An overview,
1.1. GG - 1 a (F) (Z) type high voltage switchgear by mistake, the original GG - 1 a type high pressure tank on the basis of improved after adding "five prevention" locked-in send products, it has the following five kinds of prevent wrong operation function; 
Between a. to prevent wrong, wrong points wrong or circuit breaker; 
B. to prevent loading points, isolating switch; 
C. avoid straying into charged interval;
D. prevent charged hang ground;
E. prevent line brake band.
1.2. GG - 1 a (F) the mistake type high voltage switchgear, suitable for 3, 6 and 10 kv ac system for acceptance and distribution of electrical energy (see table 1) have a way.This product is a indoor type, can be in normal operation in the environment of the following:
A. installation height is not more than 1000 meters above sea level;
B. the surrounding medium temperature is not higher than + 40 oc, no less than 20 oc;
C. indoor relative humidity is not more than 85%; 
D. no conductive dust and can destroy the place of gas and metal and insulation; 
E. no explosive dangerous location; 
F. no violent vibration and bo top and vertical gradient is less than 5 degrees.
Second, the technical data and programs
2.1. GG - 1 a (F) (Z) type high voltage switchgear technology parameters are shown in table 2. 
2.2. General atresia primary loop scheme are shown in table 3-1.General closure does not consider 21 ~ 22, 25 to 28, 31 ~ 33 and 37 ~ 39 main circuit scheme, at the same time also does not consider the breaker with CS2 type operating mechanism. 
The primary loop scheme are shown in table 2.3. Simple atresia 3-2.