We once received an enquiry: ‘For a 600 V/800 V dual-platform system, what resistance value should be selected for the braking resistor?’ In the field of variable frequency drives (VFDs), this question is easy to answer. Simply open the drive…
An electrical engineer sent us a quotation request stating ‘peak 300 kW’, whilst our data sheet specifies ‘rated 140 kW’. He asked: Which figure should be used as the basis for the design? Is 140 kW actually sufficient? In the…
Use this HVCH pre-commissioning framework to review insulation resistance, connectors, grounding, coolant readiness, controls and safety evidence.
Review BTMS pump head, circuit pressure drop, cold-coolant effects and branch flow before selecting a thermal system for an electric bus or truck.
Define heat pump and HVCH duties for electric buses and trucks. Review supplemental heat, shared-loop priorities, power limits and mode-transition evidence.
Compare BTMS cooling capacity at matched coolant, ambient and electrical conditions. Request the evidence needed for electric bus and truck selection.
Every request for quotation (RFQ) we receive for braking resistors contains two key values: the DC bus voltage and the braking power. The customer is interested in just one final result—the resistance value (in ohms). A quick search for the…
Review HVCH coolant compatibility before release: exact fluid, additives, conductivity, materials and fill controls for electric bus and truck heating circuits.
Review BTMS condenser airflow, hot-air recirculation and vehicle-bay restrictions before freezing an electric bus or truck installation. Prepare the right evidence.
Bei der Festlegung der Spezifikationen für Bremswiderstände kommt es entscheidend auf drei Werte an. Sind diese drei Werte korrekt, lässt sich der Widerstand nahtlos in das Fahrzeug integrieren und funktioniert langfristig stabil; ist jedoch auch nur einer dieser Werte falsch,…