1. Introduction
This manual provides essential information for the safe and efficient operation of your Kemot Automatic Voltage Stabilizer SER-1000-S. This device is designed to protect your electronic equipment from voltage fluctuations, ensuring a stable power supply. 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 or damage to the device and connected equipment:
- Do not open the device casing. There are no user-serviceable parts inside. Refer all servicing to qualified personnel.
- Ensure the device is placed in a well-ventilated area, away from direct sunlight, heat sources, and moisture.
- Do not operate the device in environments with excessive dust or corrosive gases.
- Connect the device only to a properly grounded power outlet.
- Do not overload the stabilizer. Ensure the total power consumption of connected devices does not exceed the stabilizer's capacity (1000VA).
- Keep children and pets away from the device.
- If the device emits smoke, unusual odors, or makes abnormal noises, immediately disconnect it from the power supply and contact customer support.
3. Product Overview
The Kemot SER-1000-S is an automatic voltage regulator designed to provide stable 230V AC output. It features a toroidal transformer for efficient regulation and multiple protection mechanisms.
3.1 Front Panel
Figure 1: Front view of the Kemot SER-1000-S Automatic Voltage Stabilizer. It shows the digital LED display for input/output voltage, status indicators, the Kemot logo, model number URZ3438-1000-S, capacity (1000VA), input/output specifications, and a blue button for delay/undelay function.
- LED Display: Shows real-time input and output voltage.
- Indicators: Lights for Input, Output, Overload, and Warning.
- Delay/Undelay Button: Controls the output delay function (180 or 6 seconds).
3.2 Rear Panel
Figure 2: Rear view of the Kemot SER-1000-S Automatic Voltage Stabilizer. It features an ON/OFF power switch, a replaceable fuse, two output sockets, and a fixed input power cable.
- ON/OFF Switch: Main power control for the unit.
- Output Sockets: Two standard power outlets for connecting electronic devices.
- Fuse: Overcurrent protection. Replace only with a fuse of the same type and rating.
- Input Power Cable: Connects the stabilizer to the main power supply.
4. Specifications
| Feature | Specification |
|---|---|
| Model | SER-1000-S (URZ3438-1000-S) |
| Capacity | 1000VA |
| Input Voltage Range | 150 - 270 V AC |
| Input Frequency | 50/60 Hz |
| Output Voltage | 230 V AC |
| Output Precision | ±8% |
| Output Frequency | 50/60 Hz |
| Output Type | Single Phase |
| Transformer Type | IE Transformer |
| Efficiency | 98% |
| Protections | Overvoltage, Undervoltage, Overload, Overheating, Short-circuit |
| Delay Function | No Delay / Delay (180/6 seconds) |
| Operating Temperature | 0°C ~ 40°C |
| Relative Humidity | 10% ~ 90% |
| Storage Temperature | -15°C ~ 45°C |
| Weight | 2 kg |
| Dimensions (L x W x H) | 90 x 179 x 112 mm |
5. Setup
- Unpacking: Carefully remove the stabilizer from its packaging. Inspect for any signs of damage.
- Placement: Place the stabilizer on a stable, flat surface in a well-ventilated area. Ensure there is adequate space around the unit for heat dissipation.
- Connect Input: Plug the stabilizer's input power cable into a grounded wall outlet.
- Connect Devices: Plug your electronic devices (e.g., TV, computer, audio system) into the output sockets on the rear panel of the stabilizer. Ensure the total load does not exceed 1000VA.
- Power On: Flip the ON/OFF switch on the rear panel to the 'ON' position. The LED display on the front panel will illuminate.
Figure 3: Illustrative diagram of the Kemot SER-1000-S providing stable power to multiple electronic devices, including a refrigerator, computer, laptop, and speakers, highlighting its protective function.
6. Operation
6.1 Powering On and Off
- To power on, ensure all connections are secure, then switch the ON/OFF button on the rear panel to 'ON'.
- To power off, switch the ON/OFF button to 'OFF'.
6.2 Understanding the LED Display
The digital LED display continuously shows the input and output voltage. During voltage regulation, you may observe the output voltage stabilizing at 230V AC (±8%) even if the input voltage fluctuates.
Figure 4: A graph demonstrating the effect of the Automatic Voltage Regulator (AVR). The dashed red line shows fluctuating AC voltage, while the solid blue line shows the stabilized output voltage maintained by the AVR within the operational range, preventing over and under voltage conditions.
6.3 Delay Function
The stabilizer includes a delay function to protect connected equipment from rapid power cycling or unstable voltage immediately after power restoration. Press the blue button on the front panel to toggle between 'No Delay' and 'Delay' (180 or 6 seconds).
- Delay (180/6 seconds): When enabled, the output will be supplied after a short delay (either 6 or 180 seconds, depending on the setting) once the input voltage stabilizes. This is recommended for sensitive electronics like refrigerators or air conditioners.
- No Delay: Output is supplied immediately upon stable input voltage.
7. Protections and Indicators
The SER-1000-S is equipped with several protection features:
- Overvoltage Protection: Automatically shuts down the output if the input voltage exceeds safe limits.
- Undervoltage Protection: Automatically shuts down the output if the input voltage drops below safe limits.
- Overload Protection: Activates if the total power consumption of connected devices exceeds the stabilizer's capacity. The 'Overload' indicator will light up.
- Overheating Protection: Shuts down the unit if internal temperature becomes too high.
- Short-circuit Protection: Protects against short circuits in connected devices.
When a protection mechanism is triggered, the corresponding indicator light on the front panel will illuminate, and the output may be cut off. Disconnect the load, resolve the issue, and then restart the stabilizer.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Stabilizer does not power on. | No input power; ON/OFF switch is off; Blown fuse. | Check wall outlet; Ensure switch is 'ON'; Check and replace fuse if necessary (refer to Section 3.2). |
| No output power, 'Overload' indicator is on. | Connected load exceeds 1000VA capacity. | Reduce the number of connected devices or replace with lower power consumption devices. Restart the stabilizer. |
| No output power, 'Warning' indicator is on. | Input voltage is outside the 150-270V AC range; Overheating. | Wait for input voltage to return to normal; Ensure adequate ventilation around the unit. |
| Output voltage fluctuates significantly. | Extreme input voltage fluctuations; Faulty unit. | If input voltage is extremely unstable, consider a higher capacity stabilizer. If problem persists, contact support. |
9. Maintenance
- Keep the stabilizer clean by wiping it with a dry, soft cloth. Do not use liquid cleaners or solvents.
- Ensure ventilation openings are free from dust and obstructions.
- Regularly check the power cords for any damage.
- Store the device in a cool, dry place if not in use for an extended period.
10. Warranty and Support
The Kemot Automatic Voltage Stabilizer SER-1000-S typically comes with a 2-year warranty from the date of purchase. Please refer to your purchase documentation for specific warranty terms and conditions.
Figure 5: Product packaging for the Kemot Automatic Voltage Regulator SER-1000-S, highlighting key features such as overload protection, delay function, LED display, and a 2-year warranty.
For technical support, warranty claims, or service inquiries, please contact your retailer or the authorized Kemot service center. Do not attempt to repair the device yourself.
