FOXESS EPSBOX-SP (01) PDF Document

The FOXESS EPSBOX-SP is an auxiliary product suitable for the residential power system that integrates a Smart Meter, Breaker, ATS, and other devices internally. It supports continuous loads up to 100A, enabling whole-house backup power without interruption.

The power supply status of the load can be switched automatically or manually, and the automatic switching time is less than 3 seconds for the FOXESS EPSBOX-SP.

The FOXESS EPSBOX-SP will automatically switch to the reserve power supply side (EPS terminal of the inverter) to supply power to the load when the power grid fails, and it will switch back to the power grid side to supply power to the load when the power grid is restored.

The dimensions are 446mm in width, 550mm in height (550mm total, 608mm to the top of the enclosure), and 146mm in depth (139mm for the main body, with protrusions).

The ferrules are labeled A through G with the following descriptions:

The pin definitions for the Meter / RS485 interface for KH series are as follows:

The pin definitions for the Meter / RS485 interface for HI-G2 series are as follows:

The pin definitions for the Meter / RS485 interface for EVO series are as follows:

The reference wire gauge specifications are as follows:

The wire specification and crimping wire outer diameter is 14-22mm. The wire stripping length is 140mm, and the stripping length of the copper-core wire is 14mm (L, N and PE).

Note: The EVO series EPS does not have a PE wire, so its EPS can be used with a two-core cable.

The wire specification and crimping wire outer diameter is 16-37mm. The wire stripping length is 140mm, and the stripping length of the copper-core wire is 18mm (L, N and PE).

The wire outer diameter is 3-6.5mm. The stripped length of the wire is 150mm, and the stripped length of the copper core is 10mm.

For KH and H1-G2 series:

For EVO series:

RJ45 Port (Pins 1-8):

COM Port (Pins 1-24):

Step 1: Open the box cover, remove the fixing screws of the insulation board, and then take out the insulation board.

Step 2: Pass cable through cable gland and wire according to the marks at the bottom of the box. After wiring all cables, restore the insulation board to its original position and then tighten the box cover.

Step 1: The wire specification and crimping wire outer diameter is 14-22mm; the wire stripping length is 140mm; the stripping length of the copper-core wire is 14mm (L, N and PE).

Step 2: Pass cable through cable gland. Connect L, N and PE to the tubular terminal by crimping (only multi-core soft stranded wires must be crimped to tubular terminal; single core wires, thick stranded hard stranded wires, and tinned fine wire soft stranded wires may not be crimped).

Step 3: Connect the power lines L, N and PE: Insert them in the circuit breakers and PE connectors in sequence according to the marks on the bottom of the box, and then tighten the screws (M5, 3.5-5N M).

The EVO series EPS does not have a PE wire, so its EPS can be used with a two-core cable.

It is necessary that PE is connected to a functional ground, even if the grid connection is not active.

When parallel-connecting energy storage inverters, considering that the FOXESS EPSBOX-SP only accepts multi-core flexible stranded cables, all cable paralleling must be completed externally prior to entering the BOX. Ensure the sum of currents entering the BOX does not exceed 63A per phase. Exceeding this limit will trip circuit breakers, causing system failure. Additionally, configure inverters per their user manuals. Prior to installation, confirm the inverters support this functionality.

The wire specification and crimping wire outer diameter is 16-37mm; the wire stripping length is 140mm; the stripping length of the copper-core wire is 18mm (L, N and PE).

Pass cable through cable gland. Connect L, N and PE to the tubular terminal by crimping (only multi-core soft stranded wires must be crimped to tubular terminal; single core wires, thick stranded hard stranded wires, and tinned fine wire soft stranded wires may not be crimped).

Connect the power lines L, N and PE: Insert them in the circuit breakers and PE connectors in sequence according to the marks on the bottom of the box, and then tighten the screws.

The wire outer diameter is 3-6.5mm, the stripped length of the wire is 150mm, and the stripped length of the copper core is 10mm.

Pass cable through cable gland and crimp the tubular terminal (only multi-core soft stranded wires must be crimped to tubular terminal, single core wires, thick stranded hard stranded wires, and tinned fine wire soft stranded wires may not be crimped).

Wiring: Insert into the quick-connect terminal.

In the case that only one communication cable is required, the extra opening in the leftmost cable glands should be plugged up.

If Inverter 2 requires an electric meter, connect the meter’s RS485 port in parallel with Meter1’s RS485 port. Specifically, connect A to A and connect B to B. Additionally, set this meter’s communication address to 2.

When using a CT, its ratio must match the inverter’s preset ratio. For example, inverters of KH/HI-G2/EVO series require a 3000:1 CT ratio. And it must be connected to the CT2 terminal on the inverter. Verify correct CT orientation to prevent abnormal power generation.

