2. The external dimensions and weight of the equipment are shown in Table 1 and Figure 1.

Table 1

Note: * The short circuit capacity of the current transformer should be considered separately.

? Technical parameters of vacuum circuit breaker

Note: 1. The average opening speed refers to the average speed of the circuit breaker contact just after 6mm;
2. The average closing speed refers to the average speed of the full opening distance of the circuit breaker.

4. Structure
The equipment is designed according to the armored metal-enclosed switchgear in GB3906. The whole body is composed of two parts: the cabinet and the middle-mounted removable parts (ie, the handcart), as shown in Figure 2. The cabinet is divided into four separate compartments, the enclosure is IP4X, and the protection level is IP2X when the compartments and circuit breaker compartments are open. With overhead access lines, cable access lines and other functional solutions, the switch cabinets of each solution can be arranged to form a power distribution device capable of designing functions according to the application. The unit can be installed, commissioned and maintained from the front, so it can be stacked back-to-back or wall-mounted, increasing equipment safety, flexiblity and floor space

Figure 2 Grounding diagram of switchgear

Table 4