Technical performance
This product is suitable for powering small SPC exchanges, access networks, transmission equipment, mobile communications, ground stations of satellite communications, and microwave communications. It can also be used to power other types of communication equipment.

Standard configuration
(1) 8 4850 rectifier modules;
(2) 1 monitoring module;
(3) AC input for power distribution part: 125A/4P*2 mechanical interlock
DC output: user 1, 125A*2, (load); 63A*1 channel, 32A*3 channels (secondary)
User 2, 125A*2, (load);63A*1 channel, 32A*3 channels (secondary)
User 3, 125A*2, (load);63A*1 channel, 32A*3 channels (secondary)
User 4, 63A*1, (load);32A*2 channels (secondary)
Number of battery channels: 125A*4

Basic working principles
Under normal system power conditions, various parameters of the rectifier module and the power distribution unit are controlled by the monitoring module, which operates according to its preset parameters or user commands. In the event of a utility power failure, the system switches to battery power. As the battery discharges, its terminal voltage begins to drop. When the battery voltage falls below the 46V upper computer (settable) low-voltage alarm point for the battery, the monitoring module reports an alarm signal and directly shuts down the load output, causing the entire system to cease operation. When the external utility power is restored, the system returns to its normal operating state (the above monitoring data represents the system’s default values, which can be reconfigured by the user). If the working environment temperature of the power system ≥55°C, the power system will need to operate at reduced power output.

Performance indexes
(1) AC input
    Rated input voltage: 385VAC;
    Input voltage scope: double three-phase AC input (125A/4P*2);
    Single-phase max input current: 40A;
    Frequency: 50Hz: 47~63Hz;
    Input power factor: ≥ 0.98.
(2) Battery input
    The positive and negative terminals of the battery pack are connected in parallel with the DC output of the rectifier module (with consistent polarity) and operate in either float charge or equalization charge mode.
(3) DC output
    Standard voltage: 54VDC;
    Voltage adjustable scope: 42V~58V;
    DC output current: 400A(176~290VAC);
    User 1, 125A*2, (load); 63A*1 channel, 32A*3 channels (secondary)
    User 2, 125A*2, (load); 63A*1 channel, 32A*3 channels (secondary)
    User 3, 125A*2, (load); 63A*1 channel, 32A*3 channels (secondary)
    User 4, 63A*1, (load); 32A*2 channels (secondary)
    Number of battery channels: 125A*4
(4) DC output noise
    Telephone balance weight noise: ≤ 2mV;
    Wideband noise voltage: ≤ 100mV(3.4KHz~150KHz);
            30mV(150KHz~30MHz);
    Peak noise voltage: ≤ 200mV(within 20MHz).
(5) Voltage stabilization accuracy of power supply system: ≤±1%;
    Load adjustment rate of power supply system: ≤±1%;
    Source adjustment rate of power supply system: ≤±1%.
(6) Work efficiency: ≥ 92% (220Vac input);
    ≥ 87%(110Vac input).
(7) Other features:
    Dynamic response overshoot amplitude: ≤±5%;
    Dynamic response recovery time: ≥ 10ms;
    Dynamic unbalance degree: ≤±5%.
(8) Insulation resistance:
    Insulation resistance ≥ 10MΩ (test voltage 500Vdc) between DC, AC and enclosure;
    Leak current＜3.5mA.
(9) Insulation strength:
    An AC voltage of 3000Vac at 50Hz is applied between the AC input and DC output parts, with a leakage current of ≤ 10mA, and no breakdown or arcing for one minute; an AC voltage of 2500Vac at 50Hz is applied between the AC part and the enclosure, with a leakage current of ≤ 10mA, and no breakdown or arcing for one minute; an AC voltage of 1000Vac at 50Hz is applied between the DC output and the enclosure, with a leakage current of ≤ 10mA, and no breakdown or arcing for one minute.

Cabinet dimensions
Single-bin cabinet (width×length×height) 900*900*2100;
Double-bin cabinet (width×length×height) 1750*900*2100.