1. Танилцуулга
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your EARU Electric 3-Phase Auto Transfer Switch (ATS) - 440V 63A. Please read this manual thoroughly before installation and operation to ensure proper functionality and to prevent damage or injury.
The ATS is designed to provide uninterrupted power by automatically transferring loads between phases in a three-phase supply system. It features intelligent monitoring and protection against phase failure, over/under voltage, and overcurrent conditions, ensuring the stability and safety of connected equipment.
2. Аюулгүй байдлын мэдээлэл
АНХААРУУЛГА: Цахилгаанд цохиулах аюул. Суурилуулалт болон засвар үйлчилгээг зөвхөн мэргэшсэн ажилтнууд гүйцэтгэнэ.
- Always disconnect power before installing or servicing the ATS.
- Бүх утаснууд нь орон нутгийн болон үндэсний цахилгааны кодуудтай нийцэж байгаа эсэхийг шалгаарай.
- Зөв боть шалгана ууtagтөхөөрөмжийг холбохоос өмнө e ба одоогийн үнэлгээ.
- Хэрэв төхөөрөмж эвдэрсэн мэт байвал түүнийг ажиллуулж болохгүй.
- Хүүхдийг цахилгаан хэрэгслээс хол байлга.
3. Бүтээгдэхүүн дууссанview
The EARU Electric 3-Phase ATS is an intelligent device that continuously monitors your three-phase power supply. It automatically switches single-phase loads to a healthy phase in case of a phase failure or imbalance, ensuring continuous operation of critical equipment.
3.1. Багцын агуулга
- 1 x EARU Electric 3-Phase Auto Transfer Switch (ATS)
3.2. Front Panel and Indicators

Зургийн тайлбар: The front panel of the ATS features a digital display showing voltage for L1, L2, L3 phases and current for L1. Below the display are indicators for Power, Over-voltage (>V), Under-voltage (<V), and Over-current (>I). Control buttons include 'SET' (Menu key), 'Digit+/Up', 'Digit-/Down', and 'Manual ON/OFF' (Power button).
The digital display provides real-time voltage readings for each phase (L1, L2, L3) and the current for L1. Status indicators alert you to the operational state and any detected faults:
- Эрчим хүч: Output indication.
- >V: Хэт их ботьtage заалт.
- <V: Боть ботьtage заалт.
- >Би: Over-current indication.
Control buttons allow for parameter settings and manual operation:
- Тохируулах: Menu key for accessing settings.
- Digit+/Up: Increases value or navigates up in menus.
- Digit-/Down: Decreases value or navigates down in menus.
- Гараар асаах/унтраах: Power button for manual control.
4. Тохиргоо ба суурилуулалт
The ATS is designed for standard DIN rail mounting. Ensure sufficient space for ventilation and wiring connections.
4.1. Утасны диаграм

Зургийн тайлбар: A detailed wiring diagram illustrates the connection points for the ATS. The top terminals are labeled 'IN' with connections for N, L1, L2, L3. The bottom terminals are labeled 'OUT' with connections for N and L1. The diagram shows how to connect the three-phase input to the ATS and how a single-phase load (L1 and N) is connected to the output, with internal connections for phase monitoring and switching.
Follow the wiring diagram carefully. Incorrect wiring can lead to device malfunction or electrical hazards.
- Connect the incoming three-phase power supply (N, L1, L2, L3) to the 'IN' terminals.
- Connect the single-phase load (N, L1) to the 'OUT' terminals. The ATS will manage the phase transfer for the L1 output.
- Ensure all connections are secure and tightened to prevent loose contacts and overheating.
4.2. Анхны эрчим хүч
After completing the wiring, restore power to the system. The ATS will power on and begin monitoring the phases. The digital display will show the current voltage readings for each phase. If all phases are stable and within acceptable limits, the ATS will provide power to the output.
5. Ашиглалтын заавар
The ATS operates automatically, but you can adjust its protection parameters to suit your specific requirements.
5.1. Дэлгэц ба үзүүлэлтүүдийн тухай ойлголт
The digital display continuously shows the real-time voltage of each phase (L1, L2, L3) and the current on L1. The indicator lights provide quick visual feedback on the device's status and any detected anomalies.

