Diesel Generator Set Test Report
Unit model	LT-50GF	Diesel engine model			ZH4105ZD			Diesel engine brand		Watkins	Motor model	TZH2-50	Motor brand	Shanghai Duning
manufacturer					Weifang Leiting Power Machinery Co., Ltd.
Rated power kWRated power kW	50	Rated voltage V			400/380			Rated current A		90	Protection rating	IP21
Relative humidity %	60							Ambient temperature °C		20	Rated speed kpa	50
※Inspection of diesel engine appearance, markings, and packaging					√				※Insulation dielectric strength test		√	Instrument panel indicator condition detection
※Diesel engine performance testing					√				※Room temperature start-up performance test		√	※Control panel indicator devices	√	※Overspeed protection detection	√
insulation testing	Each independent electrical circuit of the diesel engine has a resistance to ground of ≥2 MO.				√				※Phase sequence detection: Forward phase sequence		√	※High water temperature protection detection	√	※Emergency brake detection	√
insulation testing	Insulation resistance between circuits ≥ 2 MO				√				※Overload protection and short circuit protection monitoring		√	※Low oil pressure protection detection	√	※Battery test	√
		Electrical performance testing of the unit
Load rating Power 50%	Power kW	电压 V			Current A			Power factor	Frequency HZ	Steady-state voltage Deviation o u%	Frequency drop o fst%	Frequency fluctuation HZ		Steady-state frequency βf%	Voltage adjustment range V
Load rating Power 50%	Power kW	UA	UB	UC	1A	2A	3A	Power factor	Frequency HZ	Steady-state voltage Deviation o u%	Frequency drop o fst%	maximum value	minimum value	Steady-state frequency βf%	Voltage adjustment range V
0%	0	398	397	400	0	0	0	0.8	50	± 1.59	3.2	52.1	50	1.1	400/ 380
25%	25	395	396	393	20	23	26		52		2.9	52.2	50.5	1.4
50%	50	398	399	390	43	45	46		50.2		1.9	51.1	50.1	1.7
75%	75	390	395	397	68	70	72		50.4		1.1	52.4	50	1.5
100%	50	398	399	391	88	90	92		50.2		0	50	50.4	1.6
75%	75	394	395	397	71	69	66		50.1		1.3	52.3	51.2	1.3
50%	50	398	399	390	42	45	35		50.2		2	52.4	50	1.2
25%	25	395	396	393	23	22	20		50.2		2.8	51.2	50.5	1.7
0%	0	398	397	390	0	0	0		51.5		3.1	51.2	50.6	1.4
test results	Steady-state voltage deviation o U%				± 1.62						Frequency drop ofst%		4
test results	Voltage adjustment range ≥ ± 5% un				qualified						Frequency drop ofst%		4
Testing conclusions	Approved for shipment					inspector		6			review	Through