Measure
Obtain the required site or feeder load value from the approved metering and communication arrangement.
Dynamic Load Balancing DC Charger
• Keeps charging load within a defined site limit • Redistributes power as vehicle demand changes • Coordinates chargers with other facility loads • Supports multi-bay commercial charging projects • 40–240kW charger configurations available • DC200–1000V supports varied EV platforms • Optional OCPP enables managed operation
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Managed Site Power
Allocate Limited Electrical Capacity Where It Is Needed
A Dynamic Load Balancing DC Charger adjusts charging output according to an enforceable site limit, active vehicle demand and configured allocation rules. It can help a multi-charger site avoid treating every charger nameplate as an uncontrolled simultaneous load.
Load balancing does not create additional electricity. The selected site limit must still deliver the required energy before vehicles depart while leaving sufficient capacity for other facility loads and agreed operating reserves.
- Defined site power ceiling
- Real-time available capacity
- Multi-charger coordination
- Vehicle-demand response
- Configurable allocation rules
- Fallback behavior planning
Inputs Needed Before System Design
- Grid LimitApproved utility or transformer capacity
- Base LoadExisting facility demand by time interval
- ChargersQuantity, rating and simultaneous outputs
- VehiclesEnergy demand and charging capability
- ScheduleArrival, departure and charging windows
- PriorityAllocation and minimum-power rules
- FallbackResponse to meter or controller loss
Control Principle
01
02
03
04
Balance the Site Limit, Building Demand and EV Load
The control arrangement needs a defined capacity limit, a reliable source of load information and rules for distributing the remaining power between active charging sessions.
Calculate
Compare current facility demand with the configured site limit and operating reserve.
Allocate
Distribute permitted charging power according to active vehicles, equipment limits and project priorities.
Update
Recalculate allocation when vehicle demand, connector status or other facility loads change.
Available Series Data
Dynamic Load Balancing DC Charger Technical Range
The final specification should identify the charger hardware separately from the site-level controller, meter, communication and allocation requirements.
| Category | Selection Item | Available Specification |
|---|---|---|
| AC Input | Voltage Range | AC380V ±20% |
| AC Input | Connection | 3P + N + PE |
| AC Input | Operating Frequency | 45–65Hz |
| Electrical | Power Factor | ≥0.95 under normal output power |
| DC Output | Rated-Power Options | 40 / 60 / 80 / 120 / 160 / 180 / 240kW |
| DC Output | Voltage Range | DC200–1000V |
| DC Output | Series Current | 0–300A; final limit depends on configuration |
| Interface | Connector Options | CCS1 / CCS2 / GB/T / CHAdeMO |
| Interface | Connector Quantity | 2 standard; project options up to 4 guns |
| Cable | Standard Length | 5m; optional length upgrade available |
| Cooling | Charging Cable Cooling | Air cooling; liquid cooling optional |
| Load Control | Site Power Limit | Project-defined managed charging requirement |
| Load Control | Allocation Method | Defined according to project control logic |
| Load Control | Metering Input | Meter and interface require project confirmation |
| Communication | Network Options | LAN / Wi-Fi / 4G by ordered configuration |
| Communication | Charging Protocol | Optional OCPP; version confirmed by project |
| Environment | Operating Temperature | -20°C to 50°C |
| Environment | Storage Temperature | -40°C to 85°C |
| Environment | Humidity | 5–90% RH, non-condensing |
| Environment | Altitude | ≤2000m |
| Installation | Cabinet Type | Floor-mounted; indoor or outdoor use |
| Enclosure | Protection Level | IP54 |
| Customization | Project Support | OEM, ODM and project-specific configuration |
Allocation Strategies
Equal Share
Departure
Energy Target
Building Load
Vehicle Demand
Scheduled
Choose Rules That Match the Charging Operation
Different sites need different priorities. The control method should be selected from real vehicle schedules and operating risks rather than from charger quantity alone.
Divide Available Capacity
Share permitted power between active connectors when vehicles have similar importance and charging windows.
Prioritize Earlier Vehicles
Allocate more capacity to vehicles with earlier departure deadlines, subject to charger and vehicle limits.
