SF6 Gas density relay Magnetically assisted electrical contact pointer relay SF6

SF6 Gas density relay Magnetically assisted electrical contact pointer relay SF6

Diameter of watch circle :100

Calibration pressure PE: subject to customer specifications

Accuracy Specifications:

■ ± 1% at +20 °C ambient temperature

■-20... ±2.5 % at +60 °C ambient temperature, the calibration pressure is consistent with the reference isovolume line (Reference Figure KALI-Chemie AG, Hanover, D? ring, Ph.D., 1979)

Scale range:

Range 0.16... 2.5 MPa vacuum and overpressure range (20 °C ambient temperature and gas phase)

Allowable ambient temperature:

Working: -20 +60 °C (-4 +140 °F), gas phase

Storage: -50 +60 °C (-58 +140 °F)

Process connection:

G ?  B (according to EN 837), radial direct mounting stainless steel, wrench opposite side width 22 mm

Other connection methods or locations can be provided according to customer requirements.

Pressure element:

Stainless steel, welded

Air tightness: leakage rate ≤ 1? 10-9 kPa ?  l / s

Test method: helium mass spectrometry test

Movement: stainless steel, bimetallic sheet (temperature compensation)

Dial: Aluminum

Shell:

Stainless steel, gas filled type

Stainless steel, liquid filling type

Air tightness: leakage rate ≤ 1? 10-6 kPa ?  l / s

Table glass:

Laminated safety glass

Transparent crack resistant plastic

Ring of cover:

Bayonet ring, stainless steel, secured by 3 solder joints

Allowable humidity:

≤ 90% r. h. (non-condensing)

Protection level:

IP 65, according to EN 60529 / IEC 529 standard

Weight:

Gas filled type: about 0.8 kg

Liquid filled type: about 1.2 kg

100% high voltage test:

2 kV, 50 Hz, 1s

Switch contact:

Electrical connection

Electrical junction box cable with M20 x 1.5 locking sleeve cross-sectional area 2.5mm2

Number of switch contacts:

1 magnetically assisted electrical contact

2 magnetically assisted electrical contacts

3 magnetically assisted electrical contacts

Switch direction:

Pressure of descent

Pressure of rise

Switch function:

Open at regular intervals

Normally closed

Switching contact (2 more switching points)

Circuit:

Electrical connection (not applicable to conversion contact)

Electrical isolation

Switch accuracy:

Switch point = calibration pressure PE: see accuracy specification

Switching point ≠ calibration pressure PE: Translate to calibration pressure

Switching voltage:

AC 250 V

Switching power

Gas filled type: 30 W / 50 VA, 1 A

Liquid filling type: 20 W / 20 VA, 1 A

Switching point material :80 % Ag / 20 % Ni, gold plated

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