Hybrid systems carry three live sources at once — PV, battery and grid. These rules are not
advice; they are conditions of working on Kent equipment.
For trained/authorized installers only. Kent New Energy inverters carry lethal voltages and
must be installed and serviced only by qualified electrical or service personnel experienced
with such voltages.
The six absolutes
- Three sources, always assume live. PV makes voltage in any daylight, the battery is
always ready, and the grid can return without warning. Isolation means all three —
see Isolation & Shutdown.
- Stored energy after switch-off. The inverter holds residual voltage after powering off
and needs 5 minutes to discharge — wait the full 5 minutes before opening any cover.
- Never break DC under load. Do not unplug PV or battery connectors while current flows;
shut the inverter down and isolate in sequence first. DC isolators are not load-break
switches unless rated for it.
- Hot surfaces. The unit runs hot in operation — the Kent G3 heat-sink can reach 75 °C.
No touching in operation, no combustibles nearby.
- No cover, no exceptions. There are no user-serviceable parts inside; covers come off only
for Kent-authorized work after full isolation and the discharge wait.
- PPE on, metal off. Personal protective equipment through the entire job; watches and
rings off for battery work — see PPE & Tools.
Before you start any job
Common mistakes
- Trusting a dark display as “dead” — capacitors do not care what the screen shows.
- Working the DC side because “it’s only 50 volts” — battery DC at these currents welds tools
and starts fires.
- Letting an unqualified helper make connections while you supervise from a distance.
When to escalate
Related pages
