Voltage stabilized charging power supply for low-voltage branch monitoring terminal

The SCPS-FCI-30-25 low-voltage branch monitoring terminal uses a regulated charging power supply based onGeneral Technical Specification Requirements for State Grid Corporation of ChinaR&Dproduction, withIndependent supercapacitor sealing modulereservepower supplyAdopting PWM technology and a stable and reliable circuit topology, it has the characteristics of light weight, high efficiency, wide operating temperature range, strong resistance, strong grid adaptability, fast dynamic response, high stability, low noise ripple, and strong protection function.This productalso applies toOther items that require backup power supplydistribution equipment.

Rated parameter requirements

1. Input requirements for power supply

a) Rated AC input voltage: AC220V;

b) Input voltage fluctuation range: -20%~+90%；

c) The waveform of the AC power supply is a sine wave;

d) The nominal frequency of the AC power supply is 50Hz, and the frequency variation range does not exceed ±2%；

2 Power output technical parameters

a) Rated output voltage:DC25.2V；

b) Rated output current:DC1.2A；

c) Voltage stabilization accuracy: ≤±1%；

d) Ripple factor: ≤1%；

e) Voltage regulation rate: ≤±0.5%；

f) Load adjustment rate: ≤±1%；

g) Working efficiency under rated operating conditions: ≥70%.

3 backup power sources

a) The backup power supply adopts supercapacitors;

b) When there is electricity in the communication input, the power output not only supplies power to the system, but also charges the backup energy storage capacitor;

c) The backup power supply can automatically and seamlessly switch on when the main power supply is insufficient or disappears, ensuring stable output voltage;

d)Supercapacitors for large energy storage: ≥3000J；

e)Charging power: ≤12W；

f)Supercapacitors charge from zero voltage to full voltage: ≤5minute;

g)The backup power supply ensures stable operation time at rated output power: ≥1minute;

h)Supercapacitors are independent sealed modules with independent installation space, with a lifespan of ≥8Year;