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Operation 31
3.1.2 Monitor/Mimic Display Screen
From SCC Master Menu move the highlighted cursor to MONITOR/MIMIC DISPLAY. Press the Select pa d
and t he Monitor/Mimic screen is displayed.
The Monitor/Mimic display screen is a simplified block diagram of the UPS system. This screen gives the oper-
ator an overall view of the power flow through the UPS system. The screen consists of three major sections: the
input/UPS metering section, the load metering section, and the status and alarm message areas. The metered
parameter values on the Monitor/Mimic screen are updated at one-second intervals.
Figure 14 SCC Monitor/Mimic Display Screen
Input Metering Displays
Item 1 - Bypass Input. This block displays the bypass input voltage and the bypass input frequency. The System
Bypass Breaker is shown to the right of this block. The status of the circuit breaker is illustrated as open or
closed.
Item 2 - UPS Input Pwr. This block displays the input voltage to t he UPS modules.
Output Metering Displays
Item 3 - UPS Ratings. The SCC current rating is specified at the top of this block. The UPS system output volt-
age and frequency are also displayed in this block. The UPS Output Breaker is shown to the right of this block.
The status of the circuit breaker is illustrated as open or closed.
Item 4 - Load. This block displays the total output power to the critical load in kVA and kW. The critical load
current per phase is also displayed in this block. Note that kW is not displayed when the load is on the bypass
line.
The load block also indicates the number of modules connected and whether the UPS system is operating in the
redundant or non-redundant mode.
During an overload condition, the time remaining before shutdown or transfer is displayed at the bottom of the
load box.
NOTE
All voltage readings are phase-to-phase measurements (A-B, B-C, and C-A). All
current readings are phase measurements (A, B, and C).
UPS INPUT PWR
480V 480V 480V
UPSRATINGS
A-B B-C C-A
480V 480V 480V
60.0Hz
SCCB1600
OUTPUT VOLTAGE
BYPASS INPUT
A-B B-C C-A
480V 480V 480V
60.0 Hz
LOAD
ABC
627 KVA/ 502 KW
755A 755A 755A
3OF 3MODULES
CONNECTED
REDUNDANT
A-B B-C C-A
OKto Transfer
Static Switch Connected
2
5
4
3
6
7
1
MOD1 ON LINE
MOD2 ON LINE
MOD3 ON LINE
DISCONTINUED
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