Intelligent high-frequency switch power supply modules are specially developed to meet the demands of modern DC system. The charger rectifiers are designed with world leading patent technology — "resonant voltage type soft switching power supply technology". They feature high efficiency and stability, intelligent control, small size, and light weight.
The products are the fifth generation, which feature higher working frequency, smaller size, and lighter weight compared with previous generations.
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Rated output voltage 220V and 110V
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RS-485 interface, easy to work with automation systems
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Applicable for electric and relevant industries
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Modular design, N+1 hot backup, smooth expansion
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Intelligent design with automatic functions via serial communication: module switch on/off, mode converting, and settings
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Standard RS-485 interface, easy integration with "4-remotes" functions
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Hot swappable components for maintenance without downtime
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High efficiency, over 93%
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Isolation automatic current sharing technology, unevenness ≤ ±3%
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Built-in output isolation diode
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LED digit display, indication lights, and front panel DIP/V-adjust button operation
| Model Item |
110D20NZ-5 |
| Output current (A) |
20 |
| Power (KW) |
3 |
| Weight (kg) |
5 (with package) |
| Cooling type |
Fan cooling |
| Radiator T-rise |
≤ 30℃ |
| Input voltage (VAC) |
Min |
323 |
| Typical |
380 |
| Max |
437 |
| Output voltage (VDC) |
Min |
88 |
| Typical |
121 |
| Max |
150 |
| Voltage regulation |
±0.5% |
| Current regulation |
±1% |
| Efficiency |
≥ 92% |
| Storage temperature (℃) |
Min |
-40 |
| Typical |
25 |
| Max |
60 |
| Working temperature (℃) |
Min |
-10 |
| Typical |
25 |
| Max |
40 |
| Current share imbalance |
±3% |
| Soft start time (S) |
3 ~ 8 |
| Ripple |
≤ 0.5% |
| Over voltage protection |
160 ± 8VDC |
| Automatic current limit |
Maximum output current is limited to 110% of the rated output current. Constant current output during overload. |
| Load grade |
Continuous working with Grade I (100%) rating output current |
| Short circuit protection |
Self-recoverable; module protects itself when short-circuited. |
| Note: the influence of built-in diode is neglected when mentioning voltage regulation. |
Frequently Asked Questions
Q1: What is the efficiency of the power supply module?
A1: The module features high efficiency, typically reaching over 93%, thanks to the resonant voltage type soft switching technology.
Q2: Can the module be replaced while the system is running?
A2: Yes, the module is designed to be hot-swappable, allowing for easy maintenance and expansion without shutting down the system.
Q3: How does the current sharing work in a multi-module system?
A3: It uses isolation automatic current sharing technology, ensuring that current imbalance between modules remains under ±3%.
Q4: Does the module have built-in protection against short circuits?
A4: Yes, the module includes self-recoverable short circuit protection, which prevents damage to the hardware and restores operation once the fault is cleared.
Q5: What communication interface does the module support?
A5: It comes with a standard RS-485 interface, making it compatible with various automation systems for remote monitoring and control.
Q6: What is the input voltage range for this specific model?
A6: The typical input voltage is 380VAC, with an operating range between 323VAC and 437VAC.
Bangzhao Electric
