Low power requirements usually mean the installation of a standalone inverter together with a Manual ByPass. The main inconvenient is of course that in case of inverter failure, your load is down during the time it takes to access the site and engage the By-Pass!
The TSI BRAVO ST will bring the securitization of your critical load’s power to the next generation!
BRAVO – ST is a compact inverter with automated by-pass solution providing a pure sine wave AC supply. In conjunction with a DC Power system, it provides an excellent AC backup solution. It uses the latest inverter technology, providing superior energy efficiency in a compact size.
The “Twin Sine Inverter” (TSI) technology allow 3 operations mode (EPC double conversion AC to AC, ONLINE DC to AC from battery and o line by-pass to AC). The automatic bypass to AC allow easy hot plug module replacement without stopping the load giving highest AC output availability and avoid the need of an external manual by-pass.
All business critical applications and all types of AC loads. The solution is design for highest AC output availability. Both inverter modules and by-pass are hot-swappable which ensures low Mean Time to Repair (MTTR), reduction in service costs
|Input voltage VAC range||150-265 VAC|
|Input voltage VDC range||24 , 48 , 60, 110 , 220 VDC|
|Output Voltage||230 V / 220V / 240 Vac adjustable (default 230 Vac – 50 Hz)|
|Cooling / Isolation||Forced / Doubled|
|Alarms output / supervision||Dry contacts on shelf / Standard USB port and MODBUS on T2S, optional : Candis Display / Candis TCP-IP|
|Remote on / off||on rear terminal of the shelf via T2S|
|Model||Input Range VDC||Input Range VAC||Output VAC||Power VA|
|ST-24 / 230||19 – 35 VDC||150-265VAC||230VAC||1500VA/3000VA|
|ST-48 / 230||40-60 VDC||150-265VAC||230VAC||2500VA/5000VA|
|ST-110 / 230||90 – 160 VDC||150-265VAC||230VAC||2500VA/5000VA|
|ST-220 / 230||170 – 300 VDC||150-265VAC||230VAC||2500VA/5000VA|
DC is the primary source of supply whilst Mains (AC) works as the secondary source of supply. Switching time between DC input and AC input is 0ms (source transfer).The power delivered by the DC source (usually a battery , but it could be any other type of DC generator) is converted to provide regulated and transient free power to the load. In case of short circuit at the load side, the boost is automatically, timely and energized for a speciﬁc duration to trip downstream protective devices.
Safe mode uses DC as primary source of supply while Mains (AC) is in standby. Mains (AC) is normally disconnected through 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 typical transfer time of 10ms. Typically the safe mode is used in extremely harshed environments such as railways. Under such conditions it provides extra isolation against disturbances carried by the Mains.
Mains input (AC) is the primary source whilst DC works as backup.
The TSI is designed to operate on Mains on permanent basis and to deliver output voltage conditioned with low THD. There is no physical difference on the output sine wave 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” (Switching time back and forth is 0 ms). As soon as the Mains returns in to 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.
Under some circumstances DC and AC source 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 ﬁx and adjustable period of time.
Setting for Walk -in -Mode and Mix Mode can be made through the T2S supervisor conﬁguration ﬁle.
The automatic by pass is engaged in case of following condition
The automatic by pass IS NOT AVAILABLE if: