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Bypass Socket Guide

The bypass socket is a bi-directional interface that automatically switches its role without manual operation. It can be used as:

  • 🔌 Electrical load → Output (power supply)
  • ☀️ PV micro-inverter → Input (power generation)

1. Device Identification​

The system determines the connected device type based on power direction + duration:

TypeDetection Condition
LoadOutput power above 30 W for more than 20 seconds
Micro-inverterInput power above 30 W for more than 5 seconds
  • In off-grid mode, if the bypass socket power is 0 W, the system retains the last detected state.
  • After restart, the default mode is set to load operation.

2. System Behavior​

System behavior depends on:

  • Whether the system is grid-connected or off-grid
  • Whether the connected device is a load or a micro-inverter
info

The power capability of the bypass socket depends on the number of battery packs. A single main unit has limited capacity and may not reach the maximum values listed below. To achieve higher power output, increase the number of battery packs.

Minimum recommended configuration:

  • 1 × SolidFlex 2000 + 2 × SFA1800
  • 1 × PowerFlex 2000 + 1 × PFA2000

2.1 Grid + Load​

The load is powered by either the grid or the system inverter.

Power range:

  • Up to 3600 W: normal operation
  • Above 3600 W (current ≤ 16 A) for more than 5 seconds: protection is triggered, the bypass socket disconnects, and automatically recovers after 15 minutes

Battery protection:

  • Discharge stops when SOC drops to 5%

2.2 Grid + Micro-Inverter​

Micro-inverter energy is used for household consumption and battery charging. Excess energy may be fed into the grid within limits.

Power range:

  • Up to 2400 W: normal operation
  • Above 2400 W for more than 30 seconds: protection is triggered, the bypass socket disconnects, and automatically recovers after 15 minutes

Grid feed-in limit protection:

  • If input power exceeds the maximum feed-in power limit by 10% for more than 30 seconds, the system prioritizes disconnecting the bypass socket and recovers after 15 minutes.

2.2.1 Grid-Connected Energy Behavior​

In grid-connected operation, the system automatically allocates energy based on the selected energy mode, following a consistent priority:

  • First, supply household loads or charge the battery
  • Any remaining energy may be exported to the grid if available

The priority between load and battery may vary depending on the selected mode.

The micro-inverter is used as a supplementary PV source, while direct PV serves as the primary source. The system automatically coordinates both, with no manual switching required.

What happens to excess energy​

When generation exceeds consumption (load is satisfied + battery is full):

Feed-in StatusSystem Behavior
Within limitExcess energy is fed into to the grid
Above limitThe system automatically limits output to avoid exceeding the limit:
- If the micro-inverter output exceeds the feed-in limit: the bypass socket disconnects
- If the micro-inverter is within the limit but direct PV causes the excess: direct PV output is reduced

How to set feed-in power limit:
INDEVOLT App → Device page → Select device → → Power Settings → Feed-in Power Limit

Mode 1: Self-Consumption​
  1. Micro-inverter power supplies household load first
  2. Remaining energy charges the battery
  3. Once load is met and battery is full, excess follows the excess energy rule
Mode 2: Charge/Discharge Schedule​

(1) Charging

  • A. PV only

    1. Micro-inverter charges the battery first
    2. Then supplies household load
    3. When battery is full and load is satisfied, excess follows the excess energy rule

  • B. PV + AC

    1. Direct PV is prioritized for battery charging:
      • If PV is sufficient: PV charges battery, micro-inverter supplies load
      • If PV is insufficient: micro-inverter assists battery charging, remaining power supplies load
    2. Once battery is full, micro-inverter prioritizes load supply
    3. Excess follows the excess energy rule

(2) Discharging

  1. Micro-inverter supplies load first
  2. Then charges the battery
  3. Once load is satisfied and battery is full, excess follows the excess energy rule
Mode 3: Real-Time Control​

(1) Idle / Charging

  1. Micro-inverter charges the battery first
  2. When the battery is full:
    • If power is 50 W or below: the system maintains the current state for self-consumption
    • If power exceeds 50 W for more than 30 seconds: the bypass socket disconnects, and direct PV output is reduced to bring system output back to 50 W or below

(2) Discharging

  1. Micro-inverter power supplies the load first
  2. Then charges the battery
  3. When battery is full:
    • If power stays within the configured discharge power plus tolerance: normal operation
    • If power exceeds the configured discharge power plus tolerance: bypass socket disconnects

Tolerance = 50 W or 10% of the configured power (whichever is greater)

Examples:

  • Configured discharge power: 400 W → protection triggered above 450 W
  • Configured discharge power: 800 W → protection triggered above 880 W

2.3 Off-Grid + Load​

When the grid is disconnected, the load is powered by the system inverter.

Power range:

  • Up to 2400 W + 2% (2448 W): stable operation
  • 2448 W – 2640 W: 30 s overload supported
  • 2640 W – 3000 W: 15 s overload supported
  • Above 3000 W: 100 ms overload supported
  • If the overload exceeds the system capability, the bypass socket disconnects and automatically recovers after 15 minutes

2.4 Off-Grid + Micro-Inverter​

  • EMS below 1.01.05
    ❌ Micro-inverter not supported (bypass socket disabled for protection)

  • EMS 1.01.05 or higher
    ✅ Micro-inverter supported

    • Power range: 30 W to 1200 W
    • When SOC drops below 3%, the inverter temporarily stops responding to micro-inverter input, but the bypass socket remains connected. Once SOC returns to 3% or higher, normal operation resumes automatically

3. Bypass Socket Control​

Control method depends on network status:

Network statusControl method
NormalApp / Bluetooth
AbnormalBluetooth only

Method 1: App Remote Control​

INDEVOLT App → Device → → Bypass Socket → Enable Status → Select connected device type

Method 2: Bluetooth Local Control​

App → Profile / Login page → Direct Device Connection → Scan QR code → Connect device → → Bypass Socket → Enable

Off-Grid Sleep Mode

If the Off-Grid Sleep Mode standby-to-shutdown countdown completes, the device enters sleep mode and the Bypass Socket is automatically turned off. It can be reactivated by:

  1. Short press the power button
  2. Using the appropriate control method based on network status