Schneider Electric FBZ2, iFBZ, EOCR-i3BZ, 3BZ2 Setting sequence and menu, Parameter Description

EOCR-i3BZ/iFBZ/3BZ2/FBZ2

EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,

EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT

Setting sequence and menu

No.	Menu	Parameter	Description	Default
			Use password other than zero for secured configuration. This feature enables
1	Password		limitation of setting modification by unauthorized person. Zero value is used for
			disabling password checking.
			“Ph:3Ph” mode for a 3 phase load, “Ph:1Ph” mode for a 1 phase load should be
2	Selection of Phase		selected. If you select the “Ph:1Ph”, RP, PL and Ub functions will be disabled
			and not displayed in the menu mode
			Time-Current Characteristic(TCC) setting. “dE” is for Definite TCC, “In” is for
3	TCC Selection		Inverse TCC, “th” is for thermal inverse TCC. Refer to the time-current
			characteristic curve . If tcc=no, only overcurrent protection is disabled.
4	Frequency		Select 50 or 60 based on the system fundamental frequency.
5	Fail Safe		Selection of Fail Safe(No volt release) operation for overload trip output,
			OL. Refer to Fail-Safe Operation
6	Reversed Phase		Enable or disable reverse phase detection
	detection
7	Over Current Threshold		Threshold for Over Current protection which cannot be set below the
			under current threshold(uc).
			Motor Starting delay, OC, UC, Stall, Jam, Ub are blocked during starting but PL,
8	Start Delay Time		RP, and thermal inverse are not blocked. For “In” TCC mode, the cold curve is
			applied during before dt is activated and the hot curve is applied after the dt
			expired.
			the fault duration of definite overcurrent protection.
9	Over Current Duration		the trip class for inverse overcurrent protection(refer to TCC curve)
			the class for thermal overload protection based on the thermal
			image by load current (refer to TCC curve).
10	Under Current		Threshold for Under Current protection. The setting should be higher than
	Threshold		no-load current of a motor. The current value cannot be set higher than OC.
11	Under Current		Fault duration for the Under Current Operation. If the setting of “oFF” in the “uc”
	Duration		mode is selected, this menu is not displayed
	Earth Fault		Threshold for Earth Fault protection. The capacitance leakage current of the
12	(Ground Fault)		motor and cable should be taken into account for the setting.
	Threshold		The threshold value corresponds to the primary current of ZCT.
13	Earth Fault Duration		Earth Fault duration
			TCC is always a definite characteristic for earth fault detection.
14	EF starting Delay		Blocking time of Earth Fault detection during motor starting.
			oFF, 1~30s adjustable This timer is only active during motor starting.
15	Phase Loss		Enable or disable Phase Loss(Single Phasing) detection. If the “Ph:1Ph” is
			selected , this menu is not displayed.
16	Phase Loss Time		Fault duration for Phase Loss Operation . The setting range is 0.5~5 sec.
			if “PL:oFF” is selected, this menu is not displayed
			Threshold for Current Unbalance operation. To disable the function, set to
17	Unbalance Threshold		“oFF”, The setting range is 10~50%.
			Unbalance factor (%) = (max phase-min phase) / Imax phase ×100%
18	Unbalance fault		Unbalance fault duration for Current Unbalance operation.
	duration		The setting range is 1~10 seconds.
			Threshold for locked rotor detection during motor starting. The value is the
			multiples of the over current threshold(oc).
19	Stall threshold		If the locked rotor condition is detected, the trip relay operates in 0.5s after
			the “dt” expires.
			If dt=0, this function is disabled and not displayed in the menu.
20	Jam threshold		Threshold for locked rotor detection during motor running. The value is the
			multiples of the over current threshold (oc)
21	Jam fault duration		Jam Fault duration

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