Step 1: Trim 9mm of insulation from the wire end of a 10mm² wire.

Step 2: Insert striped wire into earth terminal and ensure all conductor strands are captured in the earth terminal. Crimp the earth terminal with crimping pliers. Put the earth terminal with striped wire into the corresponding crimping pliers and crimp the contact.

Step 3: Use the crimping pliers to press the grounding wire into the ground terminal, screw the ground screw with a screwdriver (M5, 2.0N M).

Check and confirm that the equipment is installed securely and reliably.

Check if the grounding wire is correctly, firmly and reliably connected.

Check if the wire is correctly, firmly and reliably connected (confirm if the phase sequence is correct).

Check if the communication wire is correctly, firmly and reliably connected.

The default state of the automatic transfer switch equipment is automatic mode. If you need to switch manually, please adjust the double power transfer switch to manual mode.

Before product maintenance and testing, all external power sources must be cut off, and maintenance shall be operated by professional personnel. Do not modify the product during maintenance.

Ensure that the installation site meets the following conditions:

• Not in direct sunlight.
• Not in areas where highly flammable materials are stored.
• Not in potential explosive areas.
• Not in the cool air directly.
• Not near the television antenna or antenna cable.
• Not higher than altitude of about 2000m above sea level.
• Not in environment of precipitation or humidity (> 95%).
• Under good ventilation condition.
• The ambient temperature in the range of -25°C to +60°C.
• The slope of the wall should be within +5°.

The wall hanging the FOXESS EPSBOX-SP should meet conditions below: A.Solid brick/concrete, or strength equivalent mounting surface; B.FOXESS EPSBOX-SP must be supported or strengthened if the wall is not firm enough (such as wooden wall, the wall covered by thick layer of decoration).

Please avoid direct sunlight, rain exposure, snow laying up during installation and operation.

The minimum distances are:

Tools required for installation:

• Marker pen;
• Electric drill (drill bit set 8mm);
• Crimping pliers;
• Stripping pliers;
• Screwdriver.

The dimensions (unit: mm) on the back of the machine are as follows: 288.8mm height for the mounting portion, 261.2mm height for the bracket mounting area, 420mm width, 430mm width for the bracket alignment, and hole distances of 270mm between centers and 26.5mm from the edge.

Drill holes with electric drill, make sure the holes are at least 50mm deep and 8mm wide, and then tighten the expansion tubes.

Insert the expansion tubes into the holes and tighten them. Install the bracket with the expansion screws (M6, 2.2-2.7N M).

Mount the FOXESS EPSBOX-SP to the bracket and fasten the BOX with two M5 bolts locking on both side (M5, 2.0N M).

The fixing screws for the insulation board should be tightened with a torque of 1.5-1.8N M (M4).

For UTILITY SUPPLY on the FOXESS EPSBOX-SP:

• Rated voltage: 220/230/240VAC, L/N/PE
• Rated frequency: 50/60Hz
• Max. input current: 100A

For INVERTER GRID on the FOXESS EPSBOX-SP:

• Rated voltage: 220/230/240VAC, L/N/PE
• Rated frequency: 50/60Hz
• Max. input current: 63A

For INVERTER EPS on the FOXESS EPSBOX-SP:

• Rated voltage: 220/230/240VAC, L/N/PE
• Rated frequency: 50/60Hz
• Max. input current: 63A

For Load on the FOXESS EPSBOX-SP:

• Rated voltage: 220/230/240VAC, L/N/PE
• Rated frequency: 50/60Hz
• Max. output current: 100A

For INVERTER 2 on the FOXESS EPSBOX-SP:

• Rated voltage: 220/230/240VAC, L/N/PE
• Rated frequency: 50/60Hz
• Max. input current: 63A

The Ingress Protection rating for the FOXESS EPSBOX-SP is IP65.

The operating temperature range for the FOXESS EPSBOX-SP is -25 … +60°C.

In the off-grid mode, derating is required when the operating temperature exceeds 45°C. The specific derating for Max. Current (Load Current (A)) at different ambient temperatures is:

Toggle the slide cover to the left until the arrow indicates that it is in the manual position, and pull out the handle and insert it into the conversion hole for conversion operation.

If you want to return to automatic mode, you must keep the arrow pointing to “manual” in manual mode, and then push the arrow to “automatic”.

The position of the arrow is the current working mode.

Ensure that the FOXESS EPSBOX-SP is intact during transportation. If there is any visible damage, such as cracks, please contact your dealer immediately.

The tubular ferrules provided are listed below with their corresponding quantities:

When connecting power lines L, N and PE into the circuit breakers, the screws should be tightened to a torque of 3.5-5N M (M5).