Trafag,8710,8720,8730,8740,SF6特高壓氣體密度繼電器,氣體密度控制器

Trafag,8710,8720,8730,8740,SF6特高壓氣體密度繼電器,氣體密度控制器

主要技術規(guī)格

主要應用于水處理及高壓開關設備

壓力范圍:0...1 MPa

開關點工廠設定

適用溫度:-40-80度

適用氣體:SF6或其它氣體

精度等級:

30...+50°C: <10 kPa (Filling pressure: <650 kPa)
-30...+50°C: <12 kPa (Filling pressure: <1 MPa)

Trafag,8710,8720,8730,8740,SF6特高壓氣體密度繼電器,氣體密度控制器

主要特點

• Switching point adjustment in factory設定點在工作調整
• Excellent vibration resistance優(yōu)良的抗振性
• No false alarms at low temperatures低溫下沒有誤報警
• Stainless steel sensor不銹鋼傳感器
• Independent, separated circuits獨立的分立電路
• Output: floating change-over contact輸出:微動開關觸點
• Trafag,8710,8720,8730,8740,SF6特高壓氣體密度繼電器,氣體密度控制器

Main characteristics
Gas Density Controller for SF6 and other gases
Principle: R eference gas measurement
Measuring range: 0...1 MPa (0...1000 kPa)
Output: floating change-over contact
Switch point: adjustment in factory

Main features

Exact switching following isochore
Excellent vibration resistance
No false alarms at low temperatures
Stainless steel sensor
Independent, galvanically separated circuits
Option: Version fore lowest temperature ranges

Specifications

Main characteristics

Principle: Reference gas measurement
Measuring range: 0...1 MPa (0...1000 kPa)
Output: floating change-over contact
Switch point: adjustment in factory

Accuracy (@ 20°C)

Switching differential typ.
Microswitch 20: <15 kPa
Microswitch 28/83: <10 kPa
Accuracy of the reference Miroswitch from the reference isochore (see page 4)
-30...+50°C: <10 kPa(Filling pressure: <650 kPa)
-30...+50°C: <12 kPa（Filling pressure: <1 MPa)

Microswitch
Rating: see table
Resistance of insulation: > 2 MΩ
Dielectric strength: 2 kV terminal ground
Life time (mechanical)
Microswitch 20: 1 Mio. cycles
Microswitch 28/83: 10 Mio. cycles
Max. difference from the lowest tothe highest

switching point: 130kPa

Electrical connection
Screwed cable gland: see accessories
Terminal screw: 0.2...2.5 mm2

Environmental conditions
Ambient temperatur: -40....+80°C
With Accessories 68/69: -55....+80°C
Media temperature -40....+80°C
With Accessories 68/69: -55....+80°C
Protection: see page 5
Humidity: max. 95% relative
Vibration
Min. Difference from switch point: 5 kPa
20...80 Hz: 4 g
Shock: 50g/ 11ms

Security
Leakage of Reference
chamber: < 0.5 kPa/ year
(5·10-10 kPa·I·s-1)
Service: none,
switch point checking after 5 years
Reference chamber leakage tests: With Helium gas in vacuum process and integral leakage
test in overpressure process

Mechanical data
Material
Sensor:
Housing: 1.4435 (AISI316L)
Filling: G as
Housing: A lSi10Mg,weatherproof painting
Base plate: A lMgSi1, anodized
Screwed cable gland: brass nickel plated
Weight: ~ 600 g

Electrical data switch

Electrical connection

Protection

Dimensions

Accessories

Ordering information

歡迎致電咨詢訂購Trafag 8710 8720 8730 8740 SF6氣體密度繼電器,氣體密度控制器

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