3 Description of the eSite Modular system
3.1 eSite Modular introduction
The eSite Modular system consists of 1, 2 or 3 hybrid power Converter Units mounted on the exterior of a cabinet supplying a customer load with stable power by combining software-defined hybrid battery control with solar power, intelligent grid power harvesting and/or optimal genset control.
The interior of the cabinet houses the Remote Monitoring and Control (RMC) unit, the Power Combiner Unit (PCU) and the battery bank. Associated systems are connected to the eSite Modular system via connections points inside the cabinet.
The preconfiguration allows for up to 10 tenants with separate load measurements to simultaneously be connected to the eSite Modular system. The site configuration depends on the site prerequisites.
The eSite Modular system can be supplied with AC power from genset and grid and with DC power 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 ACDC rectifiers in the Converter Unit(s) into -48 V DC. The switching between the connected power sources is automatic. The DC supply is converted through DCDC solar converters in the Converter Unit(s) into -48 V DC. The RMC 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 will supply power when the weather conditions are right.
The Converter Unit contains the rectifiers and/or solar converters. The unit is sealed and tamper-proof, and preconfigured when delivered. The Converter Unit does not contain serviceable parts.
The RMC controller unit includes all major functionality and all connections to the Converter Units. See the Operations manual for more information how to manage the RMC.
Warning
Do not open or make modifications to a Converter Unit or the RMC. This is strictly prohibited and can be a threat to life.
Caution
In case of a serious system failure or performance deviation, the Converter Unit must be sent to the nearest eSite Power Systems approved service centre.
3.2 Technical specifications
This section outlines the technical specifications of an example system with 1 RSE Converter Unit, equipped with 3 rectifiers and 3 solar converters.
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, 1500 W @ 85 V
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.
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.
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 %
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
I/O
20 Digital inputs; 10 Digital outputs; 4 Analog inputs; 2 Analog outputs (all configurable)
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, USB, Wi-Fi
Isolation
3.0 kV AC mains – Earth 1.5 kV AC mains – Sec 707 V DC mains – Earth
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