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Applications使用例Applications使用例
5
SUR
GE A
BSO
RB
ER
サージアブソーバ
1)AC 耐圧試験を必要とする電源 Power supply requiring AC withstanding
使用例 :SW 電源、インバータ電源、OA 機器及び家電機器の電源
■推奨部品 Recommended parts
Application:SW power supply, inverter power supply, power supply of office and home appliance
注)IEC60950-1 Am.2 Ed.2.0(2013) にて、全ての IT 機器の一次回路において、一定条件を満足した VDR※1)(バリスタ)とGDT※ 2)ガス入り放電管の直列接続により、基礎絶縁を橋絡することが認められました。IEC60950-1 Am.2 Ed.2.0(2013) permits series usage of VDR※1) and GDT※ 2) to bridge the basic insulation in the primary circuits of all IT equipment.
※1) The VDR complies with the requirements of AnnexQ.※2) The GDT complies with : *the electric strength test for BASIC INSULATION ; and * the external Clearance and Creepage distance requirements for
basic insulation.
Varistor1):Varistor voltage:More than 220V(UL recognized:More than 270V)Varistor2): Varistor voltage:More than 470V"+" : electrically connected series by gas discharge tube and varistor
In case surge absorber located between power line to ground; point A in figure, reacts against the surge, residual voltage is transmitted to the latter part of the circuit. Some part of the circuit is destroyed because of amplified residual voltage by LC resonance of a noise filter and/or a coil. Potential equalization before and behind the common mode coil by a surge absorber; GDT2, is recommended as a measure. Carrying out potential equalization between the terminals of a common mode coil and the both ends of a coil with a surge absorber (GDT2, GDT3) is recommended.
AC耐電圧試験条件AC Withstand Voltage Test
放電管1GDT1
バリスタMOV
放電管2GDT2 , GDT3
~AC125V
Test is not required CDA70-401LDE37-401W
220V~270V(φ10mm)
CDA70-301LCDA70-401LCDA70-501MDE37-401WDE37-501M
AC1,000VAC1,200V
CDA70-272MCDA70L-272M
FA55-272
~AC250V
Test is not required CDA70-501MDE37-501M
470V~680V(φ10mm)
AC1,500VCDA70-302MCDA70L-302M
FA55-302
AC1,800VCDA70-362MCDA70L-362M
FA55-362
AC2,000V FA55-402
GDT1
GDT1GDT1
GND
GND
GDT2
GDT2
GDT2
GDT2 GDT3
BA
BA
MOV
MOV
MOV
MOV
MOV
GDT1
Symmetric circuita) 対称な回路
Asymmety circuitb) 非対称な回路
Applications使用例Applications使用例
7
SUR
GE A
BSO
RB
ER
サージアブソーバ
3)3 相電源を使用する機器 Equipment using a three-phase power supply