DC Power Systems and Battery Chargers
Delta Eltek Flatpack2 24Vdc HE Rectifier Module (1800W)
High Efficiency Power Conversion for 24VDC Backup Systems. The Eltek Flatpack2 24V HE Rectifier Module delivers exceptional performance and reliability in a compact, high-density form factor. With a power output of 1800W and industry-leading 95% peak efficiency, this rectifier is purpose-built for 24V lead-acid battery systems in critical infrastructure applications such as railway, metro, and power utilities.
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Features
- Adjustable Output Range (21.75V – 28.8V): Fine-tune output to match a wide variety of 24VDC system requirements with precision.
- Low Ripple and Noise: Ripple <250mV peak-to-peak and psophometric noise <2mVRMS ensures clean, stable DC output ideal for sensitive equipment.
- Wide Input Compatibility: Accepts AC or DC input from 85–300V, including operation at 0 Hz, providing maximum flexibility in diverse infrastructure setups.
- Hot-Pluggable Design: Enables fast replacement or scaling with no interruption to live systems—ideal for critical uptime environments.
- Advanced Protective Features: Includes overvoltage shutdown, short-circuit proofing, inrush current limiting, and high temperature shutdown to protect equipment and batteries.
- LED Status & CAN Bus Monitoring: Integrated status LEDs and CAN communication provide real-time fault monitoring and system integration with Smartpack controllers.
Specifications
Downloads
| MANUFACTURER PART NUMBER | |
|---|---|
| Model | Flatpack2 24V / 1800W HE |
| Manufacturer Part Number | 241115.205 |
| INPUT DATA | |
|---|---|
| Voltage (Nominal) | 185...275Vac / 185...300Vdc |
| Voltage (Range) | 85...300Vac / 85...300Vdc |
| Frequency | 45...66Hz, 15...18.5Hz¹ / 0Hz |
| Maximum Current (@Nominal Input, Full Load) | 11.25Arms |
| Protection | Fuse in both lines, varistor for transient protection, shutdown when Vin is out of range |
| Note | ¹ Maximum power de-rated to 1000W @230Vac & 16 2/3Hz input |
| OUTPUT DATA | |
|---|---|
| Output Voltage (Default) | 26.75Vdc |
| Output Voltage (Adjustable Range) | 21.75...28.8Vdc |
| Power (Maximum) | 1800W |
| Power @ 85Vdc | 750W |
| Maximum Current (@Vout ≤ 24Vdc) | 75A |
| Hold-Up Time (Default voltage + 1000W Load) | 20ms, Vout >21Vdc |
| Current Sharing | ± 5% of maximum current from 10 to 100% load |
| Static voltage regulation (10-100% load) | ±0.5% from 10 - 100% load and supplied power not limited by PV panels |
| Dynamic voltage regulation | |
| Ripple (30MHz bandwidth) | < 250 mVPP, 30MHz bandwidth |
| Psophometric Noise | < 2 mVrms |
| Static Voltage regulation | ±0.5% for 10 - 100% load |
| Dynamic Voltage regulation | ±5.0% for 10-90% or 90-10% load variation, regulation time < 50ms |
| Protection | Overvoltage shutdown, short circuit proof, high temperature, hot plug-in inrush current limiting |
| Peak Efficiency (@Nom. Input) | 95% |
| DISPLAY / ALARMS | |
|---|---|
| Alarms: | Via Red LED: Low mains shutdown, High and low temperature shutdown, Rectifier Failure, Overvoltage shutdown on output, Fan failure, Low voltage alarm, CAN bus failure |
| Warnings: | Via Yellow LED: Rectifier in power derate mode, Remote battery current limit activated, Input voltage out of range, flashing at overvoltage |
| Normal Operation (Input/Output OK): | Indicated Via Green LED |
| ENVIRONMENTAL | |
|---|---|
| Cooling | Fan Assisted |
| MTBF (Telcordia SR-332 Issue I method III (a)) | >300 000 (@ T ambient: 25 °C) |
| Operating Temp. (5-95% RH n.cond. hum.) | -40 to + 75°C |
|
Operating Temperature (°C)
|
0...45°C: 100% Rated Power (1800W) > 45°C: D-Rated to 1200W @ 75°C |
| Storage Temperature (°C) | -40 to +85°C; Humidity: 0 - 99% RH non-condensing |
| MECHANICAL | ||
|---|---|---|
| Dimensions [WxHxD] | 109 x 41.5 x 327mm | |
| Weight | < 1.95Kg | |
| DESIGN STANDARDS | |
|---|---|
| Isolation | 4.2 kVDC – input and output, 2.5 kVDC – input earth, 0.5 kVDC – output earth |
