Claire
Mr.Fu
Claire
China Suppliers SJKQ2Z ATS Automatic Transfer Switch for Dual Power 100A-1250A - Reliable Factory Solutions
Type Designation
| 1 | Manufacturer Code |
| 2 | Auto-Transfer Function |
| 3 | Derivative Code: (): NCCB; W Compact Type; W1: Economy Type; W2: Smart Type (Undervoltage / Phase-Loss / Off / Fire Protection) |
| 4 | Function Code: R – Grid-to-Grid (Optional); F – Grid-to-Generator; M – Terminal Type (Optional); Y – Integrated Smart Type (Off / Fire Protection / Undervoltage); N – Split Smart Type (Off / Fire Protection / Undervoltage) |
| 5 | Frame Size Current |
| 6 | Number of Poles |
| 7 | Rated Current (In) |
Setting Program Instructions
- 1. LCD Display
- 2. SET Button
- 3. Right-Shift Button
- 4. Increment Button (+)
- 5. Decrement Button (−) / Alarm
- 6. Manual Mode Button
- 7. Auto Mode Button
- 8. Dual-Off Button
Note: LCD display abbreviations: "auto-reclose" (AR), "No auto-reclose" (NAR), "SF01" must not be changed.
| Step | Key Press | Display Data | Operation | Function |
| 1 | SET | CodE | Enter setting mode | Password setup |
| 2 | >> | OodE | Press (︽ ︾) the first digit of the password | Password setup |
| 3 | >> | 80dE | Press (︽ ︾) the second digit of the password | Password setup |
| 4 | >> | 880E | Press (︽ ︾) the third digit of the password | Password setup |
| 5 | >> | 8888 | Press (︽ ︾) the fourth digit of the password | Password setup 8888 |
| 6 | >> | dddd / N-R 03s | Correct password shows Normal-Backup transfer time | Normal-Backup transfer time |
| Press (︽ ︾) to set N-R 1st-stage delay | ||||
| 7 | >> | N-R 03s | Shows Normal-Backup transfer time | Normal-Backup transfer time |
| Press (︽ ︾) to set N-R 2nd-stage delay | ||||
| 8 | >> | R-N 03s | Shows Backup-Normal transfer time | Backup-Normal transfer time |
| Press (︽ ︾) to set R-N 1st-stage delay | ||||
| 9 | >> | R-N 03s | Shows Backup-Normal transfer time | Backup-Normal transfer time |
| Press (︽ ︾) to set R-N 2nd-stage delay | ||||
| 10 | >> | SF 08s | Show dual-off time | Dual-off transfer time |
| Press to set SF 1st-stage delay | ||||
| 11 | >> | SF 08s | Show dual-off time | Dual-off transfer time |
| Press (︽ ︾) to set SF 2nd-stage delay | ||||
| 12 | >> | FFF 1 | Press (︽ ︾) to set auto-recovery (1=ON, 0=OFF) | ON / OFF |
| 13 | >> | FD 0 | Press (︽ ︾) full-auto generator mode to 0 and semi-auto model to 1 | Starter Generator |
| 14 | >> | FC 0 | Press (︽ ︾) to set priority (0=Normal, 1=Backup) | Priority setting |
| 15 | >> | H 130 | Press (︽ ︾) to set Overvoltage setting (220V × 130%) | Overvoltage setting |
| 16 | >> | L 50 | Press (︽ ︾) to set Undervoltage setting (220V × 50%) | Undervoltage setting |
| 17 | >> | NA 220V | Press (︽ ︾) to calibrate Normal Phase-A voltage | Show live voltage |
| 18 | >> | NB 220V | Press (︽ ︾) to calibrate Normal Phase-B voltage | Show live voltage |
| 19 | >> | NC 220V | Press (︽ ︾) to calibrate Normal Phase-C voltage | Show live voltage |
| 20 | >> | RA 220V | Press (︽ ︾) to calibrate Backup Phase-A voltage | Show live voltage |
| 21 | >> | RB 220V | Press (︽ ︾) to calibrate Backup Phase-B voltage | Show live voltage |
| 22 | >> | RC 220V | Press (︽ ︾) to calibrate Backup Phase-C voltage | Show live voltage |
| 23 | >> | SAVE | Save data |
Product Display
Technical Parameters
| Model | Circuit Breaker Model | Rack Current (A) | Rated Operational Current |
| SJKQ2Z-100/3 | SJKM1 series | 100 225 400 630 800 1250 |
10 / 16 / 20 / 25 / 32 / 40 / 50 / 63 / 80 / 100 |
| SJKQ2Z-100/4 | |||
| SJKQ2Z-225/3 | 100 / 125 / 140 / 160 / 180 / 200 / 225 | ||
| SJKQ2Z-225/4 | |||
