Page 87 - SACE Tmax XT - Catalogue

PROTECTION TRIP UNITS 3/53

03

ABB Code ANSI Code Function Threshold Range Threshold Step Trip Time Time Step Excludability Excludability trip Pre-Allarm Curve
Protections
S2(V) 51V 2nd Voltage controlled overcurrent I21 = 0.6...10 x In 0.1 x In t21 = 0.05…30 s 0.01 s yes yes no t = k
Step mode (controlled mode) Ul2 = 0.2…1 x Un 0.01 x Un
Ks2 = 0.1…1 0.01
51V Linear mode (restrained mode) Ul2 = 0.2…1 x Un 0.01 x Un
Uh2 = 0.2…1 x Un 0.01 x Un
Ks2 = 0.1…1 0.01
RV 59N Residual overvoltage U22 = 0.05….0.5 x Un 0.001 x Un t22 = 0.5…120 s 0.01 s yes yes no t = k
UF 81L Underfrequency f12 = 0.9….0.999 fn 0.001 x fn t12 = 0.15…300 s 0.01 s yes yes no t = k
OF 81H Overfrequency f13 = 1.001….1.1 fn 0.001 x fn t13 = 0.15…300 s 0.01 s yes yes no t = k
UF2 81L 2nd Underfrequency f17 = 0.9….0.999 fn 0.001 x fn t17 = 0.15…300 s 0.01 s yes yes no t = k
OF2 81H 2nd Overfrequency f18 = 1.001….1.1 fn 0.001 x fn t18 = 0.15…300 s 0.01 s yes yes no t = k
RP 32R Reverse active power P11 = -1…-0.05 Sn 0.001 Sn t11 = 0.5…100 s 0.1 s yes yes no t = k
Cos ϕ 78 Power factor Cos φ = 0.5…0.95 0.01 yes only signaling no
D 67 Directional overcurrent I7 Fw/Bw = 0.6...10 x In 0.1 x In t7 Fw/Bw = 0.2...0.8 s 0.01 s yes yes no t = k
68 Zone selectivity t7sel = 0.13…0.5s 0.01 s yes
Start up Activation: 0.6…10 x In 0.1 x In Range 0.1…0.8s 0.01 s yes
Minimum angle of direction (°) 3.6, 7.2, 10.8, 14.5, 18.2, 22,
25.9, 30, 34.2, 38.7, 43.4, 48.6,
54.3, 61, 69.6
RQ 40/32R Loss of field or reverse reactive power Q24 = -1…-0.1 x Sn 0.001 x Sn t24 = 0.5…100 s 0.1 s yes yes no t = k
Kq = -2…2 0.01
Loss of field or reverse reactive power Q25 = -1…-0.1 x Sn 0.001 x Sn t24 = 0.5…100 s 0.1 s yes yes no t = k
Kq = -2…2 0.01
Minimum voltage threshold Vmin. = 0.5…1.2 0.01 yes
OQ 320F Reactive overpower Q27 = 0.4…2 x Sn 0.001 x Sn t27 = 0.5…100 s 0.5 s yes yes no t = k
OP 320F Active overpower P26 = 0.4…2 x Sn 0.001 x Sn t26 = 0.5…100 s 0.5 s yes yes no t = k
UP 32LF Active underpower P23 = 0.1...1 x Sn 0.001 x Sn t23 = 0.5…100 s 0.5 s yes yes no t = k
StartUp Range from closing: 0.1…30S or with digital 0.01 s yes -
input
ROCOF 81R Rate of change of frequency f28 = 0.4…10 Hz / s (up &/or down) 0.2 Hz/s t28 = 0.5...10 s for f>f28 0.01 s yes yes no t = k
L (Motor 49 Motor protection overload I1 = 0.4…1 x In 0.001 x In XT2-XT4: 5E - 10E - 20E t = k/I 2
Protection) According 60947-4-1 XT5-XT7: 5E - 10E - 20E - 30E
R 51R Rotor blockage - Jam Ij = 2…10 x I1 0.1 tj = 1…10 s 0.5 s t = k
51R Rotor blockage - Stall Is = 1…10 x I1 0.1 ts = 2…10 s 0.5 s t = k
U Phase lackand/or unbalance On/Off - tu = 1…10 s 0.5 s t = k
Uc 37 Undercurrent 50…90% x I1 10% tuc = 1…20 s 0.5 s t = k
Protection with additional modules
SC 25 Synchrocheck Ulive = 0.5…1.1 x Un 0.001 x Un Stability voltage time 0.001 s yes only signaling no
Synchrocheck (Live busbars) ΔU = 0.02…0.12 x Un 0.001 x Un for live state = 100…30000ms 0.01 s
Δf = 0.1…1 x Hz 0.1 x Hz Minimum matching time =
Δ� 5…50° elt 5° elt 100…3000ms
Synchrocheck Ulive = 0.5…1.1 x Un 0.001 x Un tref = 0.1…30 s 0.1 s yes only signaling no
(Live. Dead busbars) Udead = 0.02…0.2 x Un 0.001 x Un
Frequency check off yes
Phase check off yes
Dead bar configuration Reverse/Standard yes
Primary voltage 100…1150 100, 115, 120, 190, 208,
220, 230, 240, 277, 347,
380, 400, 415, 440, 480,
500, 550, 600, 660, 690,
910, 950, 1000, 1150
Secondary voltage 100…120 100, 110, 115, 120
Gext 50G TD Earth fault I41 = 0.1…1 x In toroid 0.001 x In toroid t4 = 0.1…1 s 0.05 s yes yes 50…90% I41 step 1% t = k
(1)
68 Zone selectivity t41sel = 0.04…0.2 s 0.01 s yes
Start up Activation: 0.1…1 x In 0.02 x In Range: 0.1…30s 0.01 s yes
(1)
51G Earth fault I41 = 0.1…1 x In 0.001 x In t4 = 0.1…1 s with I = 4 x In 0.05 s yes yes 50…90% I41 step 1% t = k/I 2
MDGF (2) Earth fault I41 = 0.1...1 x In toroid 0.001 x In toroid t41 = 0.05…0.4 s 0.05 s yes yes 50...90% I41 step 1% t = k
Max setting 1200A
Earth fault I41 = 0.1...1 x In 0.001 x In t41 = 0.1…0.4 s 0.05 s yes yes 50...90% I41 step 1% t = k/I 2
Rc 64 50N TD 87N Residual current / Differential ground fault IΔn = 3 - 5 - 7 - 10 – 20 – 30A tΔn = 0.06 – 0.1 – 0.2 – 0.3 – 0.4 – 0.5 – 0.8 s no no t = k
All the protection functions can be excluded if needed except for L. I. MCR. The RC for the XT7 is active only when the rating plug is present. All of the Synchrocheck functions are for signaling.
An adjustable pre-alarm threshold (50...90% l1) is available for L protection, as well as a fixed pre-alarm threshold is available for G and Gext protection.
(1) With Vaux all thresholds are available. Without Vaux there are minimum threshold limitations. Details available on the "User manual for use and maintenance of Ekip Touch Trip units"
(2) Available for XT7 only.