1. Introduction
This manual provides essential information for the safe and efficient operation of your Kemot URZ3426 MSER-1000 Automatic Voltage Regulator. This device is designed to protect your electronic equipment from voltage fluctuations by providing a stable output voltage. Please read this manual thoroughly before installation and use, and retain it for future reference.
2. Safety Instructions
Observe the following safety precautions to prevent injury and damage to the device or connected equipment:
- Indoor Use Only: This device is designed for indoor use in dry environments. Do not expose it to rain, moisture, or excessive humidity.
- High Voltage: This unit operates with high voltage. Only qualified personnel should open or attempt to service this device.
- Proper Grounding: Ensure the device is connected to a properly grounded electrical outlet.
- Ventilation: Do not block ventilation openings. Ensure adequate airflow around the unit to prevent overheating.
- Overload Protection: Do not exceed the maximum rated capacity of 1000 VA. Overloading can damage the regulator and connected devices.
- Placement: Place the regulator on a stable, flat surface away from direct sunlight, heat sources, and flammable materials.
- Switching Sequence: Always switch on the voltage regulator before switching on any connected appliances.
- Children and Pets: Keep the device out of reach of children and pets.
3. Product Features
The Kemot URZ3426 MSER-1000 Automatic Voltage Regulator offers the following key features:
- Servo Motor Technology: Provides precise and stable voltage regulation.
- LED Display: Clearly shows input and output voltage status.
- Switch-on Delay: Features a 6-second delay to protect connected equipment during power-up.
- High Accuracy: Maintains output voltage with an accuracy of +/- 3%.
- Comprehensive Protection: Includes protection against high temperature, high voltage, and short circuits.
- Dual Output Sockets: Equipped with two output sockets (German/French type) for connecting multiple devices.
- Wide Application: Suitable for computers, lighting equipment, sound equipment, televisions, and other office equipment.
4. Product Overview

Figure 1: Front Panel. This image displays the front of the Kemot URZ3426 MSER-1000 Automatic Voltage Regulator, showing the LED display for input and output voltage, status indicators (Normal Working, Time Delay, Overheat, Unusual), and the main power switch (ON/OFF).

Figure 2: Rear Panel. This image shows the rear panel of the Kemot URZ3426 MSER-1000 Automatic Voltage Regulator, featuring two output sockets, a circuit breaker button, and the AC input power cord connection. Important caution labels regarding high voltage and indoor use are also visible.
5. Setup Instructions
- Unpacking: Carefully remove the voltage regulator from its packaging. Inspect the unit for any signs of damage.
- Placement: Place the regulator on a stable, level surface in a well-ventilated area, away from direct sunlight, heat, and moisture.
- Connect Input Power: Plug the AC input power cord of the regulator into a standard, grounded wall outlet.
- Connect Devices: Plug your electronic devices (e.g., computer, TV, audio equipment) into the output sockets on the rear panel of the voltage regulator. Ensure the total power consumption of all connected devices does not exceed 1000 VA.
- Initial Power On: Flip the main power switch on the front panel to the "ON" position. The LED display will illuminate, and the "Time Delay" indicator may light up for approximately 6 seconds before the "Normal Working" indicator activates.
- Power On Connected Devices: After the regulator indicates "Normal Working," you can switch on your connected electronic devices.
6. Operating Instructions
The Kemot URZ3426 MSER-1000 operates automatically to maintain a stable output voltage.
- Power Switch: The red switch on the front panel controls the main power to the unit. "ON" for operation, "OFF" to power down.
- LED Display: The digital display shows the current input voltage (left) and output voltage (right).
- Status Indicators:
- Normal Working: Indicates the regulator is operating correctly and providing stable output.
- Time Delay: Illuminates during the 6-second power-on delay or after a power interruption, protecting devices from immediate voltage surges.
- Overheat: Indicates the unit is overheating. Disconnect devices and allow the unit to cool down.
- Unusual: Indicates an abnormal operating condition, such as extreme input voltage or an internal fault.
- Automatic Regulation: The servo motor automatically adjusts the output voltage to 230 VAC (+/- 3%) when the input voltage is within the range of 130-260 VAC.
7. Maintenance
The Kemot URZ3426 MSER-1000 requires minimal maintenance.
- Cleaning: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Ventilation: Periodically check that the ventilation openings are clear of dust and debris.
- Storage: If storing the unit for an extended period, ensure it is kept in a cool, dry place, away from direct sunlight and extreme temperatures.
8. Troubleshooting
If you encounter issues with your voltage regulator, refer to the following table:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to the unit. | Power switch is OFF. Power cord is not connected. Wall outlet has no power. Circuit breaker tripped. | Flip power switch to ON. Ensure power cord is securely plugged in. Test wall outlet with another device. Check and reset the circuit breaker on the rear panel (if tripped). |
| "Time Delay" indicator remains on. | Normal operation during power-up or after interruption. Persistent unstable input voltage. | Wait for 6 seconds. If it persists, check input voltage stability. If input voltage is highly unstable, the unit may continuously delay. |
| "Overheat" indicator is on. | Unit is overloaded. Insufficient ventilation. | Disconnect some devices to reduce load. Ensure ventilation openings are clear and unit has adequate space. Allow to cool. |
| "Unusual" indicator is on. | Extreme input voltage (outside 130-260 VAC). Internal fault. | Check input voltage. If it's outside the operating range, the unit cannot regulate. If input voltage is normal, power off the unit, disconnect, and contact support. |
| Connected devices not receiving power. | Regulator is OFF or in delay mode. Devices not properly plugged in. Regulator circuit breaker tripped. | Ensure regulator is ON and "Normal Working" indicator is lit. Check connections to output sockets. Reset the circuit breaker on the rear panel. |
If the problem persists after attempting these solutions, please contact Kemot customer support.
9. Technical Specifications
| Parameter | Value |
|---|---|
| Model | URZ3426 - MSER-1000 |
| Capacity | 1000 VA |
| AC Input Voltage | 130-260 VAC |
| AC Input Frequency | 50 Hz |
| AC Output Voltage | 230 VAC |
| Output Frequency | 50 Hz |
| Accuracy | +/- 3% |
| Efficiency | 98% |
| Transformer Type | C.R.G.O. Ring core transformer |
| Output Sockets | 2 (German/French type) |
| Protection | High temperature, High voltage, Short circuit |
| Operating Temperature | 0 - 40°C |
| Humidity | 10 - 90% |
| Storage Temperature | -15 - 45°C |
| Dimensions (L x W x H) | 22.8 x 14.7 x 13 cm |
| Weight | 5.1 kg |
| Material | Metal |
10. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official Kemot website. Keep your proof of purchase for warranty claims.