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PULS
Pulse Dimension Q is a series power supply with very high performance and reliability.
QT40.241 have built primary fuses that make it possible to connect the unit without the need for intermediate fuses up to 32 A (UL) which saves space and money. The efficiency is high over a wide load range, which results in reduced power consumption and longer life regardless of load current. An average efficiency is 94.7% with a peak value of 95.3%. The power loss at idle is very low, 9.5 W.
The bonus power provides 50% extra reserve with retained 24 V dc (60 A) which is an advantage when connected loads have high starting currents and to bridge temporary current peaks. The bonus power is limited to 4 seconds to avoid constant overloading of the power supply and wiring. In addition to the bonus effect leave the unit a very high short-circuit current (ms) that helps to secondary fuses. See technical data for example.
Active transient ensure operation also in very störrik electrical environment and also has QT40.241 active inrush current protection, which means a very low starting current, even if the unit has been in operation for a longer time. Especially useful for redundant / parallel-connected systems.
Simple diagnostics via DC-OK relay that falls on the output voltage deviates more than 10% from the set value, a green LED indicates DC-OK, Red LED indicates overload.
The unit can also be remote controlled for on / off function, three different connection options available. See the "Technical data". Can be used instead of expensive DC contactors when you need to break up the 24 V side (NB. The remote control function has no safety circuit and therefore should not be used in the security context).
Active PFC reduces power consumption, harmonics close to zero, in addition, the power distribution in phases much smoother at power asymmetry.
Bonus power
The power supply has bonus power that enables high power extraction with retained 24 V DC for 4 seconds, which is a major advantage when connected loads have high starting currents, such as the case with motors. How often bonus power can be utilised depends on the application. With the following diagram and formula, the repeat time can be calculated for each application. The bonus power is available as soon as the power supply is started and directly after a short circuit.
We recommend free space of 40 mm above and 20 mm under the power supply, and 5 mm at the sides.
Bonus power | Operating cycle |
|
|
Po | Nominal load current |
Ppeak | Peak current |
To | Time between bonus power |
Tpeak | Peak current I time |
Operating cycle | Tpeak / (Tpeak + To) |
To= | Tpeak - (operating cycle * Tpeak) / operating cycle |
Example: Peak current (Ppeak) is 50 A =125%. The peak time is 3 seconds. Nominal load current (Po) is 30 A. 30 A =75% of Inom. According to the diagram, the operating cycle is about 0.45. To = 3 - (0.45 * 3) / 0.45 = 3.6. Maximum repeat time of bonus power is 3.6 seconds. | |
Output characteristic |
|
Remote control function |
|
Input data |
|
|---|---|
| Input voltage ac | 380-480 V |
| Input voltage ac min | 323 V AC |
| Input voltage ac max | 576 V AC |
| Inrush current at 400 V ac typical | 5 A |
| Input voltage range | Wide-range |
| Power factor at 400 V ac, full load. Typical | 0,88 |
| Number of phases | 3 |
Output data |
|
| Output voltage | 24 V DC |
| Output voltage min | 24 V DC |
| Output voltage max | 28 V DC |
| Output current | 40 A |
| Power | 960 W |
Efficiency / Lifetime / MTBF |
|
| Efficiency at 400 V ac, typical | 94,7 % |
| Efficiency at 400 V ac, full load, typical | 95,3 % |
| Lifetime at 400 V ac, full load and +40 ° C | 69000 h |
| MTBF (IEC 61709) 400 V ac, max loan, +40 °C | 375000 h |
Dimensions |
|
| Width | 110 mm |
| Height | 124 mm |
*Invisible Heading* |
|
|---|---|
| Depth | 127 mm |
| Weight | 1,5 kg |
Other |
|
| Approvals | CB, CE, CSA, GL, UL |
| Hold time at 400 V ac, typical full load | 25 ms |
| IP class | IP20 |
| Clamp type | Screw on |
| Material protection | Aluminium |
| Supply frequency | 50-60 ±6 % |
| Ripple max | 100 mV pp |
| Series | Dimension Q |
| Power consumption at 400 V ac | 1,65 A |
| Power drop from +60 °C to + 70 °C | 24 W/°C |
| Temperature min without derating | -25 °C |
| Temperature max without derating | 60 °C |
| Type Power Supply | AC-DC |
| DC relay output | Yes |
| Active Transient | Yes |
Pulse Dimension Q is a series power supply with very high performance and reliability.
QT40.241 have built primary fuses that make it possible to connect the unit without the need for intermediate fuses up to 32 A (UL) which saves space and money. The efficiency is high over a wide load range, which results in reduced power consumption and longer life regardless of load current. An average efficiency is 94.7% with a peak value of 95.3%. The power loss at idle is very low, 9.5 W.
The bonus power provides 50% extra reserve with retained 24 V dc (60 A) which is an advantage when connected loads have high starting currents and to bridge temporary current peaks. The bonus power is limited to 4 seconds to avoid constant overloading of the power supply and wiring. In addition to the bonus effect leave the unit a very high short-circuit current (ms) that helps to secondary fuses. See technical data for example.
Active transient ensure operation also in very störrik electrical environment and also has QT40.241 active inrush current protection, which means a very low starting current, even if the unit has been in operation for a longer time. Especially useful for redundant / parallel-connected systems.
Simple diagnostics via DC-OK relay that falls on the output voltage deviates more than 10% from the set value, a green LED indicates DC-OK, Red LED indicates overload.
The unit can also be remote controlled for on / off function, three different connection options available. See the "Technical data". Can be used instead of expensive DC contactors when you need to break up the 24 V side (NB. The remote control function has no safety circuit and therefore should not be used in the security context).
Active PFC reduces power consumption, harmonics close to zero, in addition, the power distribution in phases much smoother at power asymmetry.
Bonus power
The power supply has bonus power that enables high power extraction with retained 24 V DC for 4 seconds, which is a major advantage when connected loads have high starting currents, such as the case with motors. How often bonus power can be utilised depends on the application. With the following diagram and formula, the repeat time can be calculated for each application. The bonus power is available as soon as the power supply is started and directly after a short circuit.
We recommend free space of 40 mm above and 20 mm under the power supply, and 5 mm at the sides.
Bonus power | Operating cycle |
|
|
Po | Nominal load current |
Ppeak | Peak current |
To | Time between bonus power |
Tpeak | Peak current I time |
Operating cycle | Tpeak / (Tpeak + To) |
To= | Tpeak - (operating cycle * Tpeak) / operating cycle |
Example: Peak current (Ppeak) is 50 A =125%. The peak time is 3 seconds. Nominal load current (Po) is 30 A. 30 A =75% of Inom. According to the diagram, the operating cycle is about 0.45. To = 3 - (0.45 * 3) / 0.45 = 3.6. Maximum repeat time of bonus power is 3.6 seconds. | |
Output characteristic |
|
Remote control function |
|
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| Parts | Lifetime at 400 V ac, full load and +40 ° C | Approvals | Clamp type | Price | ||
|---|---|---|---|---|---|---|
PSU 3PH 380-480V ac I/P 24V dc 40A 960W O/P
Art:
QT40.241
Copied
|
69000 h
|
CB, CE, CSA, GL, UL
|
Screw on
|
| ||
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PSU 3PH 380-480V ac I/P 24V dc 40A 960W O/P Ext. Lifetime
Art:
QT40.242
Copied
|
93000 h
|
CB, CE, CSA, UL
|
Screw
|
|
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