CABLE CABINET E-MOBILITY AHMA LKM12212X

Charging stations are wall-mounted electrical units designed to meet the requirements and specifications of charging station standards. Temperature management is particularly critical in electric vehicle charging, so UTU charging stations always feature component-specific ventilation gaps and field-specific ventilation. The enclosure class is IP31 due to the ventilated structure, which can be upgraded to IP34 by installing a protective cabinet (suitable protective cabinet LKS1090, no. 3426358). For electricity network measurement, the measurement models (LKM and LJKM) include an M2 meter position and 0.2S class current transformers, along with the Hager SPA930 combined overvoltage protector with alarm contacts. The unit can be connected to a 63A network connection, which is more cost-effective than a power connection. Later, as power demand increases, the connection can be upgraded up to 125A. This is achieved via a DIP switch inside the compact breaker (breakers can be sealed). Charging Station Ahma LKM12212X Features

• Rated current 125A (selectable 80A / 100A / 125A)
• Outputs: 12 x MCN320E (Hager circuit breaker, C-curve, 20A, 3-pole)
• Input: Compact breaker HHS125DC with mounting rail (Hager H3+)
• Network analyzer with ModBus communication (Circutor CVM-C11)
• Input connectors HYS005H (Al/Cu 35-120mm²)
• Charging output connectors: Al/Cu interchangeable connectors 2.5-35mm²

Temperature Management

In electric vehicle charging, the output components of the station often operate near their rated current, making temperature management critically important for the station’s lifespan.

The station incorporates temperature management requirements suited to charging load:

• Field-specific ventilation
• Air gaps in charging outputs
• Thermal emergency shutdown function

Output balancing factor of 1 (as required by the charging station standard).

The station features DIN rail mounting for sensors, enabling readiness for dynamic temperature management. When connected to an eParking backend system, the charging station can dynamically control charging load based on the temperature of output components.

Lifecycle Management

The station includes a reserved device space for load management devices. This device space is a general-purpose compartment suitable for installing any device. The space reserves room for an eTolppa system load management device (eG) for multi-level load management. When the eTolppa load management device is installed in the station, no separate connection device is required at charging points.

If the thermal emergency shutdown function repeatedly interrupts power supply during the station’s lifecycle, it is advisable to implement dynamic temperature management. In this mode, the backend system can continuously limit charging station loads based on the temperature of output components.

The station includes reserved space for a harmonic filter. The network analyzer can monitor the development of harmonic distortions, and a harmonic filter can be easily added later. Alarms related to harmonics can be added to the analyzer.

The station also includes a separate compartment for spare outputs. The spare output compartment standardly includes 3 x C10 and 2 x C16 (1-pole) circuit breakers as backup (for other electrical needs). Spare outputs are not wired to busbars.

This product description is an automated translation of the original Finnish description.