GE Feeder Management Relay 750 User Manual

6-12 750/760 Feeder Management Relay GE Multilin
6.3 A2 METERING 6 ACTUAL VALUES
6
The actual values messages for three-phase and Phase A power are shown above. Similar power messages follow for
Phases B and C.
The relay calculates and displays the real, reactive, and apparent power of the system. Both three phase and single phase
quantities are given. The relationship of these power quantities is illustrated in the power plane, as shown in the power
quantity relationships figure that follows. If the VT CONNECTION TYPE setpoint "None", all three phase quantities are dis-
played as zero and all single phase quantities disappear. All power quantities auto-range to show units appropriate to the
nominal power which is defined as:
(EQ 6.11)
6.3.7 ENERGY
PATH: ACTUAL VALUES ÖØ A2 METERING ÖØ ENERGY
The relay uses three phase power quantities to determine total energy consumption. All energy quantities can be reset to
zero with the
S1 RELAY SETUP ÖØ CLEAR DATA ÖØ CLEAR ENERGY USE DATA setpoint command. Energy cost is also calcu-
lated based on the average billing rate programmed in the S2 SYSTEM SETUP ÖØ PWR SYSTEM ÖØ COST OF ENERGY set-
point. Although billing rate structures are usually more complex, these values provide approximate costs. Energy quantities
auto-range to show units appropriate to the nominal power.
Power quantities in the positive direction are added to the positive values; power quantities in the opposite direction are
added to the negative values.
The 750/760 is not a revenue class meter and cannot be used for billing purposes.
Table 6–1: POWER QUANTITIES
NOMINAL POWER (P
N
) POWER UNITS RESOLUTION
P
N
< 1 MVA kW, kvar, kVA, kWhr, kvarhr 1
1 MVA ≤ P
N
< 10 MVA MW, Mvar, MVA, MWhr, Mvarh 0.01
10 MVA ≤ P
N
MW, Mvar, MVA, MWhr, Mvarh 0.1
 ENERGY
 [ENTER] for more
POSITIVE WATTHOURS:
0.0 MWh
Range: 0 to 4 x 10
6
MWh. See Table 6–1: Power
Quantities for further explanation of units.
POSITIVE WATTHOUR
COST: $ 0
Range: 0 to $4 x 10
9
NEGATIVE WATTHOURS:
0.0 MWh
Range: 0 to 4 x 10
6
MWh. See Table 6–1: Power
Quantities for further explanation of units.
NEGATIVE WATTHOUR
COST: $ 0
Range: 0 to $4 x 10
9
POSITIVE VARHOURS:
0.0 Mvarh
Range: 0 to 4 x 10
6
Mvarh. See Table 6–1: Power
Quantities for further explanation of units.
NEGATIVE VARHOURS:
0.0 Mvarh
Range: 0 to 4 x 10
6
Mvarh. See Table 6–1: Power
Quantities for further explanation of units.
ENERGY USE DATA LAST
RESET: Mar 16 1997
Range: Date in format shown
P
N
Phase CT Primary VT Secondary Voltage VT Ratio××=
ENTER
ESCAPE
ð
ð
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
NOTE
Courtesy of NationalSwitchgear.com

GE Feeder Management Relay 750 Specifications

General

Brand	GE
Model	Feeder Management Relay 750
Category	Protection Device
Language	English