Equipment overview:
This equipment is used for motor no-load noise test

Technical indicators:

Operating time: 40S at 4000rpm; 8000rpm, 40S
Noise standard: ambient noise ≤ 55db, subject to the actual situation. The noise tester is placed at a distance of 1M from the motor
Generator: ≤ 65db at 2000rpm, ≤ 70db at 4000rpm, ≤ 75db at 6000rpm, ≤ 75db at 8000rpm, ≤ 80db at 10000rpm, ≤ 80db at 13000rpm
Drive motor: ≤ 65db at 2000rpm, ≤ 70db at 4000rpm, ≤ 75db at 6000rpm, ≤ 75db at 8000rpm, ≤ 80db at 10000rpm, ≤ 80db at 13000rpm, ≤ 85db at 15000rpm
Spectrum standard: 4000rpm Time: 8th order, 533Hz,<- 52db； 24 order, 1600Hz,<- 55db; 48-order, 3200Hz,<- 40db; At 8000rpm: 1st order, 133Hz,<- 45db； 6,4 order, 861Hz,<- 50db；

Reactive aging: 3000 rpm, 100A current, 3min

Technical indicators:

1. Coaxiality of shafting (farthest end) ≤ 0.02mm
2. The minimum speed is 16000rpm
3. Torque sensor requirements: 0.5 level; cgk≥1.67
4. Noise value: maximum ambient noise rise after equipment operation ≤ 5db
5. Damping: the vibration of the test bench will not be transmitted to the line body, and there is no vibration sense when the equipment operates outside the silent room
6. The tested motor is automatically installed with oil, and the removed oil pipe does not drip water onto the machine table (LS32). The maximum flow rate of the single channel of the oil cooler is not less than 8L/min (adjustable flow rate), and the pressure is less than 0.2Mpa
7. Vibration 2 measuring point: rotary transformer rear end cover and radial
8. Detection of oil leakage in the oil passage. Oil leakage is prohibited. After the test, the oil passage shall be cleaned and the oil dripping procedure shall not affect the normal maintenance of the product and production line
9. The power line and signal line should be routed separately, with a distance of more than 10cm. The power line and signal line of the driver and motor should have a shielding layer and be effectively grounded
10. The electric control input power is DC DC power, and the motor input power is UVW three-phase AC power
11. The maximum torque of the tested product is 350Nm
12. Vibration test requirements: the software can identify the 0-16000 rotation speed, collect the vibration of the motor loaded at this rotation speed, and analyze the vibration data of 1-96 steps
13. The test power supply of the product is directly from the DC power supply cabinet. When the equipment is connected with the power supply cabinet, the power supply cabinet does not output, and the power supply cabinet is powered on after the connectors are connected
14. The maximum current of power cable is 450A, and each continuous operation time is not less than 30s

NVH test

Vibration and stress test:
Vibration test (acceleration and intensity) of parts and structures, vibration sensitivity evaluation (transfer function), vibration test of rotating machinery (torsional vibration, order tracking), stress and strain test, road spectrum acquisition, etc.
Modal test: modal test of components and structures based on hammering method; Working deformation analysis, etc.
Sound field test: sound pressure test, sound power test (sound pressure method and sound intensity method), sound intensity test (discrete point method and scanning method) of parts and structures based on anechoic chamber/external environment
Abnormal sound test: abnormal sound test of parts and structures based on semi-anechoic chamber and silent vibration table, objective/subjective evaluation of sound quality (loudness, clarity, sharpness, etc.)
Level 1 (dynamic balance) Level 2 (axis track) Level 3 (collision and friction)
4th order (high frequency vibration)

Torque sensor requirements: 0.5 level cgk≥1.67

Leak Test

Order Number	Item	ParaMeter	Remarks
1	size	1.8m × 1.4m × 3.2m (refer to the actual size)
2	Meter	≤ 100s/piece
3	energy consumption		See energy consumption table for details
4	function	Detection accuracy ≤± 1Pa
5	system	The equipment contains a life management system for vulnerable parts, which can set the remaining percentage alarm of the life cycle of vulnerable parts according to the use of the equipment