Datasheet

QT40.241
Q-Series
24V, 40A, THREE PHASE INPUT
25. ACCESSORIES
25.1. ZM2.WALL - WALL MOUNTING BRACKET
This bracket is used to mount specific
DIMENSION units onto a flat surface without
utilizing a DIN-Rail.
25.2. BUFFER MODULE - UF20.241
This buffer unit is a supplementary device for DC 24V power supplies. It delivers
power to bridge typical mains failures or
extends the hold-up time after turn-off of
the AC power. In times when the power
supply provides sufficient voltages, the
buffer unit stores energy in integrated
electrolytic capacitors. In case of mains
voltage fault, this energy is released again in a regulated process. One buffer
module can deliver 20A. To buffer the full output current of 40A, two buffer
modules are needed in parallel.
DC
Buffer
Unit(s)
Power
Supply
Load
AC
+
-
The buffer unit does not require any control wiring. It can be added in parallel to
the load circuit at any given point. Buffer units can be added in parallel to increase
the output ampacity or the hold-up time.
YR80.241
Redundancy
Module
+ - + -
Input
1
Input
2
Output
24V
40A
Load
Failure
Monitor
L1 L2 L3 PE
+ +
- -
24V, 40A
Parallel Use
Single Use
DC-
OK
QT40.241
24-28V 960W
Power Supply
L1 L2 L3 PE
+ +
- -
24V, 40A
Parallel Use
Single Use
DC-
OK
QT40.241
24-28V 960W
Power Supply
L1
L2
PE
I I II I I
L3
25.3. YR80.241 - REDUNDANCY MODULES
The YR80.241 redundancy module is a
unit in the YR-series, that is also
suitable in combination with power
supplies, which have a continuous
current overload behavior.
The YRH80.241 is the preferred
redundancy module for the QT40.241
power supply. It is equipped with two
input channels, which are individually
decoupled by utilizing mosfet
technology. Using mosfets instead of diodes reduces the heat
generation and the voltage drop between input and output.
The YR80.241 unit does not require an additional auxiliary
voltage and is self-powered even in case of a short circuit across
the output.
Due to the low power losses, the unit is very slender and only requires 46mm width on the DIN-rail. No space needed
between the QT40 power supplies and the redundancy module.
Nov. 2012 / Rev. 2.0 DS-QT40.241-EN
All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
20/27