Photovoltaic grid-connection box
Category:
PV New Energy Grid Cabinet
Tel:
E-mail:
Introduction
This product is primarily used in residential photovoltaic distributed grid-connected power generation systems and small-scale commercial and industrial photovoltaic power systems. It is connected in series between the grid-connected inverter and the power grid. The product features a range of protective functions, including anti-islanding protection, voltage detection with closing-on-voltage and tripping-on-voltage-drop capabilities, protection against low grid voltage, overvoltage in the grid, lightning protection for the input, system overcurrent protection, and grid isolation. Precise energy measurement, efficient power transmission, and intelligent operational control are essential components of household grid-connected power generation systems. The product has passed industry-standard CCC certification and CE certification.
Main features
Reserve locations for installing metering meters and data collectors;
The meter’s viewing window and lead seal (anti-theft feature); the product adopts an integrated design concept, with the power distribution section completely isolated from the metering section, thereby reducing electromagnetic interference. A variety of self-resetting over- and under-voltage protectors and PV-specific reclosable circuit breakers are available, meeting the diverse usage requirements and acceptance standards of different regions. The enclosure lid requires a specialized key to open, enabling professional-level management.
Powder-coated enclosure and stainless steel enclosure available; suitable for outdoor installation, ensuring greater safety.
Supports special requirements and custom feature development.
Technical Parameters
| Product Model |
BWX (single-phase) |
BW X (three-phase) |
| Installation power |
3KW-20kW |
3KW-200KW |
| Inverter input channels |
Route 1 / Route 2 / Route 3 / Route 4 (the above suggestions recommend using a combiner box) |
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| Number of grid-connected output channels |
Route 1 |
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| Grid connection requirements |
Single-phase/three-phase grid connection |
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| Grid-connected voltage |
AC:220 AC:380 |
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| Switching capacity |
20A-100A |
32A-400A |
| Protection function |
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| Short-circuit protection |
There is |
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| Overload protection |
There is |
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| Lightning protection |
Available (Nominal current: In: 20 kA, Imax: 40 kA, Up ≤ 4 kV) |
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| Isolation protection (visual breakpoint) |
With (knife switch/hand-operated isolating switch) |
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| Over- and under-voltage protection |
There is |
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| Auto-reclosing |
There is |
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| Grid-connected switch |
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| Self-resetting over/under voltage protector (optional) 40A~125A |
1. When the power grid is disconnected or the bias exceeds 20%, it will automatically disconnect (internal disconnection); 2. When the power grid returns to normal, it automatically closes (internal connection is established); |
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| Photovoltaic-specific miniature reclosing circuit breaker (optional) 20A-100A |
1. When the power grid is disconnected or the voltage deviation exceeds 20%, the circuit breaker will trip automatically (the operating handle will act). 2. When the power grid returns to normal, the circuit breaker will automatically close (the operating handle will move). 3. Manual and automatic operation modes are switchable; 4: Check for closed-circuit breaker. |
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| Molded-case recloser (optional) 40A-400A |
1. When the power grid is disconnected or the voltage deviation exceeds 20%, automatic trip operation occurs (adjustable trip delay time: 0–10 seconds). 2. When the power grid returns to normal, the circuit breaker will automatically close. 3. Manual and automatic operation modes are switchable; 4: Phase-loss protection, neutral-break protection 5: Check for closing with pressure. |
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| Environmentally suitable |
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| Temperature and humidity |
Operating temperature: -25 to +60℃; Storage temperature: -40 to +70℃. Humidity: 0–90% with no frost formation; in areas free of corrosive gases (please specify if present). |
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| Use altitude |
≤2000M |
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| Regular parameters |
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| Box material |
Stainless steel, cold-rolled sheet with plastic coating, stainless steel with plastic coating, glass fiber reinforced plastic (SMC), transparent plastic box |
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| Protection level |
Outdoor IP45 / IP55 / IP65 |
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| Box type |
Double-door model with metering compartment (distribution cabinet, metering cabinet); single-door model without metering cabinet (optional). |
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| Installation method |
Wall-mounted |
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| Box dimensions (length × width × height) |
Customized on demand |
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