Overview
The Klitv 20–40 kW DC Charging Pile is the entry point to direct-current EV charging — delivering substantially faster session times than AC Level 2 equipment while remaining affordable for operators who need to deploy charging at scale without the grid infrastructure requirements of higher-power units.
It is designed for installation in EV charging and battery swapping stations, public parking lots, residential parking lots, and large commercial building car parks. At 40 kW, the unit adds meaningful range to a typical battery-electric passenger vehicle in 30–40 minutes, which suits deployments where vehicles dwell for 30–90 minutes: retail and public parking, residential complexes, and light commercial sites.
Technical Design
Power Architecture
The unit takes a three-phase AC 380 V ±15% input and converts power internally to DC. Output is adaptive across DC 200–1,000 V, so the same charger serves 400 V passenger EVs and 800 V high-voltage platforms without configuration changes. Rated output is specified per site between 20 kW and 40 kW, depending on the installation context and required throughput.
Driver Interface and Authentication
A 10-inch display guides the driver through the session and supports four startup methods — QR code, RFID card, password, and Auto-VIN. The interface is available in multiple languages and can carry operator branding as part of an OEM or private-label order. Auto-VIN startup is particularly useful at fleet and depot sites, where the vehicle identifies itself and the session bills to the correct account without driver input.
Safety and Protection
The pile carries a comprehensive multi-layer protection suite:
- Input overvoltage and undervoltage protection with automatic recovery
- Overcurrent and output short circuit protection with instantaneous cutoff
- Insulation and leakage monitoring on input and output circuits
- Lightning surge protection and overtemperature monitoring
- Physical emergency stop accessible from the front of the unit
All protection events are logged with timestamp and fault code for remote diagnostics through the charging management system.
Deployment and Installation
Grid Requirements
The charger requires a three-phase AC 380 V ±15% supply. Each unit should be fed from a dedicated circuit with its own upstream protection, sized by a qualified electrical contractor against the rated output specified for the site and the cable run length. Voltage drop over the run should be checked against IEC 61851 limits before installation.
Site Selection
The IP54 rating and -20 °C to +55 °C operating range support both indoor basement car parks and outdoor installations, including sites protected by a canopy. Allow clearance around the unit for airflow and service access, and mount it on a concrete pad or plinth with cable entry from the base.
Multi-Unit Deployments
For sites deploying multiple 20–40 kW units alongside AC chargers, OCPP-compatible load management can distribute available grid capacity across all units dynamically, preventing overload during peak periods without additional hardware.
Comparison With AC Level 2
| Parameter | 7–22 kW AC | 20–40 kW DC |
|---|---|---|
| Charging principle | AC (converted in vehicle) | DC (converted in charger) |
| Output voltage | AC 220 V / AC 380 V | DC 200–1,000 V adaptive |
| Suitable dwell time | 2–10 hours | 30–90 minutes |
| Grid connection | Single-phase or three-phase AC | Three-phase AC 380 V ±15% |
| Vehicle compatibility | All AC-capable EVs | DC-capable EVs (CCS/CHAdeMO/GB/T) |
| Typical use | Home, community, office, long-stay public parking | Public parking, stations, commercial buildings |
