Toshiba GRL100-701B Instruction Manual page 430

= 500% of Zline
b. Setting condition of Z4G element
The operation zone of the Z4G element includes the operating zone of the Z3G element
remote terminal relay.
Element
Z1S
Z2S
Z3S
Z4S
Z1G
Z2G
Z3G
Z4G
PSBSZ
PSBGZ
2.7 Blinder setting
Zero sequence compensation is not applied to the blinder elements.
Recommended setting: 5.00 ohms
These elements should not operate under maximum load current:
Rset < load impedance/margin
< V rating/(2.5 times of I rating)
= (110V/ 3 )/(2.5 × 5A)
= 5.08
sequence current compensation) × 1.5(operating margin)
Actual impedance k factor
(ohms)
3.692
5.999
13.84
16.61
3.461
5.999
23.07
27.68
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Element Setting
5.00 Ω
BFRS
BFLS θ
120°
5.00 Ω
BRRS
BRLS Linked with BFRS
BFRG 5.00 Ω
BFLG θ
120°
5.00 Ω
BRRG
BRLG Linked with BRRG
 429 
Relay impedance
(ohms)
0.32
0.53
1.22
1.46
0.088 0.30
0.53
2.03
2.44
2.00
2.00
6 F 2 S 0 8 5 0