Overview of Box type transformer:
The YB (ZBW) series of high-voltage/low-voltage prefabricated substations have the characteristics of strong complete set, small size, compact structure, safe and reliable operation, convenient maintenance and mobility. Compared with conventional substations, they are box-type substations of the same capacity. The floor area is usually only 1/10-1/5 of the conventional substation, which greatly reduces the design workload and construction volume, and reduces the construction cost. In the power distribution system, it can be used in the ring network power distribution system project, and can also be used in the dual power supply or radiation terminal power distribution system. It is a new complete set of equipment for the construction and distribution of urban and rural substations.
The YB (ZBW) series of high-voltage/low-voltage prefabricated substations meet the standards of SD320-92 "Technical Conditions for Box-type Substations" and 2BK-4001-89 "Combined Substations".
Classification:
According to the shell, it can be divided into four types:
1. CMJB 1 type combined substation.
2. Color steel composite board box type transformer.
3. Metal box transformer
4. Landscape box transformer
According to the function, it can be divided into 3 types:
1. high supply high meter ring network.
2. General ring net box substation (FN12).
3. terminal box change
Features:
1.High voltage incoming cabinet Vs1 (relay protection or microcomputer protection)
2.Measuring cabinet
3.PT cabinet
4.Ring network cabinet (for other offline contacts)
5.Transformer cabinet
Parameter of Box type transformer:
| No | Item | Unit | Value |
| 1 | Rated Voltage | KV | 7.2，12 |
| 2 | Frequency | HZ | 50 (60) |
| 3 | Main circuit rated current | A | 400-630 |
| 4 | 4S thermal stability current | KA | 20 |
| 5 | Power frequency withstand voltage | KV | 42 |
| 6 | Lightning impulse withstand voltage | KV | 75 |
| 7 | Enclosure rating | Shell IP43 | |
| 8 | Transformer capacity | KVA | 50-2000 |
Test Instruments:
Inspection and testing is the key to ensure the quality of products. ZTelec Group employs the most rigid production inspection criteria at each manufacturing stage to eliminate unqualified products by utilisting the most advanced inspection instruments from around the word. To ensure the best quality products could be delivered to users.
Package of Box type transformer:
Certification of Box type transformer:
