WIT 29.9-50K-XHU Series

Product Overview

The WIT 29.9-50K-XHU series covers 29.9 kW, 30 kW, 36 kW, 40 kW and 50 kW three-phase hybrid models. Each model uses four MPPT inputs with two strings per MPPT, a 180-1000 V operating range, 620 V rated input voltage and 40 A maximum current per MPPT. When the battery voltage is above 800 V, the PV open-circuit voltage should stay below 850 V.

The three battery ports accept lithium and lead-acid batteries from 200 V to 900 V at a rated 512 V, with 55 A charge and discharge current per port over RS485/CAN. Generator input supports smart start and stop; diesel generator capacity should be sized at load divided by 0.7. UPS function with black start, a transfer time of 10 ms or less, 100% three-phase unbalanced output and 150% overload for 10 s cover backup and off-grid operation. Maximum efficiency is 98.10% with 97.20% Euro efficiency.

Key Features

• Four MPPT inputs with 40 A maximum current per MPPT
• Three battery ports, independent or parallel connection
• Generator input with smart start and stop
• UPS function and black start capability
• Parallel operation of up to 3 units in off-grid mode with smart load control
• 100% three-phase unbalanced output
• 150% off-grid overload capability for 10 s
• On/off-grid transfer time of 10 ms or less
• Suitable for weak grids with SCR below 1.2
• 200-900 V battery range with 55 A per port
• OLED and LED display with APP monitoring
• IP66 protection for outdoor wall-mounted installation
• 5-year standard warranty

Technical Specifications

DC Input (PV)

Parameter	WIT 29.9K-XHU	WIT 30K-XHU	WIT 36K-XHU	WIT 40K-XHU	WIT 50K-XHU
Maximum input power	59.8 kW	60 kW	72 kW	80 kW	100 kW
Maximum input voltage	1100 V
Start-up voltage	195 V
Rated input voltage	620 V
MPPT operating voltage range	180-1000 V
Number of MPPTs	4
Strings per MPPT	2
Maximum input current per MPPT	40 A
Maximum short-circuit current per MPPT	50 A

Battery (BAT)

Battery type	Lithium battery / lead-acid battery
Rated battery voltage	512 V
Battery voltage range	200-900 V
Number of battery ports	3
Maximum charge / discharge current	55 A × 3
Battery communication	RS485 / CAN

AC Input (Grid)

Parameter	WIT 29.9K-XHU	WIT 30K-XHU	WIT 36K-XHU	WIT 40K-XHU	WIT 50K-XHU
Rated input power	59.8 kW	60 kW	72 kW	80 kW	100 kW
Maximum input power	59.8 kW	66 kW	79.2 kW	88 kW	110 kW
Rated input voltage / range	380 / 400 V, -15% to +10%
AC wiring type	3P3W+PE / 3P4W+PE
Rated input frequency / range	50 Hz / 45-55 Hz, 60 Hz / 55-65 Hz
Maximum input current	90.6 A @220 V	100 A @220 V	120 A @220 V	133.3 A @220 V	166.7 A @220 V

AC Input (Generator)

Parameter	WIT 29.9K-XHU	WIT 30K-XHU	WIT 36K-XHU	WIT 40K-XHU	WIT 50K-XHU
Rated input power	59.8 kW	60 kW	72 kW	80 kW	100 kW
Maximum input current (GEN / AC coupling)	90.6 A @220 V	100 A @220 V	120 A @220 V	133.3 A @220 V	166.7 A @220 V
Rated input voltage	380 / 400 V
Wiring type	3P3W+PE / 3P4W+PE
Rated input frequency	50 Hz / 60 Hz

AC Output (Grid)

Parameter	WIT 29.9K-XHU	WIT 30K-XHU	WIT 36K-XHU	WIT 40K-XHU	WIT 50K-XHU
Rated output power	29.9 kW	30 kW	36 kW	40 kW	50 kW
Maximum output apparent power	29.9 kVA	33 kVA	39.6 kVA	44 kVA	55 kVA
Maximum output current	45.3 A @220 V	50 A @220 V	60 A @220 V	66.7 A @220 V	83.3 A @220 V
Rated output voltage / range	380 / 400 V, -15% to +10%
AC wiring type	3P3W+PE / 3P4W+PE
Rated grid frequency / range	50 Hz / 45-55 Hz, 60 Hz / 55-65 Hz
Power factor adjustment range	-1 to +1
THDi	<3%

AC Output (Back-up Load)

Parameter	WIT 29.9K-XHU	WIT 30K-XHU	WIT 36K-XHU	WIT 40K-XHU	WIT 50K-XHU
Rated output power	29.9 kW	30 kW	36 kW	40 kW	50 kW
Maximum output apparent power	29.9 kVA	45 kVA	54 kVA	60 kVA	75 kVA
Maximum output current	68.0 A	68.2 A	81.8 A	90.9 A	113.6 A
Rated output voltage	220 / 230 V (L-N), 380 / 400 V (L-L)
Rated output frequency	50 Hz / 60 Hz
THDv	<3% (linear full load)
Load unbalance	100% three-phase unbalance
Overload capability	150% for 10 s
On/off-grid transfer time	≤10 ms

Efficiency

Maximum efficiency	98.10%
Euro efficiency	97.20%

Protection

DC input reverse-polarity protection	Available
DC input switch	Available
AC short-circuit protection	Available
AC overcurrent protection	Available
DC / AC surge protection	Class II / Class II
Insulation resistance monitoring	Available
Ground fault monitoring	Available
Residual current monitoring	Available
Anti-islanding protection	Available
String monitoring	Available
Anti-PID function	Optional
DC arc fault detection	Optional

General Data

Dimensions (W × H × D)	920 × 585 × 320 mm
Weight	92 kg
Operating temperature range	-30 °C to +60 °C (derated above 50 °C)
Relative humidity	0-95%
Maximum operating altitude	4000 m
Protection rating	IP66
Topology	Transformerless
Cooling	Air cooling
Display	OLED + LED / APP
Communication	RS485 / CAN / USB available; WiFi / LAN available
Installation	Wall-mounted
Warranty	5 years
Certification	IEC/EN 61000-6-1, IEC/EN 61000-6-3, IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 62477-1, NRS 097-2-1:2017, EN 50549-1, NC RFG, PSE-2018, TPIREE-2021, IEC 62116, IEC 61727, G99:2020, VDE 4105

Applications

The series is intended for commercial and industrial PV systems that combine battery storage, backup loads and generator support, including weak-grid sites.

• Commercial and industrial rooftop PV with storage
• Backup power for critical loads
• Off-grid and weak-grid micro-grid systems
• Generator-hybrid sites with smart start and stop
• Sites needing three independent battery channels

OEM & Custom Requirements

Project supply and private-label requirements can be confirmed against the standard WIT 29.9-50K-XHU platform. Share the required power class, battery configuration, generator plan and destination market.

• Private-label enclosure and documentation
• Power class selection from 29.9 kW to 50 kW
• Battery and generator interface configuration
• Manual localisation for the target market
• Packaging and delivery planning