3C10-20KS10–20 kVA / 9–18 kW
Castle 3C Series Three-Phase Online UPS (10–20 kVA)
Three-phase input, single-phase output online UPS for SMB data centers and branch offices — up to 3 units in parallel for N+1 redundancy.
Power Rating
10–20 kVA / 9–18 kW
Topology
Online double conversion
Efficiency
up to 93.5% (line) / 98% (ECO)
Input
208–476 VAC (3ph) / 120–275 VAC (1ph)
Output
220/230/240 VAC
Parallel
up to 3 units
Backup
external battery, configurable
Full Specifications
Overview
Series
3C 10KS / 3C 15KS / 3C 20KS
Power Rating
10 / 15 / 20 kVA at 0.9 PF (9 / 13.5 / 18 kW)
Topology
Online double conversion (VFI)
Input Wiring
Three phase or single phase with ground (3:1 or 1:1)
Output Waveform
Pure sine wave
Certifications
IEC61000, IEC62040, CE
Input
Voltage Range
208–476 VAC (three phase); 120–275 VAC (single phase)
Frequency Range
40–70 Hz
Input Power Factor
≥ 0.99
Output
Nominal Voltage
220/230/240 VAC
Voltage Regulation
±1%
Frequency (Battery Mode)
50/60 ±0.2 Hz
Voltage Distortion (THDv)
< 2% linear / < 4% non-linear
Crest Factor
3:1
Overload Capability
10 min @ 105–125%; 30 s @ 125–150%; 500 ms @ > 150%
Efficiency (Line Mode)
> 93.5%
Efficiency (ECO Mode)
> 98%
Parallel
Parallel Function
Up to 3 units (N+1 redundancy supported)
Battery
Battery Voltage
192 VDC; 216/240 VDC optional
Battery Quantity
16 pcs external (default); 16/18/20 pcs adjustable
Backup Time
Depends on customer battery configuration
Charging Current
4 A
Physical
Dimensions (W×H×D)
212×500×420 mm (10KS); 248×500×565 mm (15KS/20KS)
Net Weight
16.9 kg (10KS); 31 kg (15KS/20KS)
Display
LCD + LED with fault code
Interface
RS232 standard, USB optional; dry contact / MODBUS / NMC cards optional
Software
Winpower monitoring
Environment
Operating Temperature
0–40 °C
Humidity
0–95% non-condensing
Audible Noise
< 50 dB @ 1 m
Specifications are subject to change without notice due to continuous product improvement. Confirm final parameters with our sales team for your order.