Installation Manual
L | Line. |
LCD | |
LED | Light Emitting Diode. |
Load protected | The attached load is being supplied by the UPS module inverter output, and the battery |
| is available in the event that incoming (utility) power is lost. |
Load not protected | The attached load is being supplied, but the battery system is unavailable. |
Low battery |
|
Shutdown | The battery has reached the lowest permitted operating voltage, and the inverter has shut |
| down (disconnecting the load) to protect the battery from damage due to further discharge. |
Mains or Mains 1 | Main AC input source. |
Mains 2 | Bypass AC input source. |
mA | Milliampere. |
MAX. | Maximum. |
MCM | Thousand circular mil; standard wire sizes for multiple stranded conductors over 4/0 AWG in |
| diameter. M is from Roman numerical system indicating 1000. |
Module | Refers to individual power inverter module. |
N | Neutral. |
NC | Normally close. |
NO | Normally open. |
NEC | National Electrical Code. |
NFPA | National Fire Protection Association. |
NO. or No. | Part number. |
The attached load is being supplied by the stored energy in the battery system. | |
Inverter output power is the primary energy source to load. | |
Inverter output is off, and the load connected at the inverter output receives power from utility | |
| line via a static transfer switch or maintenance bypass relay. |
OSHA | Occupational Safety and Health Agency. |
PCB | Printed circuit assembly. |
PCB | Printed circuit board. |
PWM | Pulse Width Modulation. |
Q1 | UPS input isolation circuit breaker. |
Q3BP | Optional maintenance bypass circuit breaker (in |
| nance bypass circuit breaker in MBC cabinet (in shared systems). |
Glossary | page g — 3 |