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HVCH CAN Integration: An OEM Control Interface Checklist
Engineering illustration of a generic high-voltage coolant heater connected to vehicle controllers over a CAN communication path.
How Duty Cycle Determines Braking Resistor Size
A customer sent us a selection table for braking resistors for variable frequency drives (VFDs) and asked: ‘Our braking power is 140…
BTMS Refrigerant Circuit vs Coolant Loop: An OEM Integration Guide
Engineering illustration of a commercial EV battery coolant loop coupled to a separate refrigerant circuit through a chiller.
Matching Braking Resistor Resistance to Your DC Bus Voltage (450–850 V)
We once received an enquiry: ‘For a 600 V/800 V dual-platform system, what resistance value should be selected for the braking resistor?’…
Continuous vs. Peak Power: What Really Sizes a Braking Resistor
An electrical engineer sent us a quotation request stating ‘peak 300 kW’, whilst our data sheet specifies ‘rated 140 kW’. He asked:…
HVCH Insulation Resistance: Pre-Commissioning Checks
Use this HVCH pre-commissioning framework to review insulation resistance, connectors, grounding, coolant readiness, controls and safety evidence.
BTMS Pump Head and Pressure Drop: An OEM Review Guide
Review BTMS pump head, circuit pressure drop, cold-coolant effects and branch flow before selecting a thermal system for an electric bus or truck.
Heat Pump and HVCH: Define the Backup Heating Duty
Define heat pump and HVCH duties for electric buses and trucks. Review supplemental heat, shared-loop priorities, power limits and mode-transition evidence.
BTMS Cooling Capacity: Check the Rating Conditions
Compare BTMS cooling capacity at matched coolant, ambient and electrical conditions. Request the evidence needed for electric bus and truck selection.