ASCO 300 series automatic transfer switches (ATS) comply with UL 1008 standards for ATS. ASCO 300 series automatic transfer switches also comply with CSA C22.2 Section 178 standards for automatic transfer switches. All control functions are UL approved components to ensure that ASCO automatic transfer switches comply with OSHA safety requirements and are accepted by electrical inspectors. ASCO 300 series automatic transfer switches are suitable for emergency and standby power systems. They comply with NEC Article 700 and UL 1008 standards for emergency systems. They are also suitable for NEC Article 517 – Health Care Facilities, NEC Article 701 – Legally Required Standby Systems, NEC Article 702 – Optional Standby Systems, NFPA 99 Health Care Facilities, and NFPA 110 Emergency and Standby Power Systems.
This manual covers the proper installation of the ASCO 300 series Automatic Transfer Switch (ATS), including mounting on a support base, following the supplied wiring diagrams, and complying with national electrical codes. It emphasizes that only qualified, licensed electricians should perform the installation and that power must be disconnected before any wiring work.
The document also details functional testing, manual operation using the maintenance handle, voltage and electrical checks, adjustment of time‑delay settings via DIP switches, and routine preventive maintenance. Additional sections describe control functions, remote control options, and accessory kits such as programmable engine test timers and heating elements. This manual is written in Chinese.
| Rated Voltage | 115‑600 V |
|---|---|
| Number of Poles | 4 |
| Phase Configuration | 1‑phase or 3‑phase |
All power sources must be disconnected, the engine start control set to OFF, and the user must ensure no live conductors are touched to avoid electric shock or burns.