Aşırı Gerilim ve Düşük Gerilim Koruyuculu EXUR7P-2 ATS
Two Supplies, One Decision — Intelligent Mains-Mains / Mains-Generator Switching
The EXUR7P-2 is a DIN-rail automatic transfer switch (ATS) for dual power systems up to 100A, supporting mains-to-mains and mains-to-generator changeover. Two physically isolated inputs feed one load through a microcontroller-based switch that checks voltage quality, applies over/under voltage and overcurrent protection, offers phase priority selection, timing functions, and WiFi monitoring — restoring supply automatically when the preferred source recovers.
Model
EXUR7P-2 Series — ATS with Overvoltage & Undervoltage ProtectorEXUR7P-2 (63A / 80A / 100A)
AC 2×110/220V · 63-100A · dual isolation · WiFi app
Ürün Detayları
- Dual-power ATS for mains-mains or mains-generator changeover, rated 63/80/100A.
- Physically isolated inputs prevent back-feeding; priority selection L1/L2 or ATO mode.
- Over/under voltage, overcurrent and temperature protection with delayed restart after recovery.
- Timer for scheduled on/off; 0.5-class metering; WiFi monitoring; DIN rail mounting.
Ürün Bilgisi
General
The EXUR7P-2 series products are applicable to rated currents of 100A and below, supporting intelligent switching between dual power supplies of mains-to-mains and mains-to-generator. The two input circuits adopt a physical isolation design, fully complying with electrical safety specifications and standards.
It features dual modes of automatic circuit switching and manual free switching for flexible and convenient use. The overvoltage and undervoltage protection thresholds can be customized; automatic power-off protection is triggered immediately when the voltage exceeds the set range. A built-in delayed restart mechanism enables automatic closing and power supply restoration after the grid voltage stabilizes. Meanwhile, it allows independent setting of the current limiting value, with automatic power-off upon overcurrent and self-recovery after fault elimination.
The complete machine integrates multiple safety protections including neutral loss, overvoltage, undervoltage and overload,comprehensively preventing hidden risks such as grid voltage fluctuations and current abnormalities. It effectively ensures the long-term stable operation of rear-end electrical equipment and avoids fault damage.
Operating Conditions
- When installing the product, the input terminal must be connected to a circuit breaker.
- After receiving the product, first connect only one power source to check if the display is normal.
- The equipment must be installed by qualified professionals.
- Before operating the device, disconnect all power supplies and do not touch any terminal when the power supply is connected.
- Verify that terminals are properly connected.
- Do not use the equipment in places that may be corroded by gas, strong sunlight and rain.
- Clean equipment with a dry cloth.
- Failure to comply with these instructions will result in serious injury or serious accident
Özellik
- Automatic Transfer Switch: with “priority” phase
- Microcontroller-based
- Digital display of working voltage, current
- Measurement accuracy is 0.5 class
- Key setting parameter
- Can set the priority phase sequence
- DIN ray montajı
Teknik Veriler
| Rated supply voltage | AC 2*110V/220V |
| Operating voltage range | AC 80-300V |
| Rated frequency | 50/60Hz |
| Hysteresis | Overvoltage:5V;Undervoltage:5V |
| Measurement accuracy | 0.5 class |
| Rated insulation voltage | 450V |
| Output contact | 1NO |
| Electrical life | 10⁵ |
| Switch delay to reserve phases | >0.2s |
| Overvoltage trip delay | 0.1s;≥350V;0.02s |
| Undervoltage trip delay | 0.1s;≥350V;0.02s |
| Mechanical life | 10⁶ |
| Protection class | IP20 |
| Kirlenme derecesi | 3 |
| Rakım | <2000m |
| Çalışma sıcaklığı | -5℃~40℃ |
| Nem | ≤50%or40℃ |
| Storage temperature | -10℃~55℃ |
| Product size | 63A:90*96*67mm;80A/100A:90*103*67mm |
| Voltage accuracy | <1% |
| Rated operating current | 63A/80A/100A |
| Max.operating current | 63A/100A |
Display Panel
Electrical Symbol Diagram
Wiring Diagram
Program Description
| Set character | Technical parameter | Set range | Default value | Step forward | Function description |
| P-1 | Power-on delay time | 1s-999s | 5s | 1s | After external power cut,the time needed for
power-on when power recovery. |
| P-2 | Recovery/Switch Time | 1s-999s | 10s | 1s |
Is the time required for the line to return to normal or switch to a working line. |
| P-3 | Timed off | OFF-0.1m-999m | OFF | 0.1m | Can be used to time off the device |
| P-4 | Timed on | ON-0.1m-999m | ON | 0.1m | The P-3 timer off parameters must be changed before the timer on parameters can be adjusted. |
