ETB Controller™ Installation Instructions: Section 2 - Tesla Megapack 2XL w/ ETB Controller™
2.0 ETB Controller™ kit of parts
Specific to the Tesla Megapack 2XL (MP2XL) this EMS will be integrated with, you should have received the following parts directly from Energy Toolbase.
Note:
Installers need to supply shielded communications cabling, additional shielded-twisted CT extension cabling (when necessary), NEMA 4 rated conduit entry hubs, and some mounting bolts or screws.
2.1 ETB Control Center Introduction
The ETB Control Center is a 16" H x 16" W x 7.5" D enclosure that comes with everything mentioned above in the kit of parts, pre-installed inside the enclosure for your specific project.
2.1.1 Mounting ETB Control Center
The ETB Control Center is built in a NEMA 4X rated polyethylene enclosure that can be mounted inside of an electrical room or in an exterior location. To maintain outdoor rating all wiring connections must be made on the bottom of the enclosure. To maintain UL listing all low voltage wiring must be on the latch side of the box and all high voltage on the hinge side. The enclosure comes with mounting clips for easy installation on an wall or rack. While the enclosure is NEMA 4X rated, it is always best practice to avoid mounting the unit in direct sunlight to help prevent undue damage and accelerated aging of the system.
Figure 1 shows the dimensions of the enclosure along with the details of the mounting brackets provided. The enclosure weighs approximately 25lbs. and should be mounted with proper wall anchors or racking components rated for the weight.
Figure 1: Technical top, front, side, and bottom view of ETB Control Center
Please note the location of wiring entry locations.
These locations must be used to maintain outdoor rating and UL listing!
2.1.2 Power Source - ETB Control Center
The ETB Control Center is designed to accept 90-305VAC L-N power from a local circuit with a maximum draw of 100W. A transformer is also pre-wired inside the enclosure that will provide the 24V source for the PC, network switch, and other components, all backed by an Uninterruptible Power Supply (UPS).
2.2 SEL-735 Enclosure Introduction
2.2.1 Mounting SEL-735 Meter Enclosure
For more information about how to install the SEL-735 meter and the required software - please view the ETB Controller™ Installation Instructions: Section 3 - SEL-735 Configuration Guide for Tesla Sites.
Figure 2: Technical front (open), front (closed), and side view of SEL-735 Enclosure
2.2.2 Power Source - SEL-735 Meter
The SEL Meter Enclosure is designed to support three power supply options:
- High-voltage ac/dc supply (85–275 VDC, 85–264 VAC)
- Medium-voltage dc-only supply (19–58 VDC) (orange connector)
- Low-voltage dc-only supply (9.6–30 VDC) (orange connector, not available on color touchscreen models)
2.3 Local Device Networking Connections
Networking via Ethernet should be done as follows (in no particular order):
- ETB Control Center
- ETB Controller
- LAN 1 of the Karbon 410 PC should be connected to the dedicated internet connection (site internet or LTE modem - LTE plans available through ETB)
- LAN 2 of the Karbon 410 PC should be connected to the network switch in the ETB Control Center
*LAN 2 should arrive pre-wired, but it is good to check the connection.
- ETB Controller
- Tesla Site Controller Enclosure
- Tesla Site Controller (TSC)
- LAN 1 of TSC should be connected to the network switch in the ETB Control Center that feeds into LAN 2 of Karbon 410 PC
- LAN 2 should be connected to the Tesla Device Network Switch in the Tesla Site Controller Enclosure
- Tesla Site Controller (TSC)
- BESS
- Megapack Interface Bay
- Should be connected to the Tesla Device Network Switch that feeds into LAN 2 in the Tesla Site Controller Enclosure
- For the BESS communications, an additional CAT-6 cable must be installed from the Tesla Site Controller (TSC) to the device network switch. (please refer to ETB Controller_Tesla Wiring Diagram & Schematic_09292024 for details).
- Megapack Interface Bay
- Metering
- SEL-735 Meter(s)
- Each meter should be connected to the Tesla Device Network Switch in the Tesla Site Controller Enclosure
- SEL-735 Meter(s)
Note:
1) ETB Controller™ Installation Instructions: Section 4 outlines local networking/firewall requirements for device communications.