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QT20 Power Supply Instruction Manual
Parallel Operation
Power
Supply A
Fuse
*)
AC
+
-
DC
Power
Supply B
*)
Fuse
AC
+
-
DC
Serial Operation
Power
Supply A
AC
+
-
DC
Power
Supply B
AC
+
-
DC
Earth
(see notes)
Check touch current (earth leakage current)! The total touch current is the sum of
the touch currents of all units. Safety limits – depending on the field of application -
apply for the allowed touch current!
EMC
The device is suitable for applications in industrial environment as well as in residential,
commercial and light industry environment without any restrictions.
For further details see datasheet.
EMC Immunity
EN 61000-6-1, EN 61000-6-2
EMC Emission
EN 61000-3-2, EN 61000-3-3, EN 61000-6-3, EN 61000-6-4,
FCC Part 15 Class B
This device complies with FCC Part 15 rules. Operation is subjected to following two
conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
CE mark in conformance with EMC guideline 89/336/EEC and 93/68/EEC and low-voltage directive (LVD) 73/23/EWG.
Terminals and Connections
open
1.
Insert the wire
Physical Dimensions, Indicators and Cooling
Width
65mm / 2.56''
Height
124mm / 4.88''
Depth
127mm / 5.0''
Weight
870g / 1.92lb
Use DIN-rails according to EN 60715 or EN 50022
DIN-Rail
with a height of 7.5 or 15mm
Mounting
Output terminal on top and input terminals on the bottom.
Orientation
For other orientations see datasheet.
Indicators
Normal operating mode
®
BonusPower
operation
Overload (V
< 90%)
OUT
Short-circuit (V
= 0)
OUT
Temperature shut-down
No input power
PU-347.010.00-10B
(1) Use only power supplies from the same
Dimension Q-series.
(2) Adjust the output voltages of all power
supplies to approximately the same value
(±500mV). Otherwise, the DC-ok signal
might not work properly.
(3) A fuse (or diode) on the output is only
+
required if more than three units are
Load
connected in parallel.
-
(4) Keep an installation clearance of 15mm
(left/right) between two power supplies and
avoid installing the power supplies on top of
each other.
(1) It is possible to connect as many units in
series as needed, providing the sum of the
output voltage does not exceed 150Vdc.
(2) Voltages with a potential above 60Vdc
are not SELV any more and can be
dangerous. Such voltages must be installed
with a protection against touching.
+
(3) For serial operation use power supplies
Load
of the same type.
-
(4) Earthing of the output is required when
the sum of the output voltage is above
60Vdc.
(5) Keep an installation clearance of 15mm
(left/right) between two power supplies and
avoid installing the power supplies on top of
each other.
close
2.
Snap the lever
plus DIN-rail depth
DC-ok LED
Overload
DC-ok
(green)
lamp (red)
Relay
ON
OFF
Closed
ON
OFF
Closed
OFF
ON
Open
OFF
ON
Open
OFF
ON
Open
OFF
OFF
Open
Operation on Two Phases
L1
L3
L2
(1) Operation on two phases is specified.
(2) Reduce output power according to curve. Exceeding the limits results in a thermal shut-down.
(3) The specification for EMC performance, hold-up time, losses and output ripple will no longer
be valid. Check suitability individually in the application.
Safety
Separation of output
Touch current
Isolation resistance
PE resistance
Transformer
Approvals
Terminals
Input
Type
Bi-stable, quick-connect spring clamp terminals
Ferrules
Allowed, but not required
Solid wire
0.5-6mm
Stranded wire
0.5-4mm
AWG
AWG 20-10
Stripping length
10mm / 0.4inch
Pull-out force
10AWG:80N, 12AWG:60N, 14AWG:50N, 16AWG:40N (UL486E)
Use appropriate copper cables that are designed for an operating temperatures of 60°C (for ambient
up to 45°C) and 75°C (for ambient up to 60°C), minimum. Follow national installation codes and
regulations! Ensure that all strands of a stranded wire enter the terminal connection! Up to two
stranded wires with the same cross section are permitted in one connection point (except PE wire). Do
not use without PE (Ground) connection!
Air flow
Do not obstruct air flow! The unit is convection cooled. Ventilation grid must be kept free of any obstructions.
Keep installation clearances at higher ambient temperature and full load:
40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded
permanently with full power. In case the adjacent device is a heat source, 15mm clearance are recommended.
P
OUT
100%
Fuse
75%
L1
50%
L2
25%
L3
open
0%
PE
DC
-30°C -10°C 10°C 30°C 50°C 70°C
SELV
IEC/EN 60950-1
PELV
EN 60204-1, EN 50178, IEC 60364-4-41
max. 0.7mA
Earth leakages current, TN- mains
min. 5MOhm
Input to output, 500Vdc
max. 0.1Ohm
Between housing and ground terminal
Safety transformer according to IEC/EN 61558-2-17
See datasheet or markings on the unit
Output
2
2
0.5-6mm
2
2
0.5-4mm
AWG 20-10
2AC 460 to 550V
2AC 340 to 460V
DC-ok
2
0.5-6mm
2
0.5-4mm
AWG 20-10
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