QT40.361 Datasheet, PDF (23/27 Pages) PULS GmbH – THREE PHASE INPUT

Q-Series
QT40.361
36V, 26.7A, THREE PHASE INPUT
24.4. USING ONLY 2 LEGS OF A 3-PHASE SYSTEM
No external protection devices are required to protect against a phase-loss
L1
failure.
L2
L3
This power supply can also be permanently operated on two legs of a 3-
PE
phase system. However, it is not recommended for this power class since the
supplying 3-phase network can become unbalanced.
The output power must be reduced according to the curves below when
operation on only two legs of a 3-phase system. A long-term exceeding of
these limits will result in a thermal shut-down of the unit.
open
Power Supply
AC
L1
L2
L3
DC
A use below 340Vac with more than 22A output current can also result in a thermal shut-down.
During power-on, some start-up attempts can occur until a permanent output power is available.
EMC performance, hold-up time, losses and output ripple differ from a three phase operation. Therefore, check
suitability of your individual application.
Such use is not included in the UL approval. Additional tests might be necessary when the complete system has to be
approved according to UL 508 or UL60950-1.
The screw of the terminal which remains unused must be securely tightened.
Fig. 24-5
Output current vs. ambient temperature
Allowed Output Current for Use on only Two
Legs of a 3-Phase System
30A
25
C
20
15 A... 2x 460 to 552Vac
B... 2x 340 to 460Vac
10 ^{C... max. 60 seconds}
BA
5
0
-25
0
20 40 60 70°C
Ambient Temperature
Fig. 24-6
Hold-up time vs. input voltage
Hold-up Time for Use on only Two Legs of a
Three Phase System
50ms
40
36V, 13.3A, typ.
36V, 13.3A, min.
30
20
36V, 26.7A, typ.
36V, 26.7A, min.
10
Input Voltage
0
320 360 400 440 3x480Vac
Fig. 24-7
Efficiency vs. output current at 36V
Efficiency for Use on only
Two Legs of a 3-Phase System
96%
95
94
2x480Vac
2x400Vac
93
Output Current
92
3 6 9 12 15 18 21 24 27A
Fig. 24-8
Losses vs. output current at 36V
Power Losses for Use on only
Two Legs of a 3-Phase System
60W
2x400Vac
50
40
2x480Vac
30
20
Output Current
10
0 3 6 9 12 15 18 21 24 27A
Dec. 2016 / Rev. 1.3 DS-QT40.361-EN
All parameters are specified at 36V, 26.7A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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