Delta Eltek 2U / 3U Solar Shelf Extension Kit (6.4kW / 12.8kW)
The Delta Eltek Solar Extension Shelves provide a compact and engineered solution for integrating solar PV input into new or existing Flatpack2 and Flatpack S DC power systems. Available in two configurations — a 2U shelf supporting up to 6.4kW and a 3U shelf supporting up to 12.8kW of installed PV — each is designed to house the Flatpack2 48/32...
Read MoreThe Delta Eltek Solar Extension Shelves provide a compact and engineered solution for integrating solar PV input into new or existing Flatpack2 and Flatpack S DC power systems. Available in two configurations — a 2U shelf supporting up to 6.4kW and a 3U shelf supporting up to 12.8kW of installed PV — each is designed to house the Flatpack2 48/3200 HE Solar Converter (MPPT) modules.
These extension shelves provide hot-pluggable slots for MPPT modules, PV isolators, optional DC surge protection devices (SPDs), and a dedicated PV connection panel equipped with MC4 connectors. Designed for use within both indoor and outdoor enclosures, they simplify the addition of solar energy into hybrid or standalone telecom and industrial energy systems.
Powerbox Australia offers system design guidance, integration support and local stock, to help you deploy Delta Eltek solar power solutions with confidence. Contact us today!
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Features
- Built for Hybrid & Off-Grid Sites: Supports solar autonomous systems or hybrid setups alongside diesel or grid power, ideal for remote telecom locations.
- Expandable Power Options: Choose between 2U (up to 2 modules / 6.4kW) or 3U (up to 4 modules / 12.8kW) configurations to match your load demands.
- Integrated PV Connectivity: Includes MC4 connectors, front/rear access, and 2-pole service switches for easy, standards-compliant PV array integration.
- Hot-Pluggable Solar Chargers: Enables live installation or replacement of Flatpack2 HE solar modules without system downtime.
- Advanced MPPT & Protection: Delivers fast and reliable solar harvesting with earth fault detection, reverse polarity protection, and optional DC SPD.
- Optimised for Telecom Applications: Perfect for radio base stations, cell sites, broadband nodes, and FTTx infrastructure requiring reliable solar backup.
Specifications
| MANUFACTURER PART NUMBER | ||
|---|---|---|
| Model | 2U Solar Extension Kit (6.4 kW) | 3U Solar Extension Kit (12.8 kW) |
| Manufacturer Part Number | CTZ00000.1358 | CTZ00000.1255 |
| POWER MODULES | ||
|---|---|---|
| Model | 2U Solar Extension Kit (6.4 kW) | 3U Solar Extension Kit (12.8 kW) |
| Flatpack2 Solar Charger (1) | Flatpack2 48/3200 HE Solar | |
| Peak efficiency | 97% | |
| Max no. of modules | Up to 2pcs | Up to 4pcs |
| Note | 1) See Flatpack2 Solar charger datasheet for details | |
| INPUT DATA (SOLAR CHARGER) | |
|---|---|
| Voltage (operating range) | 85-420Vdc |
| Voltage (MPPT range) 2) | 100-380Vdc |
| Voltage (start-up) | 150Vdc |
| Maximum current | 20.3Adc |
| Protection | Fuse, varistor for transient protection, reversed polarity, shutdown when VIN is too low, earth fault check during start-up |
| Note | 2) At nominal output voltages. MPPT will operate down to 100V, but the maximum input current limitation will de-rate maximum output power |
| PV CONNECTION PANEL | ||
|---|---|---|
| Model | 2U Solar Extension Kit (6.4 kW) | 3U Solar Extension Kit (12.8 kW) |
| Service switches for PV arrays | 2 pcs 2-pole | 4 pcs 2-pole |
| MC4 connectors | 4 pcs (2 pcs per one PV array) | 8 pcs (2 pcs per one PV array) |
| DC SPD (option) | Up to 2 pcs (Type 1+2) | Up to 4 pcs (Type 2) |
| OUTPUT DATA | ||
|---|---|---|
| Model | 2U Solar Extension Kit (6.4 kW) | 3U Solar Extension Kit (12.8 kW) |
| Voltage (default) | 53.5Vdc | |
| Voltage (adjustable range) | 42 (3) - 57.6 VDC | |
| Max power, VIN ≥ 170Vdc | 6400 W | 12800 W |
| Max current, @VOUT = 48Vdc | 133 A | 266 A |
| Protection | Overvoltage shutdown, short circuit proof, high temperature, hot plug-in inrush current limiting | |
| Note | (3) Stand-by / test operation (VOUT < 48 VDC) limited for VIN > 250 VDC | |
| ALARMS & WARNINGS | |
|---|---|
| Alarms (Red LED) | High and low temperature shutdown, Converter Failure, Overvoltage shutdown on output, Fan failure, Low voltage alarm, CAN bus failure |
| Warnings (Yellow LED) | Low input voltage, Converter in power derate mode, Remote current limit activated, Input voltage out of range, flashing at overvoltage |
| Normal (Green LED) | Input and output ok |
| ENVIRONMENT | |
|---|---|
| Operating temperature | -40 to +75 °C [-40 to +167 °F] (3) |
| Storage temperature | -40 to +85 °C [-40 to +185 °F] |
| Note | (3) Stand-by / test operation (VOUT < 48 VDC) limited for VIN > 250 VDC (4) +45 to +75 °C [+113 to +167 °F] with de-rated performance |
| MECHANICAL | ||
|---|---|---|
| Dimensions (W x D x H) (5) | 482 x 384 x 89 (2U) mm | 482 x 384 x 133 (3U) mm |
| Weight (excluding modules) | Approximately 7 kg | Approximately 10 kg |
| Note | (5) Recommended minimum cabinet depth is 400 mm [15.7 inch] | |
| DESIGN STANDARDS | |
|---|---|
| Electrical safety | EN 60950-1:2006/A2:2013, EN 62368-1:2020/A11:2020, EN 62109-1:2010/-2:2011 |
| EMC | ETSI EN 300 386 v1.3.2 EN 61000-6-1:2019, EN 61000-6-2:2019, EN 61000-6-3:2007/A1:2011/AC:2012, EN 61000-6-4:2019 |
| Environment | ETSI EN 300 019-2-1 v2.3.1:2017 (Class 1.2) ETSI EN 300 019-2-2 v2.4.1:2017 (Class 2.3) ETSI EN 300 019-2-3 v2.4.1:2015 (Class 3.2) ETSI EN 300 132-2 v2.6.1:2019 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 |
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.
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