1. Introduktion
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Hilitand NLQ3-125/2P Automatic Transfer Switch (ATS). This device is designed to automatically switch between a normal power supply and a standby power supply, such as a PV inverter or generator, ensuring continuous power for critical loads.
2. Sikkerhedsoplysninger
Please read all safety warnings and instructions carefully before installing or operating this device. Failure to follow these instructions may result in electric shock, fire, serious injury, or property damage.
- Installation og vedligeholdelse bør kun udføres af kvalificerede elektrikere.
- Sørg for, at alle strømkilder er afbrudt, før du udfører ledningsføring eller vedligeholdelse.
- Bekræft korrekt voltage og strømstyrkeværdier, før enheden tilsluttes.
- Betjen ikke kontakten, hvis den ser ud til at være beskadiget.
- Always use appropriate personal protective equipment (PPE).
3. Produktet er slutview
The Hilitand NLQ3-125/2P is a 110V 63A 2-pole automatic transfer switch featuring millisecond switching capabilities. It is designed for applications requiring uninterrupted power, such as in homes, shopping malls, factories, laboratories, and farms. The switch ensures continuity, reliability, and safety of the power supply by automatically transferring to a backup source when the normal supply is abnormal.
Nøglefunktioner:
- Automatisk overførsel: Seamlessly switches between normal and standby power supplies.
- Millisekundskiftning: Ensures minimal interruption to power supply.
- Holdbar konstruktion: Made from flame-retardant PC material and silver alloy contacts for good insulation and aging resistance.
- Bred anvendelse: Suitable for various environments requiring continuous power.
- Isolation and Interference Resistant: Designet til pålidelig ydeevne.
Produktkomponenter:

Figur 3.1: Front view of the Hilitand NLQ3-125/2P Automatic Transfer Switch, showing input/output terminals, manual/auto selector, and power indicators.

Figur 3.2: Top view of the Automatic Transfer Switch, highlighting the 'Normal Power A' and 'Reverse Power B' sections, along with the manual/auto switch and terminal connections.

Figur 3.3: Bund view of the Automatic Transfer Switch, showing the base and a production process label.
4. Specifikationer
| Parameter | Værdi |
|---|---|
| Produkt model | NLQ3-125/2P |
| Varetype | Dual Power automatisk overførselskontakt |
| Materiale | Flame Retardant PC, Silver Alloy |
| Switch Type | Sekundær distribution |
| Nominel strøm | 63A |
| Coil Voltage | 110V AC |
| Isolering Voltage | AC690V AC |
| Nominel voltage | AC400V AC (Note: Product title states 110V, please verify application voltage) |
| Nominel frekvens | 50/60Hz |
| Elektrisk niveau | PC Isolation Type |
| Nominel impulsmodstand Voltage | 8 KV |
| Control Circuit Rated Control Voltage os | AC110V 85% Us-110% Us |
| Hjælpekredsløb | 2 Relays, each with 2 sets of contacts capacity: AC110V50HZ le=5y |
| Pakkedimensioner | 11 x 10 x 8 cm |
| Vægt | 606 g |

Figur 4.1: Dimensions of the Hilitand NLQ3-125/2P Automatic Transfer Switch, showing approximate measurements of 109mm (4.3in) length, 97mm (3.8in) width, and 69mm (2.7in) height.
5. Opsætning og installation
Proper installation is crucial for the safe and reliable operation of the ATS. Refer to the wiring diagram and follow local electrical codes.
Kontrol før installation:
- Before installation, carefully inspect the integrity of the ATS for any physical damage.
- Use the operating handle to manually open or close the ATS. Check the flexibility of the internal transmission device.
- Test the generation and disconnection conditions of the load for both the normal and standby power supply in each phase to ensure proper functionality before final wiring.
Ledningsdiagram:

