Deskripsi
Oil Level Gauge
The pointer-type oil level gauge (hereinafter referred to as oil level gauge or oil level meter) for YZF, YZS, and YZFM series transformers is an oil level testing device for the transformer oil tank. Its main structure includes: sensing part (straight rod float or telescopic rod), transmission part, magnetic coupler, indicating part, and alarm part. The sensing part transmits the oil level height through the transmission part and the magnetic coupler to drive the indicating part, finally indicating the oil level height through the pointer on the scale plate, and issuing an alarm signal at the highest and lowest oil levels, achieving the purpose of remote monitoring.
Model Description:
Example: YZF3-200TH indicates (F) straight rod float type, 3rd design, dial diameter is φ200mm, pointer-type oil gauge for humid and hot regions.
Note: 1. Connecting rod structure: F is straight rod float type; S is telescopic rod.
2. Special environment: “TH” is for humid and hot regions, “TA” is for tropical dry regions, and general types are not specified.
3. If SD is marked, it is double low oil level; if SG is marked, it is double high oil level.
Technical Parameters:
Air temperature: -45℃~+55℃
Relative humidity: When the air temperature is 25℃, the relative humidity is no more than 90%.
Oil temperature not higher than 90℃.
Places without violent vibration and bumps
Indicating error: Less than 2.5% of the full scale
Contact Capacity:
| Power Supply Type | Working Voltage | Working Current |
| AC | 220V | 5A |
| DC | 0.3A |
Wiring Diagram:
Oil Level Gauge Installation Dimension Table:
Unit (units) mm Outlet (size): M20X1.5
| Model | Flange Outer Diameter | Installation Hole Pitch Circle | Gasket Specification | Installation Hole | Installation Flange Opening |
| YZF1-90 | φ90 | φ75 | φ62×φ54×φ4 | 4-M8 | φ50 |
| YZF1/2-140 | φ140 | φ116 | φ100×φ90×φ5 | 4-M10 | φ82 |
| YZF3-140 | φ140 | φ116 | φ100×φ90×φ5 | 4-M10 | φ82 |
| YZF1/2-200 | φ160 | φ135/φ138 | φ120×φ106×φ7 | 6-M10 | φ100 |
| YZF1-250 | φ160 | φ135/φ138 | φ120×φ106×φ7 | 6-M10 | φ100 |
| YZF3-200 | φ156 | φ130/φ135 | φ115×φ105×φ5 | 6-M10 | φ100 |
| YZF2/3-250 | φ156 | φ130/φ135 | φ115×φ105×φ5 | 6-M10 | φ100 |
Recommended Lever Arm Selection Table:
Unit (units) mm
| Model | YZF1-90 | YZF1/2-140 | YZF1/2-200 | YZF1-250 | YZF3-140 | YZF3-200 | YZF2/3-250 |
| Rod Length | L=D/2-45/2-10=D/2-33 | L=D/2-10-80/2=D/2-50 | L=1.414*(D-2*A) | ||||
| D≤500，A=80，D>500，A=100 | |||||||
Recommended Lever Arm Selection Table:
| Model | Dial Diameter mm | Pointer Angle | Lever Arm Position at Lowest Oil Level | Lever Arm Rotation Angle | Installation Position |
| YZF1-90 | φ90 | 120° | Downward inclination 60° | 120° | Center of the oil tank side wall |
| YZF1/2-140 | φ140 | 120° | Downward inclination 60° | 120° | Center of the oil tank side wall |
| YZF3-140 | φ140 | 270° | Horizontal | 45° | Below the side wall of the oil tank |
| YZF3-140 (Integrated) |
φ140 | 270° | Horizontal | 45° | Below the side wall of the oil tank |
| YZF3-140（120°） | φ140 | 120° | Horizontal | 45° | Center of the oil tank side wall |
| YZF1/2-200 | φ200 | 120° | Downward inclination 60° | 120° | Center of the oil tank side wall |
| YZF3-200 | φ200 | 270° | Horizontal | 45° | Below the side wall of the oil tank |
| YZF1-250 | φ250 | 120° | Downward inclination 60° | 120° | Center of the oil tank side wall |
| YZF2/3-250 | φ250 | 270° | Horizontal | 45° | Below the side wall of the oil tank |
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