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Power Supply Reference Information
■Typical Safety Standards for Noise
Japan
Applicable law
Electric components regulation
Frequency
range (MHz)
0.525 to 1.605
(max. value between one line
and ground)
Permissible
(equipment operating on 1 kW
noise
max.)
(noise terminal
voltage)
Applicable law
Electric components regulation (Table 8)
Leakage
1 mA max. (measured at resistance of 1 kΩ)
current
● General
• Between current-carrying parts and non-
current-carrying metal parts
Up to 150 V
Over 150 V
• Between current-carrying parts
2.3 × rated voltage (AC, for 1 min)
Dielectric
● Double insulation: between current carrying
strength
parts and non-current-carrying metal parts
Function insulation
Protection insulation
Reinforced insulation
Values Stipulated for Conducted Emissions in Each Country
100
90
80
70
60
50
40
0.01
0.15
CISPR Pub. 14 (for office equip-
ment)
Voltage dB
Frequency
(μV)
range (MHz)
65
0.15 to 0.5
0.5 to 5
5 to 30
(max. value between one line
and ground)
Class I (stationary type)
Class I (portable type)
Class II
(measured at resistance of 1.5 kΩ and at
0.15 μF) (input: 106%)
● Between current-carrying parts and sur-
face of insulated part
1,000 V
1,500 V
Function insulation
Reinforced insulation
● Between current-carrying parts:
1,250 V (AC, for 1 min)
● Capacitor: (VDE0565)
Up to
Over
• Evaporative X capacitor:
150 V
150 V
4.3 x rated voltage (DC, for 1 min)
1,000 V
1,500 V
• Film Y capacitor: 1,500 V (AC, for 1
1,500 V
2,500 V
2,500 V
4,000 V
(AC, 1 min)
(1)
CISPR Pub14, VDE0875
(2)
FCC Part15-J (classA)
(3)
FCC Part15-J (classB)
(4)
VDE0871
(5)
VDE0871
(6)
(7)
VCCI
(8)
VCCI
0.45 0.5
1.6
5
Europe
VDE0871 (for high-frequency
applied equipment)
Class A
Voltage dB
Frequency
(μV)
range (MHz)
66
0.01 to 0.15
60
0.15 to 0.5
66
0.5 to 30
Class B
Frequency
range (MHz)
0.01 to 0.15
0.15 to 0.5
0.5 to 30
(max. value between one line
and ground)
IEC 380 (for office equipment)
3.5 mA max.
0.75 mA max.
0.2 5 mA max.
Class I
Class II
1,250 V
---
1,250 V
1,250 V
(AC, for 1 min)
min)
Frequency range (MHz)
(1) 0.15 to 0.5, 0.5 to 5, 5 to 30
(2) 0.45 to 1.6, 1.6 to 30
(classA)
(classB)
(3) 0.45 to 1.6, 1.6 to 30
(class1)
(4) 0.01 to 0.15, 0.15 to 0.5, 0.5 to 30
(class2)
(5) 0.01 to 0.15, 0.15 to 0.5, 0.5 to 30
(6) 0.525 to 1.605
(7) 0.15 to 0.5, 0.5 to 30
(8) 0.15 to 0.5, 0.5 to 5, 5 to 30
CISPR: Applied to office equipment.
FCC:
Noise regulation in U.S.A.
Class A: industrial equipment
Class B: household appliance and
VDE:
Noise regulation in Europe
(European version of the FCC used in
U.S.A)
30
Japan Electric components regulations:
Frequency range (MHz)
regulations applied to household and
industrial electric equipment in Japan
VCCI: Applied to data processing devices in Japan.
Technical Information
Power Supply
U.S.A
FCC Part 15 (for computers)
Class A
Voltage dB
Frequency
(μV)
range (MHz)
91 to 69.5
0.45 to 1.6
66
1.6 to 30
60
Class B
Frequency
Voltage dB
range (MHz)
(μV)
0.45 to 1.6
79 to 57.5
1.6 to 30
54
(max. value between one line
48
and ground)
UL114 (for office equipment)
general
5 mA max.
Double insulation 0.25 mA max.
(measured at resistance of 1.5 kΩ
and at 0.15 μF) (input: 110%)
● Between primary non-current-carry-
ing parts and across-the-line capaci-
tor terminals
Up to 250 V
1,000 V
Over 250 V
1,000 V+2 U
(AC, for 1 min)
U: maximum indicated voltage
Voltage dB (μV)
66, 60, 66
60, 69.5
48, 48
91 to 69.5, 66, 60
79 to 57.5, 5, 54, 48
65
79, 73
66, 56, 60
information equipment including
communications equipment.
Voltage dB
(μV)
60
69.5
Voltage dB
(μV)
48
48
15
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