wuxi kaifeng pressure gauge co., ltd
+86-0510-83706687
Brand: WXKF
Warranty: 1 Year
Type: Gas Density Relay
Customized Support: Oem, Odm
Brand Name: WXKF
Model Number: KMJ100
Product Name: KMJ SF6 Gas Density Relay
Nominal Diameter: 64/100mm
Connection: General type with bottom connection
Measuring Range: -0.1~ 0.1MPa ; -0.1~0.15Mpa; 0 ~ 2.0bar
Precision Class: 20℃ : class 1.5;-30℃~+60℃: class 2.5
Working Environment: -30℃~60℃, relative humidity:≤95% PH
Lmpact Class: 30g(general); 50g (shockproof)
Warranty Period: 3 Years
Certification: Csa, ISO,ce
Support Customization: Oem, Odm
Place Of Origin: Jiangsu, China
Packaging: carton
Productivity: 300 millions
Transportation: Ocean,Land,Air,Express,Express
Place of Origin: China
Certificate: ISO9001
HS Code: 9026209090
Port: Shanghai Port
Payment Type: L/C,T/T,D/P,D/A,Paypal,Money Gram,Western Union,D/A
Incoterm: FOB,CFR,CIF,EXW,FAS,FCA,CPT,CIP,DEQ,DDP,DDU,Express Delivery,DAF,DES
Sf6 Gas Density is applicable for monitoring the SF6 gas density in a sealed vessel. It can show gas density values on the site. When the gas density reaches the preset value, the contact-making device will send alarm and control signals. It can be widely used in electric equipment including SF6-insulated composite apparatus, circuit breakers, pole-mounted switches, transformers and mutual inductors. It provides solutions for new construction of transformer substations and intelligent reconstruction of existing transformer substations.
| Working environment: | -30℃~60℃, relative humidity:≤95% PH |
| lngress Protection | IP 65 |
| Vibration resistance in working environment | class 1 (general); class 2 (shockproof) |
| lmpact class | 30g(general); 50g (shockproof) |
| Leakage ratio | ≤1x10-9 Pa.m3/s (helium leak detection) |
| Contact type | magnetic aid electric contact switch 80%silver, 20%nickel, 10µm gold plated |
| Electric parameters of the contact | AC: 30VA 380V 1.0A DC: 30W 220V 1.0A |
| lnsulation performance insulating resistance | 100MΩ (500VDC) |
| Power-frequency withstand voltage | 2000V 45/60HZ.1 min |
KMJ SF6 Gas Density Relay
It is applicable for monitoring the SF6 gas density in a sealed vessel. It can show gas density values on the site. When the gas density reaches the preset
value, the contact-making device will send alarm and control signals. It can be widely used in electric equipment including SF6-insulated composite apparatus, circuit
breakers, pole-mounted switches,transformers and mutual inductors. It provides solutions for new construction of transformer substations and intelligent reconstruction
of existing transformer substations.
Working Mechanism
We take the SF6 gas pressure value under 20C as the representative value of its density and also as the scale value. When the ambient temperature changes, the temperature compensation elements will compensate for the gas pressure change caused by the temperature change. Therefore, as long as the SF6 gas density remains unchanged, the indication value of the density meter will keep the same .
When SF6 gas is filled into the sealed vessel or the gas changes, pressure sensing elements will make displacement which is converted into the indication value through the drive mechanism. When the ambient temperature change induces the indication value change, the temperature compensation elements will make compensation and correction.
Take the rated value of 1.4 bar as an example: take 20 ℃ as the boundary. When the ambient temperature is lower than 20 ℃, the indicating value is larger (+ 2.5%); when the ambient temperature is higher than 20 ℃, the indicating value is smaller (- 2.5%); when the ambient temperature is 20 ℃, the indicating value is 1.4 bar (± 1.5%).
In the electric contact unit, when SF6 gas density lowers to certain preset value, correct and reliable alarm or lock control signals will be sent out to ensure normal and safe operation of the electric equipment.
1. Electric contact switch design realizes accurate and reliable SF6 gas monitoring functions.
2. With temperature compensation, the compensation performance is stable and the detection precision is high.
3. On-site display values and output contact signals are not affected by external conditions including the altitude and ambient temperature change.
4. Core elements are made of imported materials with high precision.
5. Good shockproof performance.
6. There are three contact groups at most, which can realize several options including overpressure alarm, double alarm or double lock and make the monitoring safer and more reliable.
7.Gas fill, micro-water test and calibration can be implemented without removal of the SF6 gas density relay, making it easy for on-site staff to conduct micro-water test and gas supplementand avoiding the seal face and seal ring damage arising from removal.
8.304 stainless steel is adopted for the sealed case, which prevents both moisture and corrosion.
Product Categories : Gas Density Monitor > SF6 Gas Density Monitor
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