MGE UPS Systems EPS 7000 user manual Spdt

EPS 7000 Single Module

Q3BP	Optional maintenance bypass circuit breaker (in single-module UPS system); optional mainte-
	nance bypass circuit breaker in MBC cabinet (in shared systems).
Q4S	Control or bypass circuit breaker (in single-module UPS systems); user-supplied bypass AC
	input circuit breaker supplying the SSC (in shared systems).
Q5N	Optional UPS isolation circuit breaker (in single-module UPS systems); UPS module isolation
	circuit breaker (in shared systems); optional SSC isolation circuit breaker (in MBC).
QF1	Battery disconnect circuit breaker.
Remote
emergency power off	A switch used for shutting down electrical equipment from a location away from the equipment.
SCR	Silicon controlled rectifier.
Security bypass (key)	Pushbutton on the hidden panel (UPS modules and SSC) allowing forced transfers and other
	commands to be issued. The security key pushbutton must be held down while the desired
	function is executed.
Shipping damage	Any damage done to an article while it is in transit.
SPDT	Single Pole Double Throw.
SSC	Static switch cabinet (in shared systems).
Static Transfer	An solid state switching mechanism electronically controlled to pass AC power directly from the
	utility to an output load.
Technician	Refers to an electronic technician qualified to maintain and repair electronic equipment. Not
	necessarily qualified to install electrical wiring.
Test connector	DB-9 type connector on the LCD panel allowing MGE UPS SYSTEMS Customer Support
	Service technician to access programmable and diagnostic features of the system.
U	Voltage.
UF	Under frequency.
UL	Underwriters Laboratories, Inc.
UPS	Uninterruptible power system.
UV	Under voltage.
VAC	Volts of alternating current.
Vb	Battery voltage (in volts DC).
VDC	Volts of direct current.
Via	By way of.
VPC	Volts per cell, the measure of the electrical potential of a storage cell, such as a battery.
XFMR	Transformer.

page g — 4 Glossary