Fully Digital Controlled
Reduces component count and improves reliability
Modular Rectifier
ETR Series (ETR1524)
Rectifiers & Battery Chargers (DC UPS)
Modular Rectifiers/Battery Chargers (DC UPS)
- Modular SMPS Technology
- 3 & 1 Phase Configurable
- Hot-Swap
- 1500W per Module
- In-Built SNMP
ENETEK Modular Battery Chargers deliver advanced, high-efficiency DC power for telecom, industrial, and energy applications that demand reliability and flexibility. Designed with fully digital control and hot-swappable modular architecture, these chargers ensure continuous operation and seamless maintenance without system downtime.
- Output Current (Maximum)
- 62.5A @ 24Vdc, nominal input
- Peak Efficiency
- up to 95%
- AC Input Voltage Range
- 85 to 305Vac, 45Hz to 66Hz
- MTBF
- > 300,000hrs @ 25°C
Product Overview
Built for efficiency, durability, and smart performance, the ETR Series offers up to 96% efficiency, front-to-back airflow cooling, and wide operating temperature tolerance, ensuring dependable performance even in harsh environments. With excellent EMC compliance and scalable configuration options, the ENETEK ETR1524 and ETR3048 chargers provide stable, intelligent, and energy-efficient power conversion — the perfect solution for mission-critical DC systems where uptime and performance matter most.
Their wide input voltage range (85–305 VAC) and compact, high-density design make them ideal for both centralized and distributed power systems.
Technical Highlights
- Cutting-edge fully digital control for improved reliability
- Highly efficient operation with peak efficiency up to 97%
- Modular, scalable, and hot-swappable design for flexible installation
- High power density (up to 4500W in 1U height) for space optimization
- Wide input voltage range (85Vac to 305Vac) for demanding grid conditions
- Front-to-back airflow with temperature-regulated cooling fans
- Wide operating temperature range (-40°C to +75°C) for harsh climates
- Compliant with global standards: CE, RoHS, EN/IEC 62368-1, and ETSI EN 300 386
Key features
Highly Efficient @ up to 95%
Reduces losses and lowers operating costs
Front-to-back Airflow
Unobstructed scalability of shelves
Excellent EMC Performance
Lower interference and excellent susceptibility
Technical specifications
The table below is reproduced from the ENETEK ETR+ 1524 datasheet (P/No. 381090.100, Rev.1.1), which covers the single 1500W rectifier module.
| Model | 381090.100 |
|---|---|
| Capacity | 1500W |
| AC INPUT | |
| Voltage Range | 85Vac to 305Vac (Nominal @ 185Vac to 275Vac) |
| Voltage Range (DC) | 100Vdc to 305Vdc (Nominal @ 210Vdc to 275Vdc) |
| Frequency | 45Hz to 66Hz |
| Maximum Input Current | Max 9Arms @ 185Vac (full load) |
| Power Factor | ≥0.99 @ rated input and ≥50% load |
| Input Protection | Varistors for transient protection, Mains Fuse for both input lines Shutdown @ > 305Vac with hysteresis |
| DC OUTPUT | |
| Output Voltage | 27Vdc (adjustable 21Vdc to 29Vdc) |
| Output Power (Maximum) | 1500W @ nominal input |
| Output Current (Maximum) | 62.5A @ 24Vdc with nominal input |
| Peak Efficiency | up to 95% |
| Current Sharing | ≤±5% of max current from 20% to 100% load |
| Static Voltage Regulation | ≤±0.6% from 10% to 100% load |
| Dynamic Voltage Regulation | ≤±5% for 10%-90% or 90%-10% load variation, regulation time <50ms |
| Hold Up Time | >20ms; output voltage >22Vdc @ 750W |
| Ripple and Noise | ≤150mVp-p, 20MHz bandwidth ≤2mVrms psophometric |
| Output Protection | Overvoltage shutdown; hot plug-in, inrush current limiting; high temperature protection; short circuit proof |
| CONTROL and MONITORING | |
| Rectifier Alarm and Signaling | High & low mains shutdown, high temperature shutdwon, rectifier failure, overvoltage shutdown, fan failure, communication failure |
| Visual Indications | Alarms - RED Warning - YELLOW Normal operation - GREEN |
| OTHER SPECIFICATIONS | |
| Isolation | Input to Output: 3.0kVac, Input to Earth: 1.5kVac, Output to Earth: 0.5kVdc |
| Cooling | Fan-cooled, front to back airflow |
| Fan Speed | Regulated by temperature and output power |
| MTBF | > 300,000 hrs @ 25°C |
| ENVIRONMENTAL | |
| Operating Temperature Range | -40°C to +75°C (de-rates above 55°C) |
| Storage Temperature Range | -40°C to +85°C |
| Relative Humidity | Operating: 5% to 90% RH non-condensing Storage: 0% to 99% RH non-condensing |
| Acoustic Noise | ≤58dB @ full load, 25°C |
| PHYSICAL | |
| Dimensions WxDxH (mm) | 109 x 311 x 41 (1U) |
| Net Weight (kg) | ≤1.7 |
| DESIGN STANDARDS | |
| Electrical Safety | EN/IEC62368-1 |
| EMC | ETSI EN 300 386 V1.6.1 |
| Others | CE, RoHS compliant |
Due to continuous product development, specifications are subject to change without prior notice
Frequently asked questions
Answers taken from the ETR Series (ETR1524) datasheet.
What is the output power and current of the ETR 1524 rectifier module?
Each ETR+ 1524 module is rated 1500W at nominal input, with a maximum output current of 62.5A at 24Vdc with nominal input. The datasheet covers a single part number, 381090.100.
What AC input voltage range does the ETR 1524 accept, and can it run on DC?
The module accepts 85Vac to 305Vac (nominal @ 185Vac to 275Vac) at 45Hz to 66Hz. It also accepts a DC input of 100Vdc to 305Vdc (nominal @ 210Vdc to 275Vdc), and shuts down above 305Vac with hysteresis.
Is the ETR 1524 output voltage adjustable for 24V battery charging?
Output voltage is 27Vdc, adjustable from 21Vdc to 29Vdc. Static voltage regulation is ≤±0.6% from 10% to 100% load, and current sharing between modules is ≤±5% of max current from 20% to 100% load.
What is the operating temperature range of the ETR 1524 rectifier?
The operating temperature range is -40°C to +75°C, de-rating above 55°C, with storage from -40°C to +85°C. Operating humidity is 5% to 90% RH non-condensing, and acoustic noise is ≤58dB at full load, 25°C.
What alarms and status indications does the ETR 1524 provide?
The module signals high and low mains shutdown, high temperature shutdown, rectifier failure, overvoltage shutdown, fan failure and communication failure. Front-panel LEDs show alarms in red, warnings in yellow and normal operation in green.
Which safety and EMC standards does the ETR 1524 comply with?
Electrical safety is to EN/IEC62368-1 and EMC to ETSI EN 300 386 V1.6.1, and the module is CE and RoHS compliant. Isolation is 3.0kVac input to output, 1.5kVac input to earth and 0.5kVdc output to earth.
Documentation & downloads
Download the latest documentation for the ETR1524 Series. Files are provided in their current revision; contact us if you need a previous version or a localised translation.
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Download
Power Module Datasheet
Full technical specifications, and product features including all the options.
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Download
Power Module User's Manual
Step-by-step installation instructions, menu details, and operating procedures.
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Download
PC & Monitoring Software
Computer Program or Programs helps you to monitor or set the unit.
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Download
Controller User's Manual
Additional documentation that might be involved with this series.
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