Lear Starter/Battery Fuse Technical Information

Requirements on Starter Fuses

• high power stand-alone application • battery cable protection• high current inrush capabilityg p y• slow-acting fuse characteristics• high ampacity in engine compartment• high ampacity in engine compartment• protection against mechanical impact• direct wire connection (crimped, welded, soldered)

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

cranking mode

+ -+

++starter motor alternator

---

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

traction mode

+ -+

++starter motor alternator

---

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

cranking mode, locking starter motor

+ -acting fuse +acting fuse

++starter motor alternator

---

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

traction mode, alternator error (short circuit)

acting fuse + -acting fuse +

++starter motor alternator

---

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

Assembly SpaceAssembly Spacey py p

Starter BatteryStarter BatteryStarter BatteryStarter Battery FuseFuse

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

Levels of ProtectionLevels of Protection

Level Fuse Advantages Disadvantages0 f dditi l t t ti0 no fuse no additional costs no protection

1 short circuit low costs high current no protection of

short circuit protector (passive)

low costs, high current protection

no protection of low over currents

2

starter/battery fuse (passive)

protection of battery cable and components

medium costs

3

safety battery clamp (active)

full protection of wire harness by controller unit

very high costs

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

Short Circuit Fuses (SCF)SCF.1 SCF.2 SCF.3

Petrol BZ Diesel NI4 Diesel DV6

150A Wire Protection Fuses (WPF)WPF.1 WPF.2 WPF.3Petrol Diesel DV6 Diesel DW10Petrol BZ Diesel NI4 Diesel DV6

p/n 17912 p/n 17932 p/n 1794615 mm² 20 mm² 30 mm²

Petrol Diesel DV6 Diesel DW10p/n 17230 p/n 17231 p/n 1723225 mm² 25 mm² 35 mm²

connection type: crimpedbasic material: CuCrSiTi

connection type: screwed, US-weldingbasic material: CuCrSiTi

surface material: Snhousing material: PET-GF30temperature range: -40 +130 °C

surface material: ---housing material: PET-GF30temperature range: -40 +130 °Ctemperature range: -40…+130 C temperature range: -40…+130 C

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

crimped connection to connection to battery cablebattery cablebattery cablebattery cable

screwed

ld d/ ld dwelded/soldered

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

short-circuit protector

customized fuse blow curvescustomized fuse blow curveshi h lhigh + low

over current protector

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

Lear Starter/Battery Fuse Technical Information

current carrying capacitycurrent carrying capacity

fuse

max. current load at ambient temperature

20°C 60°C 80°C 100°C

fuse 20 C 60 C 80 C 100 C

SCF.1 126A 100A 84A 65A

SCF.2 156A 124A 104A 80A

SCF.3 178A 143A 122A 95A

fuse

max. current load at ambient temperature

20°C 60°C 80°C 100°C

fuse 20 C 60 C 80 C 100 C

WPF.1 150A 130A 110A 80A

WPF.2 175A 140A 120A 90A

This document is property of Lear Corporation. It cannot be reproduced, delivered or disclosed to third parties without prior consent from Lear Corporation

WPF.3 200A 150A 130A 100A