1. Product introduction:
1.1 Product name and model:17.5kV Pad mounted primary metering cabinet PMY9-17.5, JLSZXW9-17.5 combined transformer
1.2 Product overview:
The metering cabinet is for outdoor cabinet type one-piece three-phase primary metering unit , inside has assembled a combination of three independent voltage transformer and current transformer, voltage transformers are made up of three-phase Y-Y star connection, current transformers can be 2pcs or 3pcs optional configuration, cabinet adopts zinc steel, stainless steel or aluminum alloy etc, cabinet surface spraying protection layer resistant to acid and alkali corrosion , prevent the UV irradiation, suitable for outdoor underground cable connected to the public power system. The metering cabinet has installed complete measuring meter box or interval, instrument transformers’ secondary lead all converge in meter box, equipped with test terminal blocks and electric meter installation space, can be configured as required when using electric meter or the user configuration of watt-hour meter can access, suitable for high voltage equipment in urban power distribution network line 17.5 kV and below for electric energy metering, current and voltage measurements.
1.3 Basic parameters:
No. | item | units | specification |
| Highest voltage for
| kV | 17.5 |
| rated frequency (fR) | Hz | 50, 60 or 50/60 |
| Rated lightning impulse
| kV | 95 ,110 |
| Rated power-frequency
| kV | 38 |
| Rated power-frequency
| kV | 3 |
| Number of CTs and VTs | pcs | 3VT+3CT or 2CT+3VT |
| Standard | / | IEC 61869-1:2007, IEC 61869-2:2012 IEC 61869-3:2011,IEC 61869-4:2013 |
No | Item | Parameters |
| Rated primary current | 5A up to 600A |
| Rated secondary current | 5A or 1A |
| Rated Continuous Thermal Current | 120%,125%,150%,200% etc. |
| Rated Short time current (Ith) (thermal 1 second) | 80xIpr,100xIpr |
| Rated Dynamic Current (Idyn) | 2.5xIth |
| Rated Output(VA) | 12.5,15,20 |
| Accuracy Class | 0.2S,0.2,0.5S,0.5,1 Metering |
| Instrument Security Factor (FS) | 5,10,20 |
| Applicable Standard | IEC: 61869-1&2 |
No | Item | Parameters |
| Rated primary voltage(V) | 13200/√3,13800/√3,7200,8400 |
| Rated secondary voltage(V) | 100/√3,110/√3,110,120,115 |
| Rated Voltage Factor | 1.2/Continuous 1.5/30s,1.9/30s,1.9/8h |
| Standard connection | Y-Y(star connection) |
| Rated Output(VA) | 15,20,25,30,50,75 |
| Accuracy Class | 0.2,0.5,1,3 Metering |
| Thermal burden(VA) | 500 |
| Applicable Standard | IEC: 61869-1&3 |