Figur 5.1: Wiring diagram for the Automatic Transfer Switch. It illustrates connections for Common Feed, Common Control Line, Back-up Line, Stand-by Control Line, and Load Output for both Normal Power A (Solar Energy) and Reverse Power B (City Power).
Installationstrin:
- Mount the ATS securely in a suitable enclosure, ensuring adequate ventilation and clearance.
- Connect the normal power supply (e.g., grid power) to the designated 'Normal Power A' input terminals.
- Connect the standby power supply (e.g., PV inverter or generator) to the designated 'Reverse Power B' input terminals.
- Connect the load to the output terminals of the ATS.
- Connect the control lines as per the wiring diagram. Ensure all connections are tight and secure.
- Double-check all wiring for correctness and adherence to safety standards before applying power.
6. Betjeningsvejledning
The NLQ3-125/2P ATS can operate in both automatic and manual modes.
Automatisk tilstand:
- Set the selector switch on the device to 'Auto'.
- In this mode, the ATS will automatically monitor the normal power supply.
- If the normal power supply fails or falls outside acceptable parameters, the ATS will automatically switch the load to the standby power supply within milliseconds.
- When the normal power supply is restored, the ATS will automatically transfer the load back to the normal power supply.
Manuel tilstand:
- Set the selector switch on the device to 'Manual'.
- In manual mode, the user can use the operating handle to switch between 'Normal Power A' and 'Reverse Power B' as needed.
- This mode is typically used for testing, maintenance, or in situations where automatic transfer is not desired.
Anvendelse Examples:

Figur 6.1: Visuel eksamples of environments where the ATS can be applied, including household electricity, shopping malls, company offices, and factories, demonstrating its versatility.

Figur 6.2: Another illustration of the ATS's broad applicability, showing it in contexts such as factories, shopping malls, nurseries, and residential buildings with solar panels, emphasizing its use where continuous power is critical.

Figur 6.3: The Automatic Transfer Switch positioned within an industrial manufacturing environment, highlighting its suitability for robust and demanding operational settings.
7. Vedligeholdelse
Regelmæssig vedligeholdelse er med til at sikre din ATS' levetid og pålidelige drift.
- Periodisk eftersyn: Regularly inspect the ATS for any signs of wear, damage, or loose connections.
- Rensning: Hold enheden ren og fri for støv og snavs. Brug en tør, blød klud til rengøring. Brug ikke flydende rengøringsmidler.
- Terminaltjek: Periodically check all terminal connections to ensure they are tight and secure. Loose connections can lead to overheating and potential failure.
- Funktionstest: Conduct periodic functional tests (in manual mode, if safe to do so) to ensure the switching mechanism operates smoothly.
- Professionel service: For any complex issues or internal inspections, consult a qualified electrician.
8. Fejlfinding
If you encounter issues with your ATS, refer to the following common problems and solutions:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| ATS skifter ikke automatisk | 1. Selector switch in 'Manual' mode. 2. No power detected on standby source. 3. Control circuit fault. | 1. Set selector switch to 'Auto'. 2. Verify standby power source is active. 3. Consult a qualified electrician. |
| Ingen strømudgang | 1. Both normal and standby power sources are off. 2. Loose wiring connections. 3. Intern fejl. | 1. Check both power sources. 2. Inspect and tighten all wiring connections (with power off). 3. Consult a qualified electrician. |
| Overheating of terminals | 1. Løse forbindelser. 2. Overbelastning. 3. Incorrect wire gauge. | 1. Tighten all terminal screws (with power off). 2. Reduce load or verify load is within rated capacity. 3. Ensure appropriate wire gauge is used for the current rating. |
For issues not listed above or if solutions do not resolve the problem, contact customer support or a qualified electrician.
9. Garanti og support
Garantioplysninger:
This Hilitand product comes with a manufacturer warranty for 90 days 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.
Kundesupport:
For technical assistance, warranty claims, or further inquiries, please contact Hilitand customer support through your retailer or the official Hilitand channels. Please have your product model number (NLQ3-125/2P) and purchase details ready when contacting support.