Residential Inverter丨Off-Grid And On-Grid丨BK-VII-5KVA

Product Overview

The BK-VII-5KVA is a wall-mounted hybrid (on/off-grid) all-in-one inverter that combines an 80 A MPPT solar charger, pure-sine-wave inverter, smart 48 V battery manager and seamless transfer switch in a single 12 kg, 480 × 310 × 125 mm chassis. It automatically switches between on-grid feed-in and off-grid backup, supports up to 9 units in parallel (45 kW total), and can be commissioned on a wall in 30 minutes—delivering 24-hour reliable green power for homes, small businesses and micro-grids.

Application

• Premium villas & estates

10–20 KWh battery bank + 5 KW hybrid inverter for 70–90 % self-consumption and net-metering.

• Small businesses

Clinics, EV charging stations—sell surplus power to the grid while enjoying seamless backup during outages.

• Off-grid micro-grids

Rural villages, islands, telecom shelters—can run entirely on solar + battery or blend with gensets.

• Emergency & construction sites

Hybrid mode with generator for peak-shaving, cutting fuel use by 30 % and reducing noise.

• Retrofit projects

Easily upgrades existing grid-tie systems to add battery storage and blackout protection.

Product Features

• Dual-mode operation

• Grid-tie: 220/230/240 V, 21.7 A max feed-in, >0.99 power factor, 95 % CEC efficiency.

• Off-grid: 93 % battery-to-AC efficiency, 10 ms UPS-grade transfer, zero downtime for critical loads.

• Ultra-wide MPPT

• 120–430 V DC input range, 5 KW PV power, single tracker 80 A—harvests energy even on cloudy days.

• 2× surge capability

• Delivers up to 10 KVA for 5 seconds, effortlessly starting air-conditioners, pumps and tools.

• 48 V battery platform

• Lead-acid, AGM or Li-ion compatible; 80 A MPPT + 80 A AC charging currents for fast, balanced charging.

• Scalability & safety

• Parallel up to 9 units (45 KW) via RS485; optional external safety module for arc-fault and rapid shutdown compliance.

• Smart connectivity

• USB, RS232 and dry contacts ready; Wi-Fi/4G dongle (optional) for cloud monitoring and OTA firmware updates.

• Rugged design

• –10 °C to +50 °C full-power operation; washable dust filter; CE certified for global markets.

Specifications