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Summary of content (11 pages)

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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL 1.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL 3. Explanation of Functions and Precautions 3-1. Input Voltage Range Input voltage range is single phase 88 ~ 264VAC ( 47 ~ 63Hz ) or 125 ~ 373VDC for LS50, LS75 and LS100. For LS150, selectable switch 115/230VAC will decide the input voltage range as mentioned in the table below. Input voltage which is out of specification may cause unit to damage.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL 3-7. Series Operation For series operation, either method ( A ) or ( B ) is possible. Method ( A ) Method ( B ) Power Supply Power Supply Output Terminal Output Terminal Load Output Terminal Load Load Output Terminal 3-8. Parallel Operation (A) (B) 1. 2. 3. Operation to increase the Output Current is not possible. Operation as a Backup Power Supply is possible as follows.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL 4. Isolation / Withstand Voltage 4-1. Isolation Test Isolation resistance between output and FG (chassis) shall be more than 100MΩ at 500VDC. For safety, voltage setting of DC isolation tester must be done before the test. Ensure that the unit is fully discharged after the test. (a) Output ~ FG (chassis) : 500VDC, 100MΩ or more AC(L) +V AC(N) +V -V Isolation Tester -V FG 4-2. Withstand Voltage This series is designed to withstand 3.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL 5. Mounting Directions 5-1. Output Derating according to the Mounting Directions Recommended standard mounting is Method ( A ). Method ( B ), ( C ) and ( D ) are also possible. Refer to the derating below. Please do not use installation Method ( E ), where the PCB will be on the topside and heat will be trapped inside the unit. In the following derating curve, the maximum output current is considered to be 100%.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL LS75-3.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL LS100-3.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL LS150-3.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL (B) Output Derating versus Input Voltage (Convection Cooling) LS100-3.3, -5, -12, -15, -24, -36 & -48 Output Derating Vs Input Voltage LOAD (%) 120 100 80 60 40 20 0 88 115 230 264 Vin (VAC) NOTE : LS50, LS75 & LS150 series do not require Input Voltage Derating. 5-2 Mounting Method 1) 2) 3) This is convection cooling type power supply.
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NEMIC-LAMBDA LS50⋅75⋅100⋅150 Series INSTRUCTION MANUAL 6. Wiring Method z The output load line and input line shall be separated and twisted to improve noise sensitivity. z Use all lines as thick and short as possible to make lower impedance. z Noise can be reduced by attaching a capacitor to the load terminals. z For safety and EMI considerations, connect the FG terminal of LS series to mounting set ground terminal.