YSDU20 Series
Uninterruptible DC-UPS controller
Parallel connection to DC BUS
Suitable for 24V systems, up to 20A
2A Battery charging current
Allows 4AH~135AH lead-acid various battery capacities
LED indicator for signal status
Complete diagnostic and monitoring for DC BUS OK ,battery discharge, battery fail
| Model No. | YSDU20-24 |
| DC VOLTAGE RANGE | 21-29 Vdc |
| DISCHARGE CURRENT RANGE | 0~20A |
| CHARGING CURRENT | 2A |
| NORMAL INPUT VOLTAGE | 24Vdc |
| INPUT VOLTAGE RANGE | 24~29Vdc |
| RATED CURRENT | 20A |
| NORMAL BATTERY VOLTAGE | 24Vdc ( 2 x 12Vdc in series or 1 x 24Vdc) |
| BATTERY TYPE | Lead-acid battery |
| EXTERNAL BATTERY CAPACITIES | 4AH ~ 135AH |
| RELAY CONTACT RATINGS (max.) | 30VDC/1A resistive load |
| DC BUS OK | Relay contact : Short when DC voltage between 21~29V(±2%), relay contacts |
| LED(Green) : DC BUS OK : light ; DC BUS fail : dark | |
| BATTERY FAIL | Short when battery voltage falls below 22V(±2%) or battery failure is observed through the battery test function, relay contacts |
| LED(Red) : Battery over-discharge warning or battery broken : light ; Battery OK : dark | |
| BATTERY DISCHARGE | Relay contact : Short when battery in discharge condition, relay contacts |
| LED(Yellow) : light : Battery discharging ; dark : Battery is not discharging or discharging current < 1.0A | |
| Working Temperature | -30 ~ +70℃ (Refer to “Derating Curve”) |
| Withstand Voltage | IP/OP – Chassis : 0.5KVac ; IP/OP- Relay : 0.5KVac ; Relay – Chassis : 0.5KVac |
| Protection | Short circuit/Battery reverse polarity/Over discharge current /Battery deep discharge |
| Connection | I/P :4 poles terminal Block O/P: 6 poles terminal Block |
