简体中文
English
Table 1: Substation part
Project | Pilot projects | Category | Recommended equipment |
1 | Insulation safety tools, transformers, circuit breakers, insulators, etc. | Test of insulation resistance, closing ratio and polarization index of transformer | |
DC leakage test of transformer | |||
The fracture withstand voltage of the circuit breaker, the overall ground withstand voltage and the AC withstand voltage of the transformer after closing; the withstand voltage of insulation safety tools and insulators, etc., and the insulation withstand voltage test of other items. | YNYDJ power frequency withstand voltage test device | ||
Discharge rod | |||
2 | Transformer, PT, CT, fox-killing coil, reactor | Test the coils of transformers, PTs, CTs, reactors, etc. for internal welding defects and for inter-turn interlayer short circuits, as well as measuring the tap position of the transformer. | |
Test the transformer's transformation ratio group, PT, single-phase transformer's transformation ratio polarity, etc., to understand whether the change, group, and polarity meet the parallel (series) operation conditions. | |||
Transformer no-load test, check the no-load loss and load loss of the transformer, and check whether the transformer meets the energy-saving standards. | |||
Transformer capacity test, to check whether the transformer capacity meets the design requirements. | |||
3 | Circuit breakers, load switches, etc. | In the closed state, measure the contact resistance of the circuit breaker, load switch, etc. to see if it meets the operating conditions. | |
Test the time characteristics and mechanical characteristics (dynamic characteristics) of high-voltage circuit breakers to understand whether they meet the requirements of system operation. | |||
For the vacuum test of the vacuum circuit breaker, see if the arc extinguishing conditions are met. | |||
4 | Zinc oxide arrester | Measure the U1mA and 0.751mA of the zinc oxide arrester to check the residual voltage characteristics of the arrester. |
Table 2: Secondary protection part
Project | Pilot projects | Category | Recommended equipment |
1 | CT volt-ampere characteristics | For the 5% or 10% error curve and change of CT, polarity measurement is performed to verify whether it meets the requirements of the protection device. | |
2 | Microcomputer integrated protection device | Test the fixed value of the microcomputer integrated protection device, test the whole group of projects, and test the linkage projects. |
Table 3: Line section
Project | Pilot projects | Category | Recommended equipment |
1 | High voltage cable | The cable fault tester handles the fault point of the faulty cable. | |
The AC withstand voltage test of high-voltage cables is to check whether the cable head that can be processed by the cable meets the requirements of operating voltage. Because the implementation of power frequency withstand voltage is poor, the implementation of | |||
2 | Nuclear phase | Phase check of the line |
Table 4: Oil test part
Project | Pilot projects | Category | Recommended equipment |
1 | Insulating oil | For the dielectric strength test of the insulating oil in the oil transformer, oil CT/PT and other equipment, check whether it meets the insulation requirements. |
For more information about Yuenenggao products, please click Product Center. Service hotline: 027-81314188, 18627106286.
Enter the mobile station
