TDK Corporation has announced its new generation of high-voltage contactors that can safely and reliably switch off continuous DC currents of 300 to 500 A, and operating DC voltages up to 1000 V in lithium-ion batteries in 20 ms or less, depending on the type.
This is made possible by the gas-filled ceramic arc chamber which is also used in other HVC types from TDK.
Completely new is the optional Hall-effect sensor for the auxiliary contact. It is used to detect the switching state of the main contacts. The bidirectional design allows only one HVC27 to charge and discharge batteries, and to power motor drive systems and do regenerative braking (recuperation).
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, and a third version as a replacement type (NIL) for the HVC25. The high-current contactors are available with single or double coil, with working voltages of 12 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.
High-voltage contactors with high continuous current carrying capacity are used, for example, in electric vehicles for fast disconnection of the lithium-ion battery, and in DC charging stations and in stationary battery storage systems such as storage for photovoltaic or UPS systems.
Bridging the gap between MCUs and MPUs Future Electronics
Editor's Choice AI & ML
The Renesas RA8 series microcontrollers feature Arm Helium technology, which boosts the performance of DSP functions and of AI and machine learning algorithms.
Read more...Microchip introduces ECC608 TrustMANAGER Altron Arrow
Circuit & System Protection
To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.
Read more...Enhanced code protection for USB µC portfolio Future Electronics
DSP, Micros & Memory
To help easily incorporate USB power and communication functionality into embedded systems, Microchip Technology has launched the AVR DU family of microcontrollers.
Read more...Compact power relays Future Electronics
Interconnection
The new HE-R Series power relays by Panasonic Industry are PCB-mounted relays for easy board assembly, with both two- and four-pole contact arrangement options.
Read more...Varistors for automotive applications Future Electronics
Circuit & System Protection
TDK Corporation has announced the addition of two new varistors to its AVRH series for automotive applications where both are characterised by the high electrostatic discharge-withstanding voltage demanded to ensure the safe operation of safety-critical automotive functions.
Read more...Single-phase EMC filters RS South Africa
Circuit & System Protection
TDK Corporation has expanded its portfolio of single-phase EMC filters for AC and DC applications up to 250 V and rated currents from 6 to 30 A.
Read more...Power modules enable 15% weight reduction in race cars Future Electronics
Power Electronics / Power Management
Chosen for their small and lightweight characteristics, the Vicor modules efficiently step down the high-voltage accumulator’s power from 400 – 600 V to 27 – 38 V.