1.The experimental subject for the equipment that Party A purchased
from Party B meet the following requirements:
■ 35kV ordinary power transformers and special transformers,
capacity 20000kVA and below;
2 The experimental subject for the equipment that Party A purchased
from Party B must meet the following requirements of voltage
classes:
The impedance of the tested transformer is less than 8%, the
voltage class is:
■ HV side 35kV, etc.
■ 0.4kV～10kV.LV side:0.4kV～10kV.
3. The experimental subject for the equipment that Party A
purchased from Party B meet the following requirements of tested
capacity:
HV side voltage level 22kV capacity 2000kVA and below.
4. The experimental subject for the equipment that Party A
purchased from Party B must meet the following test requirements:
4.1 Routine testing
■ Transformer no-load current percentage and no-load loss testing;
■ Transformer short-circuit impedance percentage and load loss
testing;
■ Transformer power frequency withstand voltage testing;
■ Transformer frequency doubling induced withstand voltage testing;
5 Based on the analysis of experimental ability, the experimental
subject for the equipment that Party A purchased from Party B meet
the following test ability:
5.1 No-load and load loss test ability
■ For the voltage level of 0.4kV/33kV distribution transformer,
it’s ok to use the direct low-voltage circuit testing for no-load
and load loss.
■ In conclusion, High voltage current transformer of the variable
ratio gear selection (Rated working voltage:3KV):
200/1,100/1,50/1,30/1,20/1,10/1,5/1,1A/1A, total:8 speed, precision
grade:0.05%; voltage transformer of the variable ratio gear
selection: 3kV/100V,2kV/100V,1KV/100V,0.5KV/100V,total:4 speed,
precision grade:0.05%.