Follow Required Kilowatt-Hours
Use the remaining energy requirement and available charging window when these inputs can be supplied reliably.
Protect the Facility Limit
Reduce charging demand when other building loads approach the defined connection or transformer limit.
Redirect Unused Power
Move available capacity when one vehicle reduces its request during the charging curve or completes its session.
Apply Time-Based Limits
Use approved operating schedules where site demand limits or electricity conditions vary by time period.
Illustrative Allocation
Available Power Changes as Site Conditions Change
The simplified display below illustrates the operating principle only. Actual power values, minimum allocation steps and response times must be confirmed for the ordered system.
Site Limit Maximum permitted demand is defined from the approved electrical design. Existing building demand is deducted before charging capacity is allocated.
Facility Load
Variable
Charger A
Managed
Charger B
Managed
Engineering Inputs
Use Measured Site Data and Vehicle Schedules
Electrical Capacity
- Utility connection limit
- Transformer rating and loading
- Distribution-system capacity
- Permitted maximum demand
- Required operating reserve
Existing Demand
- Interval load measurements
- Daily and seasonal peaks
- Loads coinciding with charging
- Planned facility additions
- Measurement-point location
Vehicle Operation
- Vehicle quantity and groups
- Required energy per visit
- Arrival and departure times
- Vehicle charging limits
- Departure priorities
Charger Layout
- Charger and connector quantity
- Maximum simultaneous outputs
- Power-sharing architecture
- Future charging bays
- Required equipment redundancy
Control Integration
- Site controller responsibility
- Meter communication interface
- Update and response requirements
- OCPP platform requirements
- Network connection method
Acceptance Criteria
- Enforced site maximum
- Allocation-priority tests
- Vehicle completion targets
- Communication-loss response
- Alarm and recovery records
Fallback Operation
Meter Loss
Controller Loss
Network Loss
Recovery
Define Safe Behavior When Control Data Is Unavailable
A load-management design is incomplete until it states how the charging equipment responds when the meter, local controller, network or backend becomes unavailable.
Missing Facility-Load Data
Define whether charging reduces to a conservative limit, pauses or follows another approved rule when live measurement is unavailable.
No Allocation Instruction
Specify the permitted local output and recovery process if the site-level controller stops communicating with the chargers.
Backend Becomes Unreachable
Confirm whether load balancing is performed locally or depends on the remote platform, then define the corresponding offline behavior.
Return to Managed Operation
Test how current limits, queued instructions, alarms and active sessions are handled when communication is restored.
Related Charging Options
Compare Power, Control and Site Configurations
Buyer Questions
Dynamic Load Balancing DC Charger FAQ
What is dynamic load balancing for DC chargers?
It is a control method that adjusts charging output according to a defined site limit, current facility demand, connected vehicles and configured allocation priorities.
Can load balancing reduce the required grid capacity?
It can cap coincident charger demand below the unmanaged sum of charger ratings. The proposed limit must still satisfy vehicle energy requirements, charging windows and other facility loads.
Does load balancing make every vehicle charge at the same power?
Not necessarily. Power may be divided equally or allocated according to vehicle demand, departure time, energy target or another confirmed project rule.
What site data is needed for dynamic load balancing?
Provide the utility and transformer limits, existing interval-load data, measurement point, charger arrangement, vehicle energy requirements, charging windows and planned future loads.
Is OCPP required for load balancing?
The control architecture may use charger, local-controller and backend functions in different combinations. State the required OCPP version and whether allocation must continue without the remote platform.
What happens if the meter or controller loses communication?
The required fallback rule must be defined during system design. Possible project responses include a conservative charging limit, controlled pause or another approved local operating state.
What information is required for a quotation?
Send the charger and connector quantities, vehicle schedules, required energy, charger ratings, site supply, transformer limit, existing load data, metering arrangement, allocation priorities, fallback rules, OCPP platform, destination and OEM needs.
Build the Load Strategy from Measured Site Demand
Send the utility limit, transformer capacity, existing load profile, charger layout, vehicle schedules, energy targets and control requirements for a project review.
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