| P-5 | Input phase priority
selection |
L1-L2-ATO | L1 | 1 | Operating mode:When L1 or L2 is selected,it’s a priority phase selection;ATO:Non-priority mode, fixed to the current phase. |
| P-6 | Over-voltage protection value |
120V-300V -OFF |
270V 140V | 1V | When the voltage of one phase is over the set value,the protector will cut off this phase and switch to the next phase according to the sequence set in P5.When all voltage is over the set value,the protector will cut off all lines. |
| P-7 | Under-voltage protection value |
OFF-80V-210V | 170V90V | 1V | When the voltage of one phase is under the set value, the protector will cut off this phase and switch to the next phase according to the sequence set in P5.When all voltage is under the set value,the protector will cut off all lines. |
| P-8 | Voltage calibration | ±9.9% | 0 | 0.10% | Correct the voltage error. |
| P-9 | Over-current protection value |
1A-63A/100A-
OFF |
63A 80A | 1A | When the current is higher than the set value, the protector will cut off the line.When setting OFF,the protector will turn off over-current protection function. |
| P-10 | Current calibration | ±9.9% | 0 | 0.10% | Calibrate current current value |
| P-11 | Overcurrent kesiciler action time |
0.1s-30s | 1s | 0.1s | When over current,the time needed for protection action. |
| P-12 | Times of continuous
over current |
OFF-1-20 | OFF | 1 | When the times of continuous over-current protection exceeds the set value,the protector will cut off the line, then it needs to be opened manually. |
| P-13 |
Temperature
kesiciler |
40℃-120℃ | 90℃ | 1℃ |
After temperature protection,the hysteresis value is restored to 10℃. |
Setup Menu
Fault Description
Overall and Mounting Dimensions (mm)
İşinizi Nasıl Destekliyoruz
OEM / ODM
Pre-set priority schemes, custom faceplates and wiring labels for generator-set and panel OEMs.
Priority presets · Custom faceplates · Test records
Toptan Satış
Factory-direct pricing for distributors supplying backup-power and dual-supply solutions to commercial and industrial customers.
Fabrika fiyatı · Esnek MOQ · Küresel sevkiyat
Distribütör Desteği
Application guides, wiring documentation and priority production for partners in the standby power market.
Application guides · Wiring docs · Priority lead times
Ready to Stock the EXUR7P-2 Series?
OEM/ODM, wholesale pricing and distributor support — one enquiry gets you a factory-direct quotation for automatic transfer switches in 63A, 80A and 100A, configured for your mains and generator scheme.
Sıkça Sorulan Sorular
What is an automatic transfer switch (ATS) and when is it used?
An ATS connects a load to two power sources and automatically transfers the load from the preferred source to the standby source when the first fails, then back when it recovers. The EXUR7P-2 is used with two mains feeders or a mains/generator pair in houses, shops, telecom shelters and small commercial plants that need continuity of supply without someone driving to the site to throw a changeover switch.
What is the difference between mains-mains and mains-generator operation?
Mains-mains connects two utility feeders where either can carry the load; the ATS selects by priority. Mains-generator connects the utility and a standby generator, typically with the generator started by an external controller — the ATS transfers when the grid fails and returns when it stabilises. The EXUR7P-2 supports both topologies with physically isolated inputs.
Why must each input have a circuit breaker?
The installation instructions require a breaker on the input side of the ATS. This protects the wiring and the device during fault conditions, and — critically — provides a guaranteed point of isolation for maintenance. The ATS itself provides protection functions, but it cannot replace upstream overcurrent protection.
How does the EXUR7P-2 choose which source to use?
You set the priority in the menu: L1 priority or L2 priority makes one input the preferred source that is used whenever its voltage is healthy; ATO (automatic) is a non-priority mode that stays on the current source until it fails. When the preferred source fails, the ATS checks the standby source and transfers after a minimum delay of 0.2 seconds.
What protections are built into the EXUR7P-2?
The unit combines overvoltage and undervoltage protection (with fast trip ≤350V in 0.02s), overcurrent protection with adjustable limits and an action delay, temperature protection (40-120°C), neutral-loss protection and overload safeguards. After a fault or outage it reconnects after the configured recovery delay so the load returns to a stable supply.
