Data Sheet

QT20.241, QT20.241-C1
Q-Series
24V, 20A, THREE PHASE INPUT
Apr. 2017 / Rev. 2.1 DS-QT20.241-EN
7. HOLD-UP TIME
3AC 400V 3AC 480V
Hold-up Time typ. 44ms 44ms At 24V, 10A, see Fig. 7-1
min. 36ms 36ms At 24V, 10A, see Fig. 7-1
typ. 22ms 22ms At 24V, 20A, see Fig. 7-1
min. 18ms 18ms At 24V, 20A, see Fig. 7-1
Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions
0
10
20
30
40
50ms
320 360 400 440 3x480Vac
Input Voltage
Hold-up Time
2
4
V,
1
0
A
,
t
y
p
.
2
4
V
,
2
0
A
,
t
y
p
.
2
4
V,
1
0
A
,
m
i
n
.
2
4
V
,
2
0
A
,
m
i
n
.
- 5%
Hold-up Time
Output
Voltage
Input
Voltage
L1 L2 L3
8. DC-OK RELAY CONTACT
This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed
voltage from a unit connected in parallel to the power supply output.
Contact closes As soon as the output voltage reaches the adjusted output voltage.
Contact opens As soon as the output voltage dips more than 10% below the adjusted output voltage.
Short dips will be extended to a signal length of 250ms. Dips shorter than 1ms will be ignored.
Contact re-closes As soon as the output voltage exceeds 90% of the adjusted voltage.
Contact ratings max. 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A Resistive load
min. 1mA at 5Vdc Min. permissible load
Isolation voltage See dielectric strength table in section 18.
Fig. 8-1 DC-ok relay contact behavior
8/27
250ms
0.9* V
ADJ
<
1ms
10%
V
OUT
= V
ADJ
>
1ms
open openclosed closed
All parameters are typical values specified at 24V, 20A, 3x 400Vac, 50Hz, symmetrical mains voltages, 25°C ambient and after
a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany