultaneously isolates the battery and kills the engine immediately when triggered in accordance with FIA safety regulations.

Isolators can be supplied stand alone for connection to customers own switches/buttons or as full kits with high quality, fully waterproof, internal and external buttons and safety stickers.

Specification

Size:	L = 93mm, W = 50mm
Weight:	140g.
Operational Voltage:	7v - 18v.
Current consumption:	0.03A (Max ON OFF)
Battery negative switching current:	(Std + Formula) 200-250A typ, 1000A surge. (GT) 450-600A typ, 2000A surge.
Positive power switching current:	30A maximum.
Storage temperature	-10°C - +125°C
Operating temperature:	-10°C - +85°C
Battery negative terminal:	M8 brass stud.
Positive power terminals:	M6 brass stud.