NHE-2.5KVA×2 Emergency Power Supply
With sophisticated microelectricity, automatically-controlled technology; we have developed NHE-2.5KVAX2 Emergency power supply (EPS). It is specially designed for various electrical equipments to supply power in case of failure of electric network or equipment.
This product consists of mutual-input unit, high frequency intelligent charger, power unit, electrical control cabinet and battery。When the electric network runs normally, it supplies the power to loads by mutual-input unit. When the electric network has a power failure, the mutual-input unit will switch to power automatically. When the urban electricity is normal again, the inverter circuit closes and other circuits automatically turn back to urban controlling condition.
It is convenient and efficient, widely used in many fields.
Specifications
| Description |
Parameter |
| Input voltage |
220VAC±10% (single phase) |
| Input frequency |
45Hz~65Hz |
| Output frequency |
50Hz±0.05 |
| Output voltage |
In case of emergency : 220VAC ±5% |
| - |
In normal operation : same as electric network |
| Rated output wattage |
Single phase : Circuit A : 2.5KVA Circuit B : 2.5KVA 2.5KVA * 2 |
| Emergency time |
90 minutes |
| Overload capability |
120 % normal operation; 150% 4s |
| Wave |
In case of emergency : quasi-sinusoidal wave. |
| - |
In normal operation : same as electric network |
| Efficiency |
In normal operation : 100% |
| - |
In case of power failure : 85% ~ 95% |
| Conversion time for mutual-input unit |
Static ≤ 300 ms |
| Protection function |
Overload, short circuit, overheating, overcharging and overdischarging protection |
| Applicable environmen |
Ambient temperature : -10 ℃ ~ +50 ℃ |
| - |
Relative humidity : 10% ~ 90% (no coagulation) |
| Noise |
In case of emergency : ≤40dB |
| - |
In normal operation : no noise |
| Applicable load |
Mixed load which has no strong impact and has fixed frequency resistance, inductance and capacitance etc. |
| DC voltage |
DC24V * 2 |
| DC current |
≥90A |
| Battery |
Four maintenance-free lead battery (12V/200AH) |
Functions & Features
- Adopt DSP control, high frequency IGBT inverter, sine pulse modulation inverter SPWM technology.
- Use high frequency, large capacity and intelligent charger and battery.
- Modulation design, convenient to maintenance.
- Static conversion，without noise, pollution and harm.
- Convert power supply automatically with being unattended.
- Energy-saving, low power consumption in case of non emergency supply.
- Reliable performance and external long life.
Protection function
| Protection function |
Description |
Remarks |
| Overload protection |
When if the power of load exceeds up to 150%, output will be off after 4s. |
Firstly shut down and then restart |
| Shortcircuit protection |
When if there is a shortcircuit, the EPS will shutdown automatically. |
| Reversed polarity protection |
When if the polarity of DC power is reversed, the EPS will protect itself automatically. |
Restart the switch of inverter A and inverter B |
| Undervoltage protection |
When if the input of DC power is lower than 21V, the EPS will shut down automatically. |
| Overvoltage protection |
When if the input of DC power is higher than 34V, the EPS will shut down automatically. |
| Overheat protection |
When if the temperature inside the EPS exceeds 75℃, its output will shut down automatically. |
