| Protection | Action | |------------|--------| | Over-voltage | Disconnects output when input > 290V | | Under-voltage | Disconnects output when input < 140V | | Overload | Cuts output if load exceeds 1100 VA | | Over-temperature | Shuts down if internal temp > 75°C | | Short circuit | Fuse / electronic trip |
After fault clear, unit resets automatically (time delay active).
The manual instructs you to use the metal keyhole slots on the back of the unit. v guard du 1000 smart user manual
Here's a step-by-step guide to operating the V Guard DU 1000 Smart:
Q: Can I use the DU 1000 Smart with a 2-ton AC?
A: No. 2-ton AC typically draws 1800–2200VA. Use a V-Guard 2000VA or higher model. After fault clear, unit resets automatically (time delay
Q: Does it protect against lightning surges?
A: It provides basic surge protection (MOV). For high-risk lightning areas, add a Type-2 surge arrester at the mains.
Q: Why does the display show 250V output sometimes?
A: Smart stabilizers allow ±8% regulation. Constant 250V indicates a problem – contact service. The manual instructs you to use the metal
Q: Can I connect multiple appliances?
A: Only if total load < 1000VA. For a 1.5-ton AC (approx. 1300VA running), use only the AC alone.
The unit has built-in boost and buck functions.
The manual describes a 3-stage intelligent charging process: