Siemens Siprotec 7UM611 User Manual

2.14 Impedance Protection (ANSI 21)
101
7UM61 Manual
C53000-G1176-C127-3
2.14.3 Settings
The table indicates region-specific presettings. Column C (configuration) indicates the
corresponding secondary nominal current of the current transformer.
2.14.4 Information List
Addr. Parameter C Setting Options Default Setting Comments
3301 IMPEDANCE PROT. OFF
ON
Block relay
OFF Impedance Protection
3302 IMP I> 1A 0.10 .. 20.00 A 1.35 A Fault Detection I> Pickup
5A 0.50 .. 100.00 A 6.75 A
3303 U< SEAL-IN ON
OFF
OFF State of Undervoltage
Seal-in
3304 U< 10.0 .. 125.0 V 80.0 V Undervoltage Seal-in
Pickup
3305 T-SEAL-IN 0.10 .. 60.00 sec 4.00 sec Duration of Undervoltage
Seal-in
3306 ZONE Z1 1A 0.05 .. 130.00 Ω 2.90 Ω Impedance Zone Z1
5A 0.01 .. 26.00 Ω 0.58 Ω
3307 T-Z1 0.00 .. 60.00 sec; ∞ 0.10 sec Impedance Zone Z1 Time
Delay
3308 ZONE Z1B 1A 0.05 .. 65.00 Ω 4.95 Ω Impedance Zone Z1B
5A 0.01 .. 13.00 Ω 0.99 Ω
3309 T-Z1B 0.00 .. 60.00 sec; ∞ 0.10 sec Impedance Zone Z1B
Time Delay
3310 ZONE Z2 1A 0.05 .. 65.00 Ω 4.15 Ω Impedanz Zone Z2
5A 0.01 .. 13.00 Ω 0.83 Ω
3311 ZONE2 T2 0.00 .. 60.00 sec; ∞ 0.50 sec Impedance Zone Z2 Time
Delay
3312 T END 0.00 .. 60.00 sec; ∞ 3.00 sec T END: Final Time Delay
No. Information Type of In-
formation
Comments
3953 >Imp. BLOCK EM >BLOCK impedance protection
3956 >Extens. Z1B EM >Zone 1B extension for impedance prot.
3958 >Useal-in BLK EM >Imp. prot. : BLOCK undervoltage seal-in
3961 Imp. OFF AM Impedance protection is switched OFF
3962 Imp. BLOCKED AM Impedance protection is BLOCKED
3963 Imp. ACTIVE AM Impedance protection is ACTIVE
3966 Imp. picked up AM Impedance protection picked up
3967 Imp. Fault L1 AM Imp.: Fault detection , phase L1
3968 Imp. Fault L2 AM Imp.: Fault detection , phase L2
3969 Imp. Fault L3 AM Imp.: Fault detection , phase L3
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Siemens Siprotec 7UM611 Specifications

General

Brand	Siemens
Model	Siprotec 7UM611
Category	Relays
Language	English