1. Увод
The Walfront STVP-936 series automatic reset over-voltagе, под-волtage, and multi-function protector is a sophisticated monitoring and auxiliary device designed for three-phase four-wire power systems and electrical equipment. This device provides comprehensive protection by instantly cutting off the power supply to prevent damage to electrical equipment when conditions such as overvoltagе, ундерволtage, or overcurrent occur. Once the line voltage returns to normal, the protector automatically restores the power supply.
This protector integrates multiple functions including over-voltagе, под-волtage, over-current, three-phase current (voltage) unbalance, phase sequence (phase dislocation), and phase-break detection. It also features fault inquiry, voltmeter and ammeter functions, and the ability to restore factory settings. The clear LCD screen provides easy access to all functions and settings.
2. Безбедносне информације
УПОЗОРЕЊЕ: Installation and maintenance should only be performed by qualified electricians in accordance with local electrical codes and regulations. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ensure power is disconnected before installation or any maintenance.
- Verify correct wiring connections for three-phase four-wire systems.
- Не користите уређај ако изгледа оштећено.
- Држите уређај даље од влаге и екстремних температура.
- The device is designed for indoor use within specified environmental conditions.
3. Производ је готовview
Слика 3.1: Предња страна view of the Walfront STVP-936 Voltage Protector, showing the LCD display and control buttons.
The STVP-936 is a compact device designed for DIN rail mounting. It features an LCD display for real-time voltage and current readings, as well as for navigating settings. Control buttons allow for adjustment of protection parameters.
Кључне карактеристике:
- Automatic reset function after fault clearance.
- Integrated protection against over-voltagе, под-волtagе, прекомерна струја.
- Three-phase current (voltage) unbalance protection.
- Phase sequence (phase dislocation) and phase-break protection.
- Fault inquiry function.
- Built-in voltmeter and ammeter.
- Factory settings restoration option.
- Clear LCD display for easy monitoring and configuration.
4. Спецификације
Figure 4.1: Dimensions of the Walfront STVP-936 Voltagе Протецтор.
| Параметар | Валуе |
|---|---|
| Врста ставке | Адјустабле Волtagе Протецтор |
| Материјал | Пластика |
| Модел | СТВП-936 |
| Ратед Волtage (Three-Phase Four-Wire) | 230V/400VAC 50/60Hz |
| Цуррент Ратинг | 1-50A подесиво (подразумевано 50A) |
| ОверволtagРаспон вредности | 221V-300V-OFF (default 280V) |
| Оверволtage Recovery Value Range | 220V- (default 250V) |
| Оверволtage Action Time | 0.1 - 10 seconds (default 0.2 seconds) |
| УндерволtagРаспон вредности | 219V-150V-OFF (default 160V) |
| Ундерволtage Recovery Value Range | 220V-151V (default 180V) |
| Ундерволtage Action Time | 0.1 - 10 seconds (default 0.2 seconds) |
| Overcurrent Action Time | 1 - 512 seconds (default 5 seconds) |
| Тхрее-Пхасе Волtage Unbalance Value Range | 5%-90%-OFF (default 25%) |
| Пхасе Волtage Unbalance Action Time | 0.1 - 10 seconds (default 2.0 seconds) |
| Power-On Delay Time | 2 - 255 seconds (default 2 seconds) |
| Време кашњења опоравка од грешке | 2 - 512 seconds (default 60 seconds) |
| Потрошња енергије | ≤3ВА |
| Режим приказа | ЛЦД |
| Electrical Isolation Strength | >2000VAC, pulse 2.5KV 1.2/50μS |
| Температура радног окружења | -20℃ ~ 50℃ |
| Влажност радног окружења | <85% |
| Working Environment Altitude | Не више од 2000 метара |
| Приближне димензије (Д x Ш x В) | 70 к 95 к 65 мм (2.8 к 3.7 к 2.6 инча) |
| Тежина артикла | 13.5 унци |
5. Подешавање и инсталација
The Walfront STVP-936 is designed for DIN rail mounting within an electrical enclosure. Ensure the enclosure provides adequate ventilation and protection from environmental factors.
Слика 5.1: Предња страна view showing the 'IN' (input) and 'OUT' (output) terminals for wiring.
Упутства за ожичење:
- Искључивање струје: Before beginning any wiring, ensure that the main power supply to the circuit is completely disconnected and locked out to prevent accidental re-energization.
- Монтажа: Mount the STVP-936 onto a standard DIN rail securely.
- Input Wiring (IN terminals):
- Connect the incoming three-phase power lines (L1, L2, L3) and the Neutral line (N) to the corresponding 'IN' terminals at the top of the device.
- Уверите се да су сви спојеви чврсти и безбедни како бисте спречили лабаве контакте и прегревање.
- Output Wiring (OUT terminals):
- Connect the protected load's three-phase power lines (L1, L2, L3) and the Neutral line (N) to the corresponding 'OUT' terminals at the bottom of the device.
