3 Description of the eSite x10

3.1 eSite x10 introduction

The eSite x10 is a hybrid power unit that supplies a load with stable power by combining software-defined hybrid battery control with solar power, intelligent grid power harvesting and/or optimal genset control. The preconfiguration lets up to three tenants with separate load measurements connect to the eSite x10. The site configuration depends on the site prerequisites.

The eSite x10 can be supplied with AC power from genset and grid and with DC supply from solar panels. The supplied power is used to carry the customer load and to charge a battery bank. The AC supply is converted through rectifiers in the Main Compartment into -48V DC. The switching between the connected power sources is automatic. The DC supply is converted through solar converters in the Main Compartment into -48V DC. The eSite x10 starts and stops the genset automatically based on the state of the battery bank and the associated charge strategy. If solar arrays are part of the configuration, they are always in operation and supplies power when the weather conditions are right.

The Main Compartment contains all central parts and functions of the eSite x10. The Main Compartment is sealed and tamper-proof, and preconfigured when supplied. The Main Compartment does not contain serviceable parts.

The Connection Compartment is the only connection point access to the eSite x10. The Connection Compartment is designed to make power connectivity simple and intuitive, facilitating a smooth and easy installation/site commissioning of the system.

Warning

Do not open or make modifications to the Main Compartment. This is strictly prohibited and can be a threat to life.

Caution

If there is a failure or performance deviation, the Main Compartment must be sent to the nearest eSite Power Systems approved service centre.

Caution

The Main Compartment must be connected to the Connection Compartment only unless a written statement from eSite Power Systems permits other connectivity devices. No third party connection device may be used without explicit consent and approval by eSite Power Systems. The Connection Compartment and the power connectivity is subject to regulatory control by eSite Power Systems.

Figure 3.1 shows an overview of a mounted eSite x10 unit with the most important features identified as follows.

A Mounting Frame B Main Compartment including Lower Main C Product marking plate D Visual indication – green LED E Visual indication – red LED F Connection Compartment G Connection Compartment lid

Figure 3.1. The eSite x10 system with Main Compartment and Connection Compartment

Figure 3.2 shows an overview of a complete site setup with the eSite x10 and associated systems on site, identified as follows.

A eSite x10 B eSite Tools C Genset D Solar panels E Grid F Battery cabinet and battery bank G Customer load

Figure 3.2. Complete setup with the eSite x10, eSite Tools, associated systems, and customer load

3.2 Technical specifications

AC Input
Nominal AC input	230–250 V AC
Permitted AC input range	85–300 V AC
Frequency	45–65 Hz
Input current	3 x 19 A
Power factor	>0.99
THD	<5 % at 230 V AC, 100 % load
Input voltage derating	Linear derating for each phase, 3500 W @ 190 V AC, 1500W @ 85V
Protection	Varistor transient protection of all phases towards neutral. Varistor and GDT transient protection towards protective earth. Solid state transfer switch for long duration over voltages.

DC Output
Operational range	-42 – -58 V DC
Rectifier capacity	3 x 3500 W
Output power	10500 W
Current	195 A @ 54 V
Max current	235 A
Output Power Derating by Ambient Temperature, Continuous Operation (230 V AC)	Continuous power at 45 ⁰C: 9750 W Continuous power at 50 ⁰C: 8500 W
Output Power Derating by Ambient Temperature, Cyclic Operation (230 VAC). Full power is available again after a cooling period of ~45 min.	Full power at 45 ⁰C for 65 min, then derating to 9750 W Full power at 50 ⁰C for 40 min, then derating to 8500 W
Rectifier peak efficiency	95 %*
DC power system efficiency	94 %
DC power port for Low Priority Load	7000 W
DC power port for High Priority Load	3000 W

*The value includes an integrated static transfer switch.

Solar Converter
Nominal input voltage	125 V DC
Permitted input voltage range	50–150 V DC
Maximum input current	3 x 20 A
Power conversion capacity	6,6 kW
Power conversion peak efficiency	> 96.5 %

Environmental
Nominal Temperature	- 20 – + 45 °C
Operating Temperature	- 20 – + 50 °C
Storage Temperature	- 40 – + 70 °C
Relative Humidity	0–99 %
Cooling	Passive Convection Cooling
IP Code	Main Compartment IP65 Connection Compartment: IPx4
EMC	ETSI EN 300 386 V1.6.1
Safety	IEC/EN 60950-1:2005+A1+A11+A12+A IEC/EN 60950-22:2006-A
Environmental standards	ETSI 300 019-1-2 Class 2.3 Public Transportation ETSI 300 019-1-4 Class 4.2H Stationary use at non-weather protected locations – extremely warm and dry CE and RoHS compliant.
MTBF	>350 000 h (@T ambient 25 °C) according to Siemens SN29500

Communication ports
I/O	4 Digital outputs; 8 Digital inputs; 4 Analog inputs
External Bus	CAN; RS485; Ethernet
WLAN	Wi-Fi access point as service interface; SMA Connector
Radio modem	UMTS/HSPA: 850/900/1900/2100 MHz GSM/GPRS/EDGE: 50/900/1800/1900 MHz
Service port	Ethernet
Isolation	3.0 kV AC mains – Earth 1.5 kV AC mains – Sec 707 V DC mains – Earth

Figures 3.3 and 3.4 shows the rectifier characteristics for derating due to high temperature and power efficiency.

Figure 3.3. Power derating vs input voltage (@T < 45 °C)

Figure 3.4. Rectifier efficiency vs converted power

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