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Battery Fuse

Battery Fuse
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Applications: a in battery storage systems a in UPS systems a in e-mobility

Battery Protection Fuses Battery storage fuse selection AC Short circuit current aa Short circuit current depending on battery model, type and capacity, low compared to operating current aa Short circuit current has to be interrupted in <5 seconds Required steep characteristics: protection with Battery fuse link required! Operating current aa Operating current depends on battery storage specification aa Battery operation: voltage of DC link circuit decreases to the final discharge voltage Consider maximum current at final discharge voltage for fuse link selection 10000 Short circuit point...

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Note: CH Battery fuse links are used in combination with fuse disconnector EFH 10 DC

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CH 10x38 BATTERY Fuse link 800V d.c. General characteristics

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Dimensions for CH 10x38 Battery fuses I/t characteristics for CH 10x38 Battery fuses

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CH 14x51 BATTERY Fuse link 800V d.c. General characteristics

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Dimensions for CH 14x51 Battery fuses I/t characteristics for CH 14x51 Battery fuses

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EFH 10 DC - Fuse holder General characteristics

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General characteristics Rated voltage Rated current Max. fuse link power dissipation Cross section of connecting wire Pole build-in width Mounting on the rail Utilization category Rated torque Standards Fuse-links Standards - Fuse holder

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for efficient gas recombination of up to 99% and freedom from electrolyte maintenance or water adding. Not restricted for air transport-complies with IATA/ICAO Special Provision A67. UL-recognized component. Can be mounted in any orientation. Computer designed lead, calcium tin alloy grid for high power density. Long service life, float or cyclic applications. Maintenance-free operation. Low self discharge. Nominal Voltage Number of cell Design Life Nominal Capacity 77oF(25oC) 10 hour rate (18.7A, 10.8V) 187Ah 5 hour rate (35.8A, 10.5V) 179Ah 1 hour rate (126A, 9.6V) 126Ah Internal...

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General characteristics NH 000L Battery fuse link 80V d.c.

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NH BATTERY fuse link 80V d.c. Standard indicator

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Time-current characteristics NH00C and NH00Time-current characteristics NH1C and NH1 15

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NH BATTERY fuse link 550V d.c. General characteristics

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NH BATTERY fuse link 700V d.c. General characteristics

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NH BATTERY fuse link 800V d.c. General characteristics NH BATTERY fuse link 800 V d.c.

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I/t characteristics for NH Battery fuses size 3L 4

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* Switching operations at 550V DC are not allowed under load

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1-pole horizontal fuse-switch disconnector for baseplate mounting * see also table of accessories for HVL ** for fuse size NH 2 use HVL 3

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Protective covers type PRS 00 MB 1p Protective covers type PRS 00 MB 1p HVL00 2P M8-M8

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Protective covers type PRS 1,3 MB Ip

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How to choose the correct Battery fuse example Pw=67,5kW tE= 20min (back-up time of storage system) AC Battery fuse 700V d.c., 160A Battery NBA type 2V 1 OPzS 50: 250cells, Un=2V Technical data 1. Short circuit point (Ik): Ik=580A 2. Operating point (tE/IB): IB = Pw/UE...67,5kW / 450V = 150A 3. DC rated fuse link: Battery fuse 700V d.c., L/R=10ms NH00 gG 160A 690V a.c.….problem DC rating at min. breaking capacity ~ 2xIn

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Time-current characteristics 1. Short circuit point (Ik): 4 2 04 6 4 2 103 6 4 2 102 6 4 2 101 6 4 2 100 6 4 2

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Time-current characteristics

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Battery fuse selection-I/t characteristic Time-current characteristics operating point short circuit point

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Time-current characteristics operating point short circuit point Required operating time Battery fuse 700V d.c. 160A operating time gG fuse 160A operating time

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A few reasons why protection of batteries with simple fuse link is not OK: aa lammable hydrogen gas is always present during battery recharging. F Hydrogen gas is potentially explosive if allowed to accumulate in a closed area. aa revent open flames, sparks, or electrical arcs in the battery charging area P to minimize the danger of explosion. aa reaking capacity of »fork lift fuse link« is less than 1kA at nominal B voltage!

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