3 eSite Modular
3.1 Overview
The eSite Modular system is a telecom site power system designed according to telecom standards to provide stable, low-maintenance site operation at low TCO. The system is built to fit a variety of site types and customer load sizes, able to withstand harsh outdoor conditions and achieve maximum uptime of the customer load.
The system can be provided with AC power supply from a genset and/or a grid connection and with DC power supply from a set of solar arrays. The AC power supply is converted into -48 V DC through AC/DC rectifiers. If more than one AC source is connected, switching between the connected power sources is performed automatically through the patented silicone controlled rectifier (SCR) functionality.
The solar DC power supply is converted into -48 V DC through internal solar DC/DC converters. If solar arrays are installed, they are under regulation from the internal solar converters at all times and will supply power when the weather conditions allow.
The supplied power is used to support the customer load and to charge a battery bank.
The eSite Modular system setup consists of
1 Remote Monitoring and Control (RMC) unit
1, 2 or 3 Converter Units (RE, RSE, SE)
1 Power Combiner Unit (PCU)
A battery bank
A purpose-built cabinet housing all of the above
All communication handling, site monitoring and system controls are performed in the RMC controller unit.
The RMC controller unit (see figure 3.1) contains
Main Controller
Wi-Fi module
3G/4G modem
Ethernet LAN port
Digital In/Out ports
Analogue In/Out ports
CAN/RS485 connection ports
The Converter Unit (see figure 3.2) contains:
Rectifier (3,3 kW) x 3 (RE, RSE)
Solar converter (2,2 kW) x 3 (RSE) or x 6 (SE)
SCR functionality (replaces standard ATS) for AC power source switching
Current, voltage, frequency and temperature sensors
The Power Combiner Unit (see figure 3.3) contains the connection points and MCB breakers for all DC power connections to the RMC, Li-ion battery bank, Converter Units, cabinet fans and customer load. In the standard design, the PCU is equipped to support 2 Converter Units, 4 Tenants and a battery bank of 10 BMUs.
A complete eSite Modular system setup with all components integrated to a cabinet is shown in figure 3.4.
3.2 Options
The list below outlines the options that are referenced in this manual. For a complete description of available options, compatibility between options and what is included in each option package, a specific options document may be requested from eSite Power Systems.
3.2.1 Standard options
Second AC source support package
Enables connection of a second AC source. Switch between sources with solid state electronics. Current, voltage and frequency measurements are measured separately.
Solar package
Include 6.6 kW solar converters. Advanced Solar MPPT control, Green Power Influx.
Hybrid functionality package
Genset management, Night Silence function, Genset Exercise run, Battery Charge strategies (Voltage Cycle, Static-SOC, Partial-SOC), Battery Monitoring (SOC, Battery capacity), UPS AC mode, Configurable Modbus client (AMF panels).
Advanced Fuel Monitoring package
Pressure-based fuel level sensor for monitoring fuel consumption and anti-theft control.
Multi-tenant Monitoring package
Individual DC output monitoring: Up to 10 x Tenant current measurement sensor. Tenant identification and energy consumption analysis.
Auxiliary Communication Interfaces package
SNMP
eSite Tools package
FOTA (Firmware Over-the-Air) upgrades, Remote configuration (eSite Tools), Remote monitoring, Alarm/Error event to NOC, Report services, Diagnostics.
Cabinet Cooling package
Support for battery cabinet cooling equipment with Delta Ambient and Battery Temp Level control options.
3.2.2 Custom specific options
Some options/features may be received as additional SW patches. This may apply for already existing features or new features developed and customized upon request, based on customer requirements in coordination with the eSite development team.
Custom specific options are normally disabled from the standard software implementation by default and are not visible in any UI.
Contact eSite Power Systems to get more information regarding custom specific options.
Full Li-ion integration (any brand), Battery Charge strategies (Lion)
Full integration (any brand)
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