QY-ESTS-03 Bench System Neutral clarify the current safe use of electricity, IT, TN or TT power distribution system standard requirements and the theoretical basis of the experimental device is divided into a TN or TT system face with IT systems face, two face each other independent internal contains thermal magnetic circuit breakers, earth leakage protection device protection switches, contactors. When the equipment is operated, the operator need to operate under the supervision of the facility administrator or teacher, to prevent the operator from shock hazard. 2Electrical Characteristics 2.1 Structural features: * Dimensions: L x W x H (mm): 842x 662x 1900 (mm). * Weight: 230kg 2.2 Electrical Characteristics * The equipmentAC400V three phase + T power 4kVA. * Supply voltage: AC400Vthree-phase ± 10% + PE. * Supply frequency: 50Hz ± 5%. 3 Training Project 1、IT under-current protection experiment 2、IT lower leakage test 3、electric shock experiments under IT 4、TT under shock experiments 5、TN under shock experiments 6、the leakage current trigger experimentss 7、 XM200 use experiments 8、electric shock under comprehensive experimental IT