System Setup; Ac Inputs; Power System - GE B90 Instruction Manual

CHAPTER 5: SETTINGS
— To safeguard against the installation of a relay without any entered settings, the unit does not allow
RELAY SETTINGS
signaling of any output relay until
UNIT NOT PROGRAMMED self-test error message displays until the relay is put into the "Programmed" state.
— This setting allows the user to uniquely identify a relay. This name appears on generated reports.
RELAY NAME

5.4 System setup

5.4.1 AC inputs

5.4.1.1 Current terminals
SETTINGS  SYSTEM SETUP  AC INPUTS  CURRENT TERMINAL F1(S8)
 CURRENT
 TERMINAL F1
This menu configures the AC current inputs. Upon power up, the B90 recognizes all the AC modules loaded in its chassis
and populates the above menu accordingly.
The current terminals are denoted in the following format: Xa, where X = {F, L, S} and a = (1, 2,..., 8}. X represents the chassis
slot containing the AC input module and a represents the AC channel of each module. For example, a B90 unit containing
the F8H and L8K modules displays the following current inputs for configuration: F1, F2, F3, F4, F5, F6, F7, F8, L1, L2, L3, L4,
L5, L6, and L7.
5.4.1.2 Voltage terminals
SETTINGS  SYSTEM SETUP  AC INPUTS  VOLTAGE TERMINAL F1(S8)
 VOLTAGE
 TERMINAL F1
This menu configures the AC voltage inputs. Upon power up, the B90 recognizes all the AC modules loaded in its chassis
and populates the above menu accordingly.
The voltage terminals are denoted in the following format: Xa, where X = {F, L, S} and a = (5, 6, 7, 8}. X represents the chassis
slot containing the AC input module and a represents the AC channel of each module. For example, a B90 unit containing
the F8F and L8K modules displays the following voltage inputs: F5, F6, F7, F8, and L8.
The nominal
VT F1 SECONDARY
applied to the VT primary.

5.4.2 Power system

SETTINGS  SYSTEM SETUP  POWER SYSTEM
 POWER SYSTEM

B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
is set to "Programmed." This setting is "Not Programmed" by default. The
RELAY SETTINGS
CT F1 PRIMARY:

65000 A
CT F1 SECONDARY:

1 A
VT F1 SECONDARY:

66.4 V
VT F1 RATIO:

1.00 :1
setting is the voltage across the relay input terminals when nominal voltage is
NOMINAL FREQUENCY:

60 Hz
FREQUENCY AND PHASE

REFERENCE: F1
Range: 1 to 65000 A in steps of 1
Range: 1 A, 5 A
Range: 50.0 to 240.0 V in steps of 0.1
Range: 1.00 to 24000.00 :1 in steps of 1.00
Range: 25 to 60 Hz in steps of 1
Range: available CT and VT channels
SYSTEM SETUP
5
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