Data
Point Name |
Access |
Value Type |
Point Source |
Description |
Connected
to Emergency |
Read Only |
Digital |
Hard-wired
signal from ATS |
True when
transfer switch is in the emergency position and site load is on Gen power. |
Connected to Utility |
Read
Only |
Digital |
Hard-wired
signal from ATS (can be opposite of Connected to Emergency) |
True
when transfer switch is in the utility position and site load is on utility
power. |
Dispatch |
Read/Write |
Digital |
Hard-wired
remote test signal |
Control
point that when True initiates Generator to start and transfer switch to move
to emergency position putting facility load onto Gen power. False value will send/keep transfer switch
and building load on utility power. |
Load Amps A |
Read
Only |
Analog |
Calculated
based on transfer switch position |
Amps
on leg A measured at load side of transfer switch. |
Load
Amps B |
Read Only |
Analog |
Calculated
based on transfer switch position |
Amps
on leg B measured at load side of transfer switch. |
Load Amps C |
Read
Only |
Analog |
Calculated
based on transfer switch position |
Amps
on leg C measured at load side of transfer switch. |
Load Frequency |
Read
Only |
Analog |
Calculated
based on transfer switch position |
Voltage
frequency measured at load side of transfer switch. |
Load kVAR |
Read
Only |
Analog |
Calculated |
Reactive
power reading measured at the load side of the transfer switch. |
Load kW |
Read
Only |
Analog |
Calculated |
Real
power reading measured at the load side of transfer switch. |
Load kWh |
Read
Only |
Analog |
Calculated
based on transfer switch position |
Total
real power consumption measured at load side of transfer switch. |
Load Power Factor |
Read
Only |
Analog |
Calculated
based on transfer switch position |
Power
factor measured at load side of transfer switch. |
Load Volts AB |
Read
Only |
Analog |
Calculated |
A
to B line-to-line voltage reading at load side of transfer switch. |
Load Volts BC |
Read
Only |
Analog |
Calculated |
B
to C line-to-line voltage reading at load side of transfer switch. |
Load Volts CA |
Read
Only |
Analog |
Calculated |
C
to A line-to-line voltage reading at load side of transfer switch. |
Loss of Utility Voltage |
Read
Only |
Digital |
hard-wired
signal either from ATS or power relay |
True
when a site utility outage is detected. |
Utility
Amps A |
Read Only |
Analog |
Meter |
Amps
on leg A measured at utility side of transfer switch. |
Utility Amps B |
Read
Only |
Analog |
Meter |
Amps
on leg B measured at utility side of transfer switch. |
Utility Amps C |
Read
Only |
Analog |
Meter |
Amps
on leg C measured at utility side of transfer switch. |
Utility Frequency |
Read
Only |
Analog |
Meter |
Voltage
frequency measured at utility side of transfer switch. |
Utility kVAR |
Read
Only |
Analog |
Meter |
Reactive
power reading measured on the utility side of the transfer switch. |
Utility kW |
Read
Only |
Analog |
Meter |
Real
power reading measured at the utility side of transfer switch. |
Utility kWh |
Read
Only |
Analog |
Meter |
Total
real power consumption measured at utility side of transfer switch. |
Utility Power Factor |
Read
Only |
Analog |
Meter |
Power
factor measured at utility side of transfer switch. |
Utility Volts AB |
Read
Only |
Analog |
Meter |
A
to B line-to-line voltage reading at utility side of transfer switch. |
Utility Volts BC |
Read
Only |
Analog |
Meter |
B
to C line-to-line voltage reading at utility side of transfer switch. |
Utility Volts CA |
Read
Only |
Analog |
Meter |
C
to A line-to-line voltage reading at utility side of transfer switch. |