| Electrical safety | EN 62368-1:2020+A11:2020, IEC 62368-1:2018, IEC 60950-1:2005+A2:2013 UL 62368-1:2019 , CSA C22.2 No.62368-1:2019 |
| EMC | EN IEC 61000-6-1:2019, -6-2:2019, -6-4:2019, IEC 61000-6-5:2015 EN 61000-6-3:2007 + A1:2011/AC:2012, ETSI EN 300 386:2020 EN 60945 : 2002 + Cor.1:2008, FCC CFR 47 Part 15 |
| Environment | ETSI EN 300 019: 2-1 (Class 1.2) & 2-2 (Class 2.3) EU 2015/863 (RoHS), 2012/19/EU (WEEE), IEC 63000:2018, EN IEC 62474:2019 Normal operating conditions as per IEC 62040-5-3:2016 clause 4.2. Other operating conditions as per IEC 62040-5-3:2016 clause 4.3, must be advised |
| MANUFACTURER PART NUMBER | |
|---|---|
| Model | Flatpack2 24V / 1800W HE |
| Manufacturer Part Number | 241115.205 |
| INPUT DATA | |
|---|---|
| Voltage (Nominal) | 185...275Vac / 185...300Vdc |
| Voltage (Range) | 85...300Vac / 85...300Vdc |
| Frequency | 45...66Hz, 15...18.5Hz¹ / 0Hz |
| Maximum Current (@Nominal Input, Full Load) | 11.25Arms |
| Protection | Fuse in both lines, varistor for transient protection, shutdown when Vin is out of range |
| Note | ¹ Maximum power de-rated to 1000W @230Vac & 16 2/3Hz input |
| OUTPUT DATA | |
|---|---|
| Output Voltage (Default) | 26.75Vdc |
| Output Voltage (Adjustable Range) | 21.75...28.8Vdc |
| Power (Maximum) | 1800W |
| Power @ 85Vdc | 750W |
| Maximum Current (@Vout ≤ 24Vdc) | 75A |
| Hold-Up Time (Default voltage + 1000W Load) | 20ms, Vout >21Vdc |
| Current Sharing | ± 5% of maximum current from 10 to 100% load |
| Static voltage regulation (10-100% load) | ±0.5% from 10 - 100% load and supplied power not limited by PV panels |
| Dynamic voltage regulation | |
| Ripple (30MHz bandwidth) | < 250 mVPP, 30MHz bandwidth |
| Psophometric Noise | < 2 mVrms |
| Static Voltage regulation | ±0.5% for 10 - 100% load |
| Dynamic Voltage regulation | ±5.0% for 10-90% or 90-10% load variation, regulation time < 50ms |
| Protection | Overvoltage shutdown, short circuit proof, high temperature, hot plug-in inrush current limiting |
| Peak Efficiency (@Nom. Input) | 95% |
| DISPLAY / ALARMS | |
|---|---|
| Alarms: | Via Red LED: Low mains shutdown, High and low temperature shutdown, Rectifier Failure, Overvoltage shutdown on output, Fan failure, Low voltage alarm, CAN bus failure |
| Warnings: | Via Yellow LED: Rectifier in power derate mode, Remote battery current limit activated, Input voltage out of range, flashing at overvoltage |
| Normal Operation (Input/Output OK): | Indicated Via Green LED |
| ENVIRONMENTAL | |
|---|---|
| Cooling | Fan Assisted |
| MTBF (Telcordia SR-332 Issue I method III (a)) | >300 000 (@ T ambient: 25 °C) |
| Operating Temp. (5-95% RH n.cond. hum.) | -40 to + 75°C |
|
Operating Temperature (°C)
|
0...45°C: 100% Rated Power (1800W) > 45°C: D-Rated to 1200W @ 75°C |
| Storage Temperature (°C) | -40 to +85°C; Humidity: 0 - 99% RH non-condensing |
| MECHANICAL | ||
|---|---|---|
| Dimensions [WxHxD] | 109 x 41.5 x 327mm | |
| Weight | < 1.95Kg | |
| DESIGN STANDARDS | |
|---|---|
| Isolation | 4.2 kVDC – input and output, 2.5 kVDC – input earth, 0.5 kVDC – output earth |
| Electrical safety | EN 62368-1:2020+A11:2020, IEC 62368-1:2018, IEC 60950-1:2005+A2:2013 UL 62368-1:2019 , CSA C22.2 No.62368-1:2019 |
| EMC | EN IEC 61000-6-1:2019, -6-2:2019, -6-4:2019, IEC 61000-6-5:2015 EN 61000-6-3:2007 + A1:2011/AC:2012, ETSI EN 300 386:2020 EN 60945 : 2002 + Cor.1:2008, FCC CFR 47 Part 15 |
| Environment | ETSI EN 300 019: 2-1 (Class 1.2) & 2-2 (Class 2.3) EU 2015/863 (RoHS), 2012/19/EU (WEEE), IEC 63000:2018, EN IEC 62474:2019 Normal operating conditions as per IEC 62040-5-3:2016 clause 4.2. Other operating conditions as per IEC 62040-5-3:2016 clause 4.3, must be advised |
Find the Right Model
| Model Number | Input Voltage (Vac) | Output Voltage (Vdc) | Max. Output Power (W / kW) | ||
|---|---|---|---|---|---|
|
Flatpack2 24V / 1800W HE | Nom. 185...275Vac / 185...300Vdc | 27.6Vdc (Adj. 21.75...28.8Vdc) | 1800W |
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