| SJKQ2Z-400/3 | 250 / 315 / 350 / 400 | ||
| SJKQ2Z-400/4 | |||
| SJKQ2Z-630/3 | 400 / 500 / 630 | ||
| SJKQ2Z-630/4 | |||
| SJKQ2Z-800/3 | 630 / 700 / 800 | ||
| SJKQ2Z-800/4 | |||
| SJKQ2Z-1250/3 | 800 / 1000 / 1250 | ||
| SJKQ2Z-1250/4 | |||
| Breaking Current (kA) | Refer to the instruction manual of the specific circuit breaker model. | ||
| Rated Operational Voltage (V) | 400V | ||
| Insulation Voltage (V) | 2500 — No flicker and no breakdown within one minute | ||
| Frequency (Hz) | 50–60 Hz | ||
| Delay Time | 0–30s Adjustable | ||
| Control Rated Operating Voltage (V) | AC 230V | ||
| Mechanical Life | 5000 times | ||
Outline and Installation Dimensions
| Size / Dimensions | W | W1 | L | L1 | H |
| SJKQ2Z-100/3P | 390 | 355 | 220 | 200 | 120 |
| SJKQ2Z-100/4P | 420 | 385 | 220 | 200 | 120 |
| SJKQ2Z-225/3P | 430 | 395 | 220 | 205 | 140 |
| SJKQ2Z-225/4P | 465 | 435 | 220 | 205 | 140 |
| SJKQ2Z-400/3P | 560 | 510 | 310 | 285 | 190 |
| SJKQ2Z-400/4P | 605 | 555 | 310 | 285 | 190 |
| SJKQ2Z-630/3P | 625 | 570 | 320 | 295 | 195 |
| SJKQ2Z-630/4P | 690 | 635 | 320 | 295 | 195 |
| SJKQ2Z-800/3P | 705 | 655 | 340 | 315 | 190 |
| SJKQ2Z-800/4P | 780 | 730 | 340 | 315 | 190 |
| SJKQ2Z-1250/3P | 730 | 675 | 480 | 365 | 280 |
| SJKQ2Z-1250/4P | 800 | 745 | 480 | 365 | 280 |
Installation and Usage Instructions
- 21: Normal Neutral Line
- 22: Alternate Neutral Line
- 23, 24: Normal Source ON Indicator Light
- 25, 26: Alternate Source ON Indicator Light
- 27, 28: Normal Source ON Indicator Light
- 29, 30: Alternate Source ON Indicator Light
- 31, 32: Duo Status Indicator Light
- 33, 34: Fire Signal Input / AC or DC 6–24V Dry
- 35, 36: Generator Contact (5A)
Frequently Asked Questions
What is the SJKQ2Z ATS Switch and what is it used for?
The SJKQ2Z is an Automatic Transfer Switch (ATS) designed for dual-power applications. It automatically transfers the load between a normal power source and a backup source (such as a generator or secondary grid supply), ensuring continuous power supply in the event of a primary source failure.
What are the available frame sizes and rated currents for the SJKQ2Z series?
The SJKQ2Z series is available in frame sizes of 100A, 225A, 400A, 630A, 800A, and 1250A, each offered in 3-pole and 4-pole configurations. Rated operational currents range from 10A up to 1250A depending on the selected model.
How do I enter the setting mode and what is the default password?
Press the SET button to enter setting mode. The display will show "CodE". Use the Right-Shift button (>>) and Increment/Decrement buttons (︽ ︾) to enter each digit of the password. The default password is 8888.
Can the transfer delay time be adjusted, and what is the adjustment range?
Yes, the transfer delay time is fully adjustable. Both Normal-to-Backup (N-R) and Backup-to-Normal (R-N) transfer times, as well as the dual-off time (SF), support two-stage delay configuration. The overall delay range is 0 to 30 seconds, adjustable through the setting program.
What is the rated operational voltage and what frequency does the SJKQ2Z support?
The SJKQ2Z ATS Switch is rated for an operational voltage of 400V AC. It supports a frequency range of 50–60 Hz, making it suitable for both international power grid standards.
What smart protection functions does the W2 derivative code offer?
The W2 smart type derivative code provides advanced protection functions including Undervoltage protection, Phase-Loss protection, Off-mode control, and Fire Protection signaling. These features make the W2 variant suitable for critical installations requiring enhanced safety and automation.