H-Family
AC-DC Converters <100 W
Benign Environment
10 - 70
Edition 2/96 - Melcher AG
MELCHER
The Power Partners.
10.3
Electromagnetic Emissions
Table 10: Emissions at Ui nom and Io nom
Series
Standard
EN 55011, 1991 1
EN 55022, 1987 2
≤30 MHz
≥30 MHz
110H
<B
230H
<B
Table 11: Electric strength test voltage, insulation resistance, clearance and creepage distances
Characteristic
Input to output
Input to case
Output to case
Output to output
Unit
Values according to IEC 950
Electric strength
DC: 1 s
4243 1
2122
707
300
V
test voltage
AC: 50 Hz, 1 min
3000 1
1500
500
200
Insulation resistance
at 500 V DC
≥300
≥100
–
M
Clearance and
4.0
2.0
1.0
0.9
mm
creepage distances
1 Only subassemblies performance in accordance with IEC 950
Display Status of LEDs
U
o1 > 0.95…0.98Uo1 adj
U
i max
U
i ov
U
i min
U
i uv
U
i
U
i abs
OK
i
U
o1 > 0.95…0.98Uo1 adj
I
o nom
I
oL
I
o
OK
I
o L
U
o1 < 0.95…0.98Uo1 adj
T
C
i
T
C max
T
PTC threshold
U
i inh
i
+50 V
+0.8 V
+2.4 V
-50 V
U
inh threshold
LED off
LED on
LED Status undefined
Fig. 9
LEDs "OK" and "i" status versus input voltage
Conditions: Io ≤ Io nom, TC ≤ TC max, Uinh ≤ 0.8 V
Ui uv = undervoltage lock-out, Ui ov = overvoltage lock-out
LED "OK" status versus output current
Conditions: Ui min...Ui max, TC
≤ TC max, Uinh ≤ 0.8 V
LED "i"versus case temperature
Conditions: Ui min...Ui max, Io ≤ Io nom, U inh ≤ 0.8 V
LED "i"versus U inh
Conditions: Ui min...Ui max, I o ≤ Io nom, TC ≤ TC max
Supplementary Data
Important Advice
Testing by applying AC voltages will result in high and
dangerous leakage currents through the Y-capacitors
(see fig. 1). Melcher will not honour any guarantee/war-
ranty claims resulting from high voltage field tests. Ref-
erence is also made to chapter: "Safety and Installation
Instructions".
Isolation
Input to output electric strength tests, in accordance with
the safety standards IEC 950, EN 60950, VDE 0805 and
EN 41003 are performed as factory tests and should not be
repeated in the field.
1 Identical with CISPR 11 (1990-09) and VDE 0875 part 11 (1992-07)
2 Identical with CISPR 22 (1985) and FCC Part 15, VDE 0878 part 3 (1989-11)