1.5kVA Wall Mount Automatic Voltage Regulator

The AVS-1500P is engineered specifically for inductive loads like refrigeration compressors, which draw high inrush current during start-up. The 1.5KVA Wall Mount Automatic Voltage Regulator’s robust toroidal transformer and 7-tap relay system handle these surges without voltage drop, while the programmable delay (default 180s) ensures that the compressor does not restart immediately after a power cut, preventing lock-rotor conditions.

The unit’s temperature sensor embedded in the transformer coil provides over-heat protection at 120°C, and its overload cut-off at 120% load safeguards both the regulator and connected appliance. Wall-mountable and dust-resistant, it fits seamlessly into any kitchen or storage area.

With overload, over-temperature, and short-circuit protections, this unit ensures your food storage equipment operates reliably for years. At 4.2 kg and with a compact wall-mount design, it is the ideal choice for kitchens, grocery stores, and cold storage rooms.

Core Advantages

1. Compressor-Friendly Delay Protection

The 180-second delay option is specifically designed for refrigeration systems. After a power outage, the regulator waits three minutes before restoring output, allowing refrigerant pressure to equalise – this prevents the compressor from stalling and extends motor life.

2. High Surge Capability

Despite its 900W rated power, the toroidal transformer and relay network can handle brief inrush currents up to 2-3 times nominal, ensuring that your fridge starts reliably even during low-voltage periods.

3. Over-Temperature Sensing

A built-in thermistor inside the transformer coil monitors heat levels. If temperature exceeds 120°C, the unit cuts output and illuminates the “OH” LED – preventing fire hazards and transformer damage.

4. Simplified Wall-Mount Installation

Including wall-mounting brackets, the AVS-1500P (260×220×125 mm) can be installed above or beside the refrigerator, saving valuable floor space.

Product Parameter

Key Application Scenarios

1. Kitchen Refrigerators – Protect single or double-door domestic fridges.

2. Commercial Freezers – Safeguard chest freezers in butcher shops and supermarkets.

3. Cold Storage Rooms – Ensure stable voltage for walk-in coolers and display chillers.

4. Medical Refrigerators – Protect vaccine and sample storage units in clinics.

Why Choose the AVS-1500P?

The AVS 1.5KVA Wall Mount Automatic Voltage Regulator is the only model in the series with a factory-optimised delay profile for compressor motors. It is specifically recommended by KTAC for refrigeration applications, offering the right balance of power, delay, and protection. Its focus on inductive loads sets it apart from other general-purpose regulators.

Customization Services

KTAC offer custom input voltage ranges, output sockets, and branding. OEM/ODM services include packaging design and label printing.

FAQ

1. Can I use the AVS 1.5KVA Wall Mount Automatic Voltage Regulator for a washing machine?

Yes, if the total wattage stays under 900W and the delay is set to 180s to protect the motor.

2. What happens if the fridge draws more than 900W?

The overload protection will cut off at 120% load (1080W). Please choose a higher model if your fridge has a larger compressor.

3. Does the regulator consume power when idle?

It consumes a small standby current (<5W) to power the control circuit, which is negligible compared to the fridge’s consumption.

4. Why is the 180-second delay particularly important for refrigerators and freezers?

Refrigerator and freezer compressors operate on a closed-loop refrigeration cycle. When the power is interrupted and then restored immediately, the compressor attempts to restart while high-pressure refrigerant is still present in the system. This creates a lock-rotor condition where the motor cannot turn, drawing 5 to 8 times the normal running current. The 180-second delay allows the refrigerant pressure to equalise across the system, enabling the compressor to restart smoothly and preventing premature motor burnout. This is the primary reason the AVS-1500P is factory-recommended for refrigeration applications.

5. Can the AVS-1500P be used for a refrigerator with a digital inverter compressor?

Yes. Inverter compressors are generally more tolerant of voltage fluctuations than traditional fixed-speed compressors, but they still benefit from voltage stabilisation. The AVS-1500P's ±8% regulation ensures that the inverter control board receives stable power, preventing error codes and extending the life of the electronic controller. The 180-second delay remains beneficial for inverter models as well, as they also require pressure equalisation before restarting.

6. What is the difference between the AVS-1500P and using a standard surge protector for my refrigerator?

A standard surge protector only clamps voltage spikes (transients) and offers no protection against brownouts (low voltage), overvoltage, or prolonged sags. The AVS-1500P actively regulates voltage across a wide input range (100-270VAC) using its 7-tap relay system, maintaining stable output even when grid voltage drops by 30% or rises by 20%. It also provides the critical 180-second delay protection that no surge protector offers. For refrigeration equipment, active voltage regulation and delay protection are far more important than simple surge clamping.

7. How do I know if the AVS 1.5KVA Wall Mount Automatic Voltage Regulator is properly sized for my refrigerator?

Check your refrigerator's nameplate for the rated power (in watts) or current (in amps). Multiply the current by the nominal voltage to get the approximate wattage. For example, a refrigerator drawing 3A at 220V consumes approximately 660W. The AVS-1500P is rated at 900W continuous, leaving a 30% margin for startup surge. We recommend that the running power of your refrigerator does not exceed 800W to allow adequate headroom for the start-up current. If the running power exceeds 800W, please consider the AVS-2000P or higher.