PULS
24 V dc 20A UPS for external battery 3.9-130 Ah
The UB20.241 uninterruptible power supply controller (DC-UPS) is used in addition with a 24V power supply and batteries to bridge power failures or voltage fluctuations. This configuration can prevent expensive downtimes, long restart cycles and loss of data.
A unique feature of the UB20 series is the constant voltage in battery mode, which will not change as the batteries discharge. The buffer voltage in battery mode can be set to four different output values. Another feature is the utilization of two independent battery chargers for the two 12V-batteries in series. This feature makes matching batteries unnecessary and allows for precise battery charging, testing and optimized usage of the battery capacity to achieve the longest battery service life.
The UB20.241 includes many battery diagnostic functions that ensure a reliable operation of the entire system. Furthermore, a temperature controlled charging
extends the life of the batteries. It also includes a selectable buffer time limiter as well as ready, buffering and replace battery contacts. For safety and
maintenance, an inhibit input signal is included which prevents a battery backup.
- Load current 20 A
- Control of each individual battery
- Selectable output voltage in battery mode
- Temperature compensated charging
- Relay outputs for status
Selected variant
Technical data
Input data |
|
|---|---|
| Input voltage from the unit | 24 V DC |
| Input voltage from the battery | 24 V DC |
| Input voltage for battery connection | 22,8 V DC |
| Input current during charging | 3,4 A |
Output data |
|
| Output current at 24 V dc | 20 A |
| Output voltage for battery operation | 22,5 |
| Output voltage normal operation | 24 V DC |
| Output current for battery operation max | 20 A (30 A @ 4 s) |
| Output current during operation max | 25 A |
Efficiency / Lifetime / MTBF |
|
| Efficiency | 99 % |
| Life span | 122 000 h @ 20 A, 40 °C |
| MTBF (IEC 61709) | 649 000 h @ 20 A, 40 °C |
Dimensions |
|
| Width | 49 mm |
| Height | 124 mm |
*Invisible Heading* |
|
|---|---|
| Depth | 117 mm |
| Weight | 0,7 kg |
Other |
|
| Approvals | ABS, CB, CE, CSA, CSA US, EX, GL, IECEx, UL |
| IP class | IP20 |
| Charging the battery type | 3 A |
| Material protection | Aluminium |
| Ripple max | 120 mV pp |
| Voltage level for battery connection | 24 V DC |
| Power drop from +60 °C to + 70 °C | 12 W/°C |
| Temperature min without derating | -40 °C |
| Temperature max without derating | 60 °C |
| Permitted battery sizes | 3,9-150 Ah |
| Type Power Supply | DC-UPS |
Product description
The UB20.241 uninterruptible power supply controller (DC-UPS) is used in addition with a 24V power supply and batteries to bridge power failures or voltage fluctuations. This configuration can prevent expensive downtimes, long restart cycles and loss of data.
A unique feature of the UB20 series is the constant voltage in battery mode, which will not change as the batteries discharge. The buffer voltage in battery mode can be set to four different output values. Another feature is the utilization of two independent battery chargers for the two 12V-batteries in series. This feature makes matching batteries unnecessary and allows for precise battery charging, testing and optimized usage of the battery capacity to achieve the longest battery service life.
The UB20.241 includes many battery diagnostic functions that ensure a reliable operation of the entire system. Furthermore, a temperature controlled charging
extends the life of the batteries. It also includes a selectable buffer time limiter as well as ready, buffering and replace battery contacts. For safety and
maintenance, an inhibit input signal is included which prevents a battery backup.
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