1) Power supply requiring AC withstanding

Application: Switching, inverter, or other power supply or converter


IEC60950-1 Am.2 Ed.2.0 (2013) permits using a VDR※1) and a GDT 2) to protect the main circuits of all IT equipment.


※1) The VDR complies with the requirements of Annex Q.
※2) The GDT complies with:
* the electric strength test for basic insulation, and;
* the external clearance and creepage distance requirements for basic insulation.

 

 

 

Recommended parts

  125VAC 250VAC
Normal mode (Between L1 and L2)
DSANR‐1
DSAZR1‐301L
DSANR‐3
DSAZR2‐501M
Common mode
(Between L1/L2 and GND)

AC withstanding voltage test
Test not required DSANR‐1, DSAZR1‐301L DSANR‐3, DSAZR2‐501M
1000VAC-1min
1200VAC-3s
DSANR‐4, DSAZR1‐242M
CDA70-272M + varistor1)
CDA70L-272M + varistor1)
DA53‐272M + varistor1)
DSA‐242M + varistor1)
DE37‐272M + varistor1)
DSAZR2‐242M
CDA70‐272M + varistor2)
CDA70L-272M + varistor2)
DA53‐272M + varistor2)
DSA‐242M + varistor2)
DE37‐272M + varistor2)
1500VAC-1min DSANR‐5, DSAZR1‐302M
CDA70-302M + varistor1)
CDA70L-302M + varistor1)
DA53‐302M + varistor1)
DSA‐302M + varistor1)
DE37‐302M + varistor1)
DSANR‐5, DSAZR2‐302M
CDA70‐302M + varistor2)
CDA70L-302M + varistor2)
DA53‐302M + varistor2)
DSA‐302M + varistor2)
DE37‐302M + varistor2)
1800VAC-3s DSANR‐6, DSAZR1‐362M
CDA70-362M + varistor1)
CDA70L-362M + varistor1)
DA53‐362M + varistor1)
DSA‐362M + varistor1)
DE37‐362M + varistor1)
DSANR‐6A, DSAZR2‐362M
CDA70‐362M + varistor2)
CDA70L-362M + varistor2)
DA53‐362M + varistor2)
DSA‐362M + varistor2)
DE37‐362M + varistor2)
2000VAC-1min DSANR‐10B, DSAZR1‐452M
DSA‐402M + varistor1)
DE37‐452M + varistor1)
DSANR‐10B, DSAZR2‐452M
DSA‐402M + varistor2)
DE37‐452M + varistor2)

Varistor1): Varistor voltage > 220V (UL recognized is > 270V)
Varistor2): Varistor voltage > 470V
"+": Gas discharge tube and varistor connected in series

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