I. Overview
The CT14 spring operated mechanism is an outdoor type, suitable for LW8-40.5 outdoor high-voltage SF6 circuit breakers, and can also be used with other circuit breakers with equivalent closing power. Its performance meets the requirements of GB1984-89 "AC High Voltage Circuit Breakers" and the "Technical Conditions" of this product. The main indicators meet or exceed the IEC standards.
The energy storage methods for the closing spring of the CT14 spring operating mechanism include motor energy storage and manual energy storage; There are also two types of opening and closing operations: electric (electromagnetic) and manual.
CT14 type spring operated mechanism
Installation dimension diagram

2、 Main technical parameters
1. Energy storage motor: adopts a single phase AC/DC dual-purpose series excited motor, and its technical data is shown in the table:
| model |
HDZ-19903A |
HDZ-29903A |
| Rated working voltage (V) |
-110 |
~two hundred and twenty |
| Rated working current (A) |
ten |
seven point five |
| Rated electrical power (W) |
nine hundred and ninety |
nine hundred and ninety |
| Normal operating voltage range |
85% to 110% rated working voltage |
| Energy storage time under rated working voltage (S) |
<15 |
2. The manual energy storage operation force is less than 370N
3. Closing electromagnet: Adopting a spiral tube electromagnet, its technical data is shown in the table:
| Rated working voltage (V) |
~380 |
~220 |
-220 |
-110 |
-48 |
| Rated working current (A) |
two |
three point five |
two point three |
three point five |
nine point five |
| Rated electrical power (W) |
six hundred and ten |
six hundred and ten |
three hundred and eighty |
three hundred and ninety |
four hundred and sixty |
| Coil resistance value at 20 ℃ (Ω) |
eighteen point six |
eight point three |
ninety-five point three |
thirty-two |
five |
| Normal operating voltage range |
85% to 110% rated working voltage |
CT14 type spring operated mechanism