Vanguard UPS S2 - Manual (Page 5)

Operating Procedures UPS-S2 
2
1.0 INTRODUCTION
1.1.General Description
The Vanguard Universal Power Supply Series 2 (UPS-S2) is designed and produced to meet a
utility company’s substation need for an independent AC/DC power source. Both the AC and
DC voltage sources are capable of supplying 10 amperes continuously.
The variable output DC power supply (1-300Vdc) is ideal for use as a substitute primary power
source when station batteries are not available. It is ideal for operating Circuit Breakers,
powering substation relays, or for unregulated charging of substation batteries.
The AC power supply is a variable (1-240Vac) isolated power source that can be used to power
other equipment in the substation.
Main features of the Universal Power Supply are:
1. All output power sources are isolated from the primary power input by an isolation
transformer.
2. Voltage outputs are continuously variable (auto-transformer) with a Front Panel
control knob.
3. The Universal Power Supply’s primary power input is user selectable to be either
120Vac or 240Vac.
4. All voltage outputs are capable of supplying a continuous 10 ampere load
5. The power output routing path is clearly outlined on the Control Panel, which allows
users to intuitively make the appropriate control function selections for the desired
operating configuration.
The UPS-S2 is contained in a heavy duty, impact resistance plastic case. Each Universal Power
Supply is warranted by Vanguard Instruments Incorporated for one year and covers parts and
labor for failures resulting under normal use.
1.4 Furnished Test Accessories
The UPS-S2 is supplied with a power cord, one ground cable, two 10-foot test lead sets with
alligator clips.