Toshiba GRL100-701B Instruction Manual page 83

Setting
The settings necessary for the directional earth fault protection are as follows:
Element Range
DEFF
DEFFI 0.5 - 5.0 A
(0.10 - 1.00 A
DEFFV 1.7 – 21.0 V
TDEF 0.0 – 10.0 s
DEFR
DEFRI 0.5 - 5.0 A
(0.10 - 1.00 A
DEFRV 1.7 – 21.0 V
TDER 0.0 – 10.0 s
DEF θ 0 - 90°
DEFFEN OFF/ON
DEFREN OFF/ON
EFIBT OFF/NOD/F/R
(*) Current values shown in the parentheses are in the case of 1 A rating. Other current values are in
the case of 5 A rating.
The DEF element is shared with the command protection.
The EFIBT is the scheme switch for directional control selection and if NOD is selected, the
inverse time overcurrent protection executes non-directional operation. If F or R is selected, it
executes forward operation or reverse operation in combination with the DEFF or DEFR. If OFF
is selected, the inverse time overcurrent protection is blocked.
Step Default Remarks
Forward looking DEF
0.1 A 1.0 A Residual current
0.01 A 0.2 A) (*)
0.1 V 2.0 V Residual voltage
0.1 s 0.0 s Definite time setting
Reverse looking DEF
0.1 A 1.0 A Residual current
0.01 A 0.2 A) (*)
0.1 V 2.0 V Residual voltage
0.1 s 0.0 s Definite time setting
1° 85° Characteristic angle
OFF Forward DEF backup trip enable
OFF Reverse DEF backup trip enable
NOD EFI directional control
 82 
6 F 2 S 0 8 5 0