Page 48 - YINGMING POWER(HIGH VOLTAGE)

YINGMING POWER

GN30-12

INDOOR ROTARY HIGH VOLTAGE
ISOLATING SWITCH

Overview
GN30-12 rotary indoor high-voltage isolating switch is a new type of rotary contact knife isolating switch. The main structure is to fix two sets of
insulators and contacts on the upper and lower planes of the three-phase common chassis. Rotate the contact knife to realize the opening and closing
of the switch.
GN30-12D type switch is based on GN30-12 type switch to add a form with a grounding knife, which can meet the needs of different power systems.
This product has compact design, small space occupation, strong insulation capacity, easy installation and adjustment, and its performance meets the
requirements of GB1985-89 "AC high-voltage disconnector and grounding switch". It is suitable for indoor systems with rated voltage of 10 kV and
AC 50 Hz and below , Used as a switching circuit in the case of voltage and no load. It can be used in conjunction with high-voltage switchgear or
separately.

Model meaning Conditions of Use
G N 30 - 12 (D) / □ - □ ◆ Altitude: no more than 1000m;
◆ Air temperature: upper limit + 40 ℃ ; lower limit -10 ℃ ;
Thermally stable current (4S)
Rated current (A) ◆ Relative humidity: daily average value is not greater than 95%; monthly average
value is not greater than 90%;
With grounding switch ◆ Earthquake intensity: no more than 8 degrees;
Rated voltage (kV) ◆ Pollution level: no serious dust, chemically corrosive and explosive substances;
Design Number ◆ Installation site: a place without frequent severe vibration.
Indoor type
Isolating switch

The main technical parameters

GN30-12/400-12.5 GN30-12/630-20 GN30-12/1000-31.5 GN30-12/1250-31.5
project
GN30-12D/400-12.5 GN30-12D/630-20 GN30-12D/1000-31.5 GN30-12D/1250-31.5
Rated voltage (kV) 2
Rated current (A) 400 630 1000 1250
Thermally stable current (KA) 12.5 20 31.5
Thermal stability time (S) 4
Dynamic stable current (KA) 31.5 50 80
Lightning impulse voltage
Rated (kV) Interphase, phase to ground 75, fracture 85
insulation
level 1min power frequency Alternating phase, phase 42, fracture 48
withstand voltage (kV)
41