CE+T Power Bravo 10 - 48/230, User Manual

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ECI TECHNOLOGY
11 - Bravo 10 - 48/230 - User manual - v1.2
4.1 On-line Mode
DC is the primary source of supply whilst Mains (AC) works as the secondary source. Switching time between DC input
and AC input is 0 ms (source transfer). The power delivered by the DC source (usually a battery, but possibly any other
type of DC generator) is converted to provide regulated and transient-free power to the load. In the event of a short
circuit on the load side, the boost is automatic, timely and energized for a specific duration to trip downstream protective
devices.
4.2 Safe mode
Safe mode uses DC as the primary source of supply while Mains (AC) is on standby.
Mains (AC) is normally disconnected through an internal inlet relay and is only connected when down stream clearance
is required (boost) or if DC is unavailable.
The transfer between DC and AC results in a typical transfer time of 10 ms.
Typically the safe mode is used in extremely harsh environments such as railways. Under such conditions, it provides
extra isolation against mains-borne disturbances.
4.3 EPC-mode
Mains input (AC) is the primary source whilst DC works as backup.
The ECI is designed to operate on Mains on a permanent basis and to deliver output voltage conditioned with low THD.
The output sine wave is physically independent of whether the source is AC (or) DC. If the Mains is out of tolerance
or goes down, the converter seamlessly switches to DC and the converter operates in “Back-up mode” (Changeover
switching time is 0 ms).
As soon as the Mains returns to its valid range, the EPC mode is automatically resumed.
The EPC mode offers higher efficiency (up to 96% depending on the model) without compromising the purity of the
output sine wave.
Remarks: REG modules:
Inverter modules carrying the ECI logo together with the REG mark work only with DC input. Sinusoidal output is converted
from DC with the module operating as a traditional inverter. EPC mode and the boost are not available with REG modules.
4.4 Mix mode & Walk-in mode
Under some circumstances the DC and AC sources can be combined. The sequence is defined by a user selectable set
of parameters. Start, control and exit are fully automatic.
A specific example of Mix-mode is the Walk-in mode where the transfer from DC source to AC source is ramped up
within a fixed and adjustable period of time.