About the Upgrade Plan for 40.5kV VD4 & HD4 3150A Products
To better meet user needs, ABB has optimized the 40.5kV VD4 and HD4 manual switchgear 3150A product solutions, introducing a φ109mm contact finger scheme. Compared to the original scheme, the new scheme features the following main distinctions:
| Original Proposal | New Plan | |
| VD4 40.31.25 VD4 40.31.31 | 1. Suitable for conventional circuit breakers. 2, Diameter: 79mm The pillar is assembled. Standard with fan included. | 1. Standard circuit breakers and cut capacitors (new addition) 2. Contact diameter: 109mm The pole is of cast type. 4. The fans are to be purchased separately by the customer. |
| HD4 40.31.25 HD4 40.31.31 | 1. Standard Circuit Breakers and Low-Temperature Circuit Breakers 2. Contact diameter of 79mm Standard with fan included. | 1. Standard circuit breakers and low-temperature circuit breakers 2. Terminal diameter: 109mm Turbines are to be purchased separately by the customer. |
As of midnight on August 1, 2022, the new plan is now in effect.
