WIT 4-25K-HU

Name: WIT 4-25K-HU
SKU: WIT 4-25K-HU

Hybrid inverter · Three-phase · 4 – 25 kW

4 – 25 kWThree-phaseIP66

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4 – 25 kWRated power

Three-phasePhase

1 – 2MPPT trackers

97.6 %Max. efficiency

Technical data

PV input
	WIT 4K-HU	WIT 5K-HU	WIT 6K-HU	WIT 8K-HU	WIT 10K-HU	WIT 12K-HU	WIT 15K-HU	WIT 17K-HU	WIT 18K-HU	WIT 20K-HU	WIT 22K-HU	WIT 25K-HU
Max. PV input power (W)	6400	8000	9600	12800	16000	19200	24000	34000	36000	40000	44000	50000
Max. PV input voltage (V)	1000
Rated PV input voltage (V)	600	600	600	600	600	600	600	625	625	625	625	625
MPPT voltage range (V)	150 – 850
Start-up voltage (V)	180
Max. input current per MPPT (A)	40	40	40	20	20	40	40	40	40	40	40	40
Max. short-circuit current per MPPT (A)	50	50	50	25	25	50	50	50	50	50	50	50
Number of MPPT trackers	1	1	1	2	2	2	2	2	2	2	2	2
PV strings per MPPT	2	2	2	1	1	2	2	2	2	2	2	2
Max. string current (A)	20
AC output
Rated output power (W)	4000	5000	6000	8000	10000	12000	15000	17000	18000	20000	22000	25000
Max. apparent power (VA)	4400	5500	6600	8800	11000	13200	16500	18700	19800	22000	24200	27500
Rated AC voltage (V)	400
Phase	Three-phase
Rated AC frequency (Hz)	50/60
Max. AC output current (A)	6.7	8.4	10	13.3	16.7	20	25	28.33	30	33.33	36.66	41.67
Total harmonic distortion (THDi) (%)	<3
Power factor	-1 to +1 (adjustable)
Backup output power (W)	4000	5000	6000	8000	10000	12000	15000	17000	18000	20000	22000	25000
Peak (surge) power (W)	8000	10000	12000	16000	20000	24000	30000	34000	36000	40000	44000	50000
Generator input	Yes
Max. parallel units	10
AC input nominal power (grid) (W)	8000	10000	12000	16000	20000	24000	30000	34000	36000	40000	44000	50000
Max. AC input apparent power (grid) (VA)	8800	11000	13200	17600	22000	26400	33000	37400	39600	44000	48400	55000
Max. AC input current (grid) (A)	13.4	16.7	20.0	26.6	33.3	40.0	50.1	56.67	60	66.67	73.33	83.33
AC grid connection type	3P3W+PE/3P4W+PE	3P3W+PE/3P4W+PE	3P3W+PE/3P4W+PE	3P3W+PE/3P4W+PE	3P3W+PE/3P4W+PE	3P3W+PE/3P4W+PE	3P3W+PE/3P4W+PE	3P+PE/3P+N+PE	3P+PE/3P+N+PE	3P+PE/3P+N+PE	3P+PE/3P+N+PE	3P+PE/3P+N+PE
Backup rated AC output voltage (V)	220/380, 230/400	220/380, 230/400	220/380, 230/400	220/380, 230/400	220/380, 230/400	220/380, 230/400	220/380, 230/400	220/380, 230/400, 240/415	220/380, 230/400, 240/415	220/380, 230/400, 240/415	220/380, 230/400, 240/415	220/380, 230/400, 240/415
Backup nominal AC output frequency (Hz)	50/60
Backup max. output current (A)	12.2	15.2	18.2	24.2	30.3	36.4	45.5	51.52	54.55	60.61	66.67	75.76
Backup THDv (linear load) (%)	3
Backup load unbalance	100% three-phase unbalanced
On/off-grid transfer time	10 ms	10 ms	10 ms	10 ms	10 ms	10 ms	10 ms	<10 ms	<10 ms	<10 ms	<10 ms	<10 ms
Battery
Battery type	Lead-acid or lithium-ion
Battery voltage range (V)	40 – 60
Max. charge current (A)	110	125	150	200	220	250	290	420	420	420	420	420
Max. discharge current (A)	110	125	150	200	220	250	290	420	420	420	420	420
Battery rated voltage (V)	51.2
BMS communication	RS485 / CAN
Efficiency
Max. efficiency (%)	97.6
European efficiency (%)	97
MPPT efficiency (%)	99.9
Protection
Protection functions	PV reverse polarity protection; DC switch; DC/AC surge protection (Type II / Type III); Insulation resistance monitoring; Residual-current monitoring unit; AC short-circuit protection; Ground fault monitoring; Grid monitoring; Strings monitoring; Anti-islanding protection; AFCI function (optional)
General data
Dimensions (W x H x D) (mm)	475 × 698 × 240	475 × 698 × 240	475 × 698 × 240	475 × 698 × 240	475 × 698 × 240	475 × 698 × 240	475 × 698 × 240	475 × 695 × 241	475 × 695 × 241	475 × 695 × 241	475 × 695 × 241	475 × 695 × 241
Weight (kg)	43	43	43	43	43	43	43	58	58	58	58	58
Ingress protection (IP rating)	IP66
Operating temperature range (°C)	−30 – 60
Relative humidity (%)	0 – 100
Max. operating altitude (m)	3000	3000	3000	3000	3000	3000	3000	4000	4000	4000	4000	4000
Cooling	Smart air cooling
Noise level (dB)	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤55	≤55	≤55	≤55	≤55
Topology	Transformerless
Warranty (years)	10	10	10	10	10	10	10	5 – 10	5 – 10	5 – 10	5 – 10	5 – 10
Communication
Display	OLED / LED + app
Communication interfaces	RS485; USB
Monitoring	Wi-Fi / LAN data logger	Wi-Fi / LAN data logger	Wi-Fi / LAN data logger	Wi-Fi / LAN data logger	Wi-Fi / LAN data logger	Wi-Fi / LAN data logger	Wi-Fi / LAN data logger	Wi-Fi / LAN	Wi-Fi / LAN	Wi-Fi / LAN	Wi-Fi / LAN	Wi-Fi / LAN
Certifications
Certifications and standards	IEC 62109; IEC 61000
Grid codes	IEC 61727; IEC 62116; IEC 61683; IEC 60068; EN 50549; VDE 4105