- Verify that the load's current requirements do not exceed the device's maximum current rating (50A for this model).
- уземљење: Ensure proper grounding of the electrical system as per local codes.
- Верификација: Double-check all wiring connections for correctness and tightness before restoring power.
Слика 5.2: Одозго надоле view illustrating the terminal block layout for wiring connections.
6. Упутство за употребу
After successful installation and power-up, the device's LCD will display real-time voltage and current readings. The device is pre-configured with default settings, but these can be adjusted to suit specific application requirements.
Figure 6.1: Close-up of the LCD display and control buttons (SET, Up, Down).
Екран и контроле:
- ЛЦД екран: Приказује јачину звука у реалном временуtage (V), current (A), and various protection parameters during configuration.
- СЕТ дугме: Used to enter the setting mode and confirm parameter changes.
- Дугмад за горе/доле: Used to navigate through settings and adjust parameter values.
Подешавање параметара:
- Притисните и држите СЕТ button for a few seconds to enter the parameter setting mode.
- Користите Up и Доле buttons to scroll through the different adjustable parameters (e.g., Overvoltage Value, Undervoltage Value, Overcurrent Action Time, etc.).
- Када се прикаже жељени параметар, притисните дугме СЕТ button briefly to select it for adjustment.
- Користите Up и Доле buttons to change the value of the selected parameter.
- Притисните тастер СЕТ button again to confirm the new value and move to the next parameter, or to exit the setting mode if no further changes are needed.
- If no buttons are pressed for a certain period, the device may automatically exit the setting mode and save changes.
Refer to the Specifications section (Section 4) for the default values and adjustable ranges of each parameter.
Fault Inquiry and Reset:
- The device automatically detects faults and disconnects power. The LCD will typically display the type of fault.
- After a fault condition clears and the recovery delay time (default 60 seconds) has passed, the device will automatically reset and restore power.
- To inquire about past faults, consult the device's specific menu options using the SET and Up/Down buttons.
- To restore factory settings, there is usually a specific sequence or menu option. Refer to the on-screen prompts or a more detailed manufacturer's guide if available.
7. Одржавање
The Walfront STVP-936 Voltage Protector is designed for minimal maintenance. However, regular checks can ensure optimal performance and longevity.
- Визуелни преглед: Периодично проверавајте уређај да ли има знакова физичког оштећења, промене боје или лабавих веза.
- Чишћење: Keep the device clean and free from dust. Use a dry, soft cloth for cleaning. Do not use liquid cleaners or solvents.
- Провере везе: Ensure all wiring connections remain tight and secure. Loose connections can lead to overheating and device malfunction.
- Услови животне средине: Проверите да ли радно окружење остаје у наведеним опсезима температуре и влажности.
- Тест функционалности: If possible and safe to do so, periodically test the protection functions by simulating a fault condition (e.g., temporarily reducing voltage if a test setup is available) to ensure the device responds correctly. This should only be done by qualified personnel.
Не покушавајте сами да отворите или поправите уређај. Све сервисирање препустите квалификованом особљу.
КСНУМКС. Решавање проблема
This section provides guidance for common issues. For problems not listed here, contact technical support.
| Проблем | Могући узрок | Решење |
|---|---|---|
| Уређај се не укључује. | Нема улазног напајања; неисправно ожичење; унутрашња грешка. | Check main power supply. Verify input wiring (L1, L2, L3, N). If power is present and wiring is correct, the device may be faulty. |
| Уређај се често искључује. | Волtage fluctuations (over/under); overcurrent condition; phase unbalance; incorrect settings. | Monitor line voltage and current. Check load for overcurrent. Verify protection parameter settings (overvoltagе, ундерволtage, overcurrent, unbalance thresholds). Adjust settings if necessary, ensuring they are appropriate for your system. |
| Device does not reset after fault clears. | Fault condition still present; recovery delay time not elapsed; internal fault. | Ensure the fault condition (e.g., overvoltage) has genuinely cleared. Wait for the configured failure recovery delay time to elapse. If the issue persists, power cycle the device (if safe) or contact support. |
| LCD display is blank or erratic. | No power; display fault; internal malfunction. | Check power supply. If power is present, try power cycling the device. If the problem persists, the device may require servicing. |
| Cannot adjust settings. | Incorrect button sequence; device locked. | Ensure you are pressing and holding the SET button correctly to enter setting mode. Follow the operating instructions precisely. |
9. Гаранција и подршка
Specific warranty information for the Walfront STVP-936 Voltage Protector is not provided in this manual. Please refer to the product packaging, your purchase documentation, or contact your retailer or Walfront customer service for details regarding warranty coverage and terms.
For technical support, troubleshooting assistance beyond this manual, or inquiries about replacement parts, please contact Walfront customer support through their official webсајт или контакт информације које сте добили уз куповину.