HIACC Engineering And Services Private Limited

Poonamallee, Chennai, Tamil Nadu

Dongling is one of the largest and most innovative manufacturers of air cooled vibration testing systems, with random, sine force ratings from 1kN to 70kN and maximum payloads from 70 kg to as much as 1000 kg. Typical applications of Donglings air cooled electro-dynamic shakers include automotive component testing, electronics product testing, avionics testing and medical research etc

All air-cooled electro-dynamic shakers can be mounted on a single integrated base with a slip table to meet your testing requirements. Dongling also provides turn-key solutions including combined environmental chambers, head expanders and fixtures should you require them.

• Sinusoidal excitation force range: 1kN-70 kN
• Random to sinusoidal excitation force ratio 1:1
• Two-times-sine shock force(three times optional)
• Displacement Peak-to-Peak value of 25mm, 40mm, 51mm, 76mm or 100mm
• Light weight armature with optimized design and good vibration-resistant performance with excellent vibration isolation with the air spring at the trunnion position.
• High weight bearing capacity of center air spring support and good low-frequency performance
• Equipped with an automatic centering system, to ensure the armature is always in a balanced position during movement.
• Double magnetic circuit design with low flux leakage and uniform magnetic field.
• Sine, Random and shock etc.test function capabilities.
• Good cooling effect and low noise blower.

Water-cooled electro-dynamic shaker vibration test systems feature large force, large bearing capacity and high cooling efficiency. The exciting force range is from 50kN to 600kN and the load is from 800kg to 15000 kg. Water-cooled vibration test systems are used to test some of the most complex and demanding products in areas of aviation, aerospace, automotive, ship building, defence and electronics etc.

Water cooled is capable of performing a variety of vibration test protocols, including; tri-axial sinusoidal vibration test, broad-band random vibration test, as well as the classical (semi-sinusoidal, trapezoidal and post-peak saw tooth)

• Random to sinusoidal excitation force ratio:1:1.
• Displacement Peak to peak:51mm, 76mm or 100mm.
• Better vibration isolation effect with the air Spring at trunnion position
• High weight bearing capacity of center air spring support and good low-frequency performance.
• Equipped with an automatic centering system, to ensure the armature is always in a balanced position during movement.
• Double magnetic circuit design with low flux leakage and uniform magnetic field.
• Electric power rotating mechanism is configured for Horizontal and vertical switching.
• Two-times-sine shock force (three times optional)
• Lightweight armature and large working table.

The rain test chambers simulates rain/water as per IEC-60529, IS-900 part XVI-1983 and JIS-D 0203-1976 standards, whereas as the characteristic water flow patterns are as per IPX1-IPX6 and R1, R2, S1 & S2.

ARC-IPX1-2-577

In a stainless steel housing a drip tank is placed on over it. The drip tank is made of multiple drip nozzles through which the water flows at the rate of 1mm/min and 3mm/min. The flow rate can be controlled through a flow meter and a valve. A pump is used to fill the drip tank, which cuts off automatically after the tank fills up. The chamber also comes with optional accessories such as a tilting test table placed at the center of the cabinet. The unit under test is fixed on the rotating table for the uniform distribution of water on all sides. An enclosure of Acrylic and Aluminum is also provided on demand.

ARC-IPX3-4-800

The specimen is placed at the centre of the semicircle formed by the oscillating tube which has a radius of 800 mm. Water is then sprayed on the specimen at a defined pressure to test any leakage. A total of 33 number of open holes are provided with a total flow rate of 2.3 l/min to test as per IPX3 whereas as per IPX4, 50 number of open holes are provided with a total flow rate of 3.5 l/min. Even the oscillating tube (which also has spray holes in it) according to IPX3 moves between 60o & 120o across the specimen while it covers 180o as per IPX4.

ARC-IPX3-4-S

The modular design offers a hand held brass shower nozzle with a flow rate of 10 l/min and a variable pressure of 50kPa 150kPa. It also includes two connectors that are positioned at 60o and 180o and directed towards the specimen. The specimen is kept on a tilting test table, which is placed at the center of the cabinet. The unit under test is fixed on the rotating table for the uniform distribution of water on all sides.

ARC-IPX5-6

For IPX5 requirements, a 6.3 mm jet spray nozzle is provided which sprays water at a flow rate of 12.5 l/min +/- 5%. The core of substantial stream is approximately 40 mm in diameter and is kept at a distance of 2500mm to 3000mm from the test table. A pressure gauge, ball valve and connecting hose are equipped with the set up. On the side, for the IPX6 test requirements a 12.5mm Jet Spray Nozzle with a flow rate of 100 l/min +/- 5% is provided. The core of substantial stream is approximately 120 mm in diameter is kept at the distance of 2500mm to 3000mm from the test table. For both, a pressure gauge, ball valve and connecting hose will be provided.

ARC-IPX9K

In this construction 4 jet nozzles are provided with solenoid control, change over relays and logic control that is fed with water at a temperature of 80C water and a pressure of 810 Mpa (80100 bar). The water flows at the flow rate of 1416 l/min. It should be noted that the nozzles should be held at 10 cm 15 cm from the specimen for 30 seconds at different angles of 0, 30, 60 and 90. It also comes with optional accessories such as a tilting test table placed at the center of the cabinet. The unit under test is fixed on the rotating table for the uniform distribution of water on all sides. An enclosure of Acrylic and Aluminum is also provided on demand.

ARC-JIS

The nozzle shaft is fixed at an angle of 45 degree on the topside of the panel chamber. It is equipped with a rain simulation arm and a spray nozzle arm made of stainless steel. Nozzles are kept at right angles from each other and are connected to the nozzle shaft, which are connected to a rotary joint and driven by a geared motor. A centrifugal water pump, flow meter with control valve and pressure gauge are also provided. The entire set up could also be enclosed in an acrylic and aluminum cabinet with rotating tables on demand.

ARC-RTT-500

In this, a rotating test table of 500 mm diameter is kept at the center of the cabinet. The unit under test is fixed on the rotating table for the uniform distribution of water on all sides. The Rotating table also has a provision to tilt upto 15o (as per IPX2).