SENS EnerGenius® DC Compact Technical Manual
7
3
PERFORMANCE SPECIFICATIONS
EnerGenius® DC is a high power industrial/utility class 3-phase switchmode battery charger/power supply,
specially hardened for use in harsh industrial environments. Advanced technology switch mode power conversion
is significantly smaller & lighter than conventional line frequency (e.g. SCR) power conversion and, even without a
battery connected, delivers lower output ripple and much faster dynamic response.
Forced Conduction
TM
cooling keeps the high efficiency power electronics free of dust and dirt, making EnerGenius
DC well-suited for operation in industrial, utility, power plant, and other harsh environments. Two variable speed,
premium ball-bearing fans cool each rectifier. Rectifiers maintain nearly full output capability even if one fan fails.
A fan failure alarm system with local and remote indication enables service dispatch while the second fan
continues to run. The fan module is easily replaced in the field with common tools.
5 Standard Form C contact alarms are factory set and field reconfigurable, with indication via communication
port, front panel LCD and assignable alarm relays. Two additional high current AC alarm relays are optional.
Options include supplemental surge suppression, and data communication including Modbus, DNP3 and IEC
61850. Chargers can be equipped with one or multiple communication protocols. Specifications are detailed in the
table below, see following sections for installation and operation instructions.
Table 1
–
Specifications
AC Input
Voltage, frequency
Full output power: 358-528 VAC 3-phase line to line, 50%
power limit from 188-357 VAC. AC line to ground voltage
limited to 277VAC. 47-63 Hz.
Input current
12A maximum at 358VAC for maximum configured unit.
Overcurrent protection
3-pole UL 489 listed circuit breaker
10 kAIC, lockable
Loss of phase
Continues operating with current limit reduced to 50%
AC transient protection
Layered electrical transient defenses. Optional UL 1449 Type
1 Listed supplemental surge protection, alarmed and with
field replaceable elements, surge capacity rated 75kA 8/20
µs; visual and remote indications.
Loss of phase
Continues operating with current limit reduced to 50%
Efficiency
Power Factor and Total
Harmonic Distortion
>.98 typical at maximum rated load current and boost charge
voltage. Total Harmonic Distortion <3%
DC Output
Voltage
120 VDC or 240 VDC nominal. 120 VDC: output adjustable
from 8-160V. 240 VDC: output adjustable from 16-320V.
Current
Output limit: 7kW or 50A for 120VDC models whichever is
less, or 7kW or 25A for 240VDC models, whichever is less
Soft Start
System gradually increases current output from zero with a
maximum of 5 seconds to full required output
Charging modes
Multi-stage, including float, boost, HELIX, and commissioning
charge modes
Current limit
100% current capability subject to temperature limits and AC
voltage limits; field adjustable to max rated current.
Charging characteristic
Constant voltage, current limited; patented Dynamic Boost
and HELIX control
Line & load regulation
±0.5%
