NPM20
Intelligent High-frequency
DC Power Supply System
A brand new power supply system integrating digital control, protection and management to provide stable operating power for DC circuits.
NPM20 series intelligent high-frequency DC power supply system is mainly used in power grid, power generation and other fields. As a DC uninterrupted power supply for all automatic electric power systems, communication systems, remote execution systems, switch opening and closing, relay protection, automatic devices and signaling devices of high-voltage circuit breaker.
large-size color touch screen makes human-machine operation more convenient.
The system is equipped with RS485/RS232 communication interface and adheres to Modbus-RTU protocol, which can be accessed to the back-end system to realize intelligent monitoring.
High-frequency DC power supply module adopts N+1 redundant design and high-frequency resonant soft-switching technology, reducing the loss and extending the service life.
Uses the battery of well-known brand, and the service life is up to 100,000 hours (1500 times).
he rectifier module utilizes advanced soft-switching conversion technology and built-in CPU technology, with low voltage distortion, high efficiency, high accuracy of voltage and current stabilization and low ripple coefficient.
The charging module can be hot-swapped, which greatly reduces the average maintenance time, so that the device is able to monitor the insulation of the system in real time to ensure system and personal safety.
| Category | Name | Indicator | |
| 220V Series | 110V Series | ||
| Input parameters | Input voltage | AC80-285V or AC380V±20% | |
| Frequency | 50Hz±10% | ||
| Power factor | ≧0.92 | ≧0.92 | |
| Output parameter | Float voltage | 176~260Vdc | 88~130Vdc |
| Equalizing charge | 220~286Vdc | 110~143Vdc | |
| Ripple coefficient | ≤±0.5%(typical value 0.1%) | ≤±0.5%(typical value 0.1%) | |
| Voltage stabilization accuracy | ≤±0.5%(typical value 0.1%) | ≤±0.5%(typical value 0.1%) | |
| Current stabilization accuracy | ≤±0.5%(typical value 0.1%) | ≤±0.5%(typical value 0.1%) | |
| Equalizing unbalance | ≤±3%（50%-100% rated load) | ≤±3%（50%-100% rated load) | |
| Efficiency | 95% (single module) | 95% (single module) | |
| Protection parameters | Input overvoltage switching point | 456±5Vac | 456±5Vac |
| Input undervoltage switching point | 304±5Vac | 304±5Vac | |
| Charging module output undervoltage alarm | 196V | 99V | |
| Insulation characteristics | Output-to-ground insulation | 2kVac, current leakage ≤30mA， 1min, no arcing |
2kVac, current leakage ≤30mA， 1min, no arcing |
| Input-to-ground insulation | |||
| Input to output ground insulation | |||
| Insulation resistance | ≥10MΩ | ≥10MΩ | |
| Application environment | Operating temperature | -10℃~+45℃ | |
| Storage temperature | -40℃~+60℃ (without battery) | ||
| Humidity | Daily average ≤95%, Monthly average ≤90% | ||
| Other characteristics | Noise | Self-cooling ≤40db | |
| Protection degree | ≥IP30 | ||
| Heat dissipation mode | Air-cooling/Self-cooling | ||
| Battery capacity | 20AH~2000AH | ||
| Battery life | 100,000 hours | ||
| NPM20 | 100AH | 2 | G | D2 | Optional functions |
| Product code | Capacity specification | Number of cabinet panels | Installation method | Output voltage | Function code |
| NPM20： Intelligent High-frequency DC Power Supply System |
20AH 24AH 40AH 65AH 100AH |
1: one panel 2: two panels 3: three panels |
No code: None：Floor-standing G：Wall-mounted |
D2: DC220V D1: DC110V D4: DC48V |
K: Switching detection module C: Battery inspection module F:Branch circuit insulation detection module N:Inverter module |
NPM20 Intelligent High-frequency DC Power Supply System
Input parameters：
Input voltage：AC80-285V or AC380V±20%；Frequency：50Hz±10%；Power factor： ≧0.92；
Output parameter：
Float voltage：176~260Vdc；Equalizing charge：220~286Vdc；Ripple coefficient：≤±0.5%(typical value 0.1%)；Voltage stabilization accuracy ：≤±0.5%(typical value 0.1%)；Current stabilization accuracy ：≤±0.5%(typical value 0.1%)；Equalizing unbalance： ≤±3%（50%-100% rated load)；Efficiency：95% (single module)；
Protection parameters：
Input overvoltage switching point：456±5Vac；Input undervoltage switching point：304±5Vac；Charging module output undervoltage alarm：196V；
Insulation characteristics：
Output-to-ground insulation/Input-to-ground insulation/Input to output ground insulation：2kVac, current leakage ≤30mA，1min, no arcing；Insulation resistance：≥10MΩ；
Application environment：
Operating temperature：-10℃~+45℃；Storage temperature：-40℃~+60℃ (without battery)；Humidity：Daily average ≤95%, Monthly average ≤90%；
Other characteristics：
Noise：Self-cooling ≤40db；Protection degree：≥IP30；Heat dissipation mode：Air-cooling/Self-cooling；Battery capacity ：20AH~2000AH；Battery life：100,000 hours；
Input parameters：
Input voltage：AC80-285V or AC380V±20%；Frequency：50Hz±10%；Power factor： ≧0.92；
Output parameter：
Float voltage：88~130Vdc；Equalizing charge：110~143Vdc；Ripple coefficient：≤±0.5%(typical value 0.1%)；Voltage stabilization accuracy ：≤±0.5%(typical value 0.1%)；Current stabilization accuracy ：≤±0.5%(typical value 0.1%)；Equalizing unbalance： ≤±3%（50%-100% rated load)；Efficiency：95% (single module)；
Protection parameters：
Input overvoltage switching point：456±5Vac；Input undervoltage switching point：304±5Vac；Charging module output undervoltage alarm：99V；
Insulation characteristics：
Output-to-ground insulation/Input-to-ground insulation/Input to output ground insulation：2kVac, current leakage ≤30mA，1min, no arcing；Insulation resistance：≥10MΩ；
Application environment：
Operating temperature：-10℃~+45℃；Storage temperature：-40℃~+60℃ (without battery)；Humidity：Daily average ≤95%, Monthly average ≤90%；
Other characteristics：
Noise：Self-cooling ≤40db；Protection degree：≥IP30；Heat dissipation mode：Air-cooling/Self-cooling；Battery capacity ：20AH~2000AH；Battery life：100,000 hours；
Product code：NPM20：Intelligent High-frequency DC Power Supply System
Capacity specification：20AH、24AH、40AH、65AH、100AH
Number of cabinet panels：1: one panel 、 2: two panels 、 3: three panels
Installation method：None：Floor-standing、G：Wall-mounted
Output voltage：D2: DC220V、D1: DC110V、D4: DC48V
Function code：K: Switching detection module C: Battery inspection module 、F:Branch circuit insulation detection module、N:Inverter module