Зургийн тайлбар: Ойрын зураг view of the ATS digital display. It shows '220V' for L1, L2, and L3, and '63.0A' for L1 current. Below these readings are small indicator icons for Power, >V (Over-voltage), <V (Under-voltage), and >I (Over-current).
5.2. Adjusting Protection Parameters
Use the 'SET' button to enter the parameter setting mode. Use the 'Digit+/Up' and 'Digit-/Down' buttons to navigate through settings and adjust values. Press 'SET' again to confirm and save changes.
| Параметр | Тохиргооны хүрээ | Өгөгдмөл тохиргоо |
|---|---|---|
| Over Current Protection Setting Range | 1-63А/100А | 30 А |
| Continuous Over Current Protection Times | 0-20 удаа | OFF |
| Боть гаруйtage Protection Setting Range | 230-300 В | 270 В |
| Боть гаруйtage Protection Recover Setting Range | 225-295 В | 265 В |
| Боть дорtage Protection Setting Range | 140-210 В | 170 В |
| Боть дорtage Protection Recover Setting Range | 145-215 В | 175 В |
| Ботьtage & Current Protection Recover Delay | 1-500 он | 30-иод он |
5.3. Automatic Phase Transfer
The ATS automatically monitors the three input phases (L1, L2, L3). If a phase failure or significant voltage imbalance (over/under voltage) is detected on the currently supplying phase, the device will automatically transfer the single-phase output load to a healthy, stable phase within the same supply. This process is designed to be seamless and rapid, minimizing power interruption to connected equipment.
5.4. Automatic Recovery
Once the primary phase recovers and stabilizes, the ATS will intelligently switch the load back to the primary source, ensuring optimal power distribution and preventing equipment damage from unstable power. The recovery delay can be configured as per your operational needs.
6. Засвар үйлчилгээ
The EARU Electric ATS is designed for minimal maintenance. However, periodic checks are recommended to ensure optimal performance and longevity.
- Цэвэрлэгээ: Keep the device clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Холболтын шалгалт: Periodically inspect all wiring connections to ensure they remain tight and free from corrosion.
- Байгаль орчны нөхцөл: Ашиглалтын орчин нь тогтоосон температур, чийгшлийн хязгаарт байгаа эсэхийг шалгаарай.
7. Алдаа засах
If you encounter issues with your ATS, refer to the following common problems and solutions:
| Асуудал | Боломжит шалтгаан | Шийдэл |
|---|---|---|
| Цахилгаан гаралт байхгүй | No input power; all phases unstable; device in fault state. | Check incoming power supply. Verify all phases are stable. Check fault indicators. |
| ">V" or "<V" indicator lit | Хэт их ботьtage эсвэл бага ботьtage detected on a phase. | Оруулсан боть шалгахtage stability. The ATS will automatically transfer if another phase is healthy. |
| ">I" indicator lit | Over-current detected on the output. | Reduce load on the output. Check for short circuits in the connected equipment. |
| Device not transferring phases | No healthy alternative phase available; transfer delay setting too long. | Ensure at least one healthy phase is present. Check and adjust the transfer delay settings. |
| Дижитал дэлгэц ажиллахгүй байна | No power to the device; internal fault. | Check power supply. If power is present and display is off, contact support. |
For issues not covered here, please contact EARU customer support.
8. Техникийн үзүүлэлтүүд

Зургийн тайлбар: This image displays the physical dimensions of the ATS (90mm width, 96mm height, 66mm depth) and a table of detailed technical specifications, including current rating, voltage, frequency, and various protection setting ranges.
| Онцлог | Дэлгэрэнгүй |
|---|---|
| Брэнд | EARU |
| Загварын дугаар | EARU-1012 |
| Үйлдлийн горим | АСААХ, УНТРААХ |
| Одоогийн үнэлгээ | 63 Amps |
| Үйл ажиллагааны ботьtage | 440 Volts (AC 3*220V (N-L1/L2/L3)) |
| Нэрлэсэн давтамж | 50/60 Гц |
| Холбоо барих төрөл | Ер нь нээлттэй |
| Холбогч төрөл | Standard DIN rail 63A |
| Хэлхээний төрөл | 4 чиглэлтэй |
| Холбоо барих материал | Зэс |
| Over Current Protection Setting Range | 1-63A/100A (Default 30A) |
| Continuous Over Current Protection Times | 0-20 Times (Default OFF) |
| Боть гаруйtage Protection Setting Range | 230-300V (Default 270V) |
| Боть гаруйtage Protection Recover Setting Range | 225-295V (Default 265V) |
| Боть дорtage Protection Setting Range | 140-210V (Default 170V) |
| Боть дорtage Protection Recover Setting Range | 145-215V (Default 175V) |
| Ботьtage & Current Protection Recover Delay | 1-500s (Default 30s) |
| Зүйлийн жин | 450 гр |
| Багцын хэмжээ | 15 x 15 x 15 см |
| Гарал үүслийн улс | Энэтхэг |
9. Баталгаат хугацаа ба дэмжлэг
9.1. Баталгаат хугацааны мэдээлэл
The EARU Electric 3-Phase Auto Transfer Switch (ATS) comes with a 1 жилийн үйлдвэрлэгчийн баталгаа from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by improper installation, misuse, accidents, or unauthorized modifications.
9.2. Хэрэглэгчийн дэмжлэг
For technical assistance, warranty claims, or any questions regarding your EARU Electric ATS, please contact your retailer or the manufacturer directly. Ensure you have your product model number (EARU-1012) and proof of purchase available when contacting support.