QYW9 series transformer multi-function protector
The QYW9 series transformer multifunctional protector has the following functions: remote display and protection of transformer temperature, pressure overload protection (heavy gas protection), light gas protection, oil injection, oil replenishment, venting, etc. The product also has the functions of pressure release and oil level display. This product has a compact structure and complete functions. It can provide protection for various parameters of transformer operation, greatly facilitating the power supply department to monitor the operation of the transformer and diagnose transformer accidents. It is a replacement product for transformer protectors and can be used for oil-immersed transformers, oil-immersed reactors, and power capacitors, especially suitable for fully sealed transformers and box-type substations.
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Product Description
Product Introduction
The QYW9 series transformer multifunctional protector has the following functions: remote display and protection of transformer temperature, pressure overload protection (heavy gas protection), light gas protection, oil injection, oil replenishment, venting, etc. The product also has the functions of pressure release and oil level display. This product has a compact structure and complete functions. It can provide protection for various parameters of transformer operation, greatly facilitating the power supply department to monitor the operation of the transformer and diagnose transformer accidents. It is a replacement product for transformer protectors and can be used for oil-immersed transformers, oil-immersed reactors, and power capacitors, especially suitable for fully sealed transformers and box-type substations.
Model Description
Example: QYW9-I/30-10-85-35 represents the I-type multifunctional protector of the 9th design, with a pressure relay alarm value of 30kPa, a light gas alarm oil level of 10mm below the transformer tank cover, an alarm temperature of 85℃, and a pressure relief valve opening pressure value of 35kPa.
Conditions of Use
Ambient temperature: -45℃~50℃, Allowable operating temperature: -45℃~105℃
Installation location: On the transformer tank cover
Wiring Diagram and Contact Capacity
| Power Supply Type | Load | Working Voltage | Gas Detection Contact Capacity | Pressure Switch Contact Capacity | Temperature Controller Contact Capacity | Description |
| AC | Resistive | 220V | 1A | 5A | 1A | - |
| Inductive | 1A | 3A | 3A | Cosφ≥0.6 | ||
| DC | - | 0.5A | 0.5A | 0.5A | T≤5ms |
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