Holding force (hoists) tester (electric model) Product Overview: ???? The test device is used to test the ability of the test plug wire compression. During the test, the plug up, plug wire through the bars, the lower plug wire hanging prescribed weight, and then turn the wrench, the plug in the load in the rate of 1 per second, bobbing up and down 100 times, then test plug is damaged. Comply with UL-817, IEC and GB standards relating to the technical requirements. Parameters: 1, weight: 50,60,80,100N ?????? ???? 2, eccentric stroke: 65mm ???????? ?? 3, the electric type: rotational speed: sec 1 ??? ??????? 4, Counter: 0 ~ 9999