The HVC27 (B88269X) HV contactor series uses a gas-filled ceramic arc chamber which is also used in the other HVC types from TDK as well as an optional Hall-effect sensor for the auxiliary contact to detect the switching state of the main contacts.
How an HV contactor works Vacuum Arc Extinguishing Chamber
The bidirectional design allows only one HVC27 to charge and discharge batteries as well as to power motor drive systems and regenerative braking.
High-voltage contactors with high continuous current carrying capacity are used in stationary battery storage systems such as storage for photovoltaic or UPS systems as well as in electric vehicles for fast disconnection of the lithium-ion battery and in DC fast charging stations.
There are three mechanical versions of the UL-certified HVC27 series: an upright version (C1) with dimensions of 95 x 44 x 90 mm (L x W x H) and a horizontal version (C5) with 90 x 90 x 46 mm, as well as a third version as a replacement type (NIL) for the HVC25 (HVC200, 300 and 500). The high current contactors are available with single or double coil, with working voltages of 12 V or 24 V. The single-coil version requires 6 W in continuous operation, the dual-coil version only 4 W.
The service life for resistive opening (450 V/300 A) is specified with 1500 operations for the single coil version and 2000 operations for the dual-coil version. At 750 V/300 A, these values are 150 and 1000 opening cycles, respectively.
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