trip curve values for micrologic® trip units

Instruction Bulletin S1A1576900 (Rev01) 09/2009 Cedar Rapids, IA, USA Replaces S1A1576900 08/2009 Trip Curve Values for Micrologic ® Trip Units Basic, A, P and H Types Retain for future use. Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material. © 2009 Schneider Electric All Rights Reserved Schneider Electric 3700 Sixth St. SW Cedar Rapids, IA 52404 USA 1-888-SquareD (1-888-778-2733) www.schneider-electric.us Micrologic Trip Curve Values These values apply for Basic, A, P and H type Micrologic trip units, for all protections levels (2.0, 3.0, 5.0 and 6.0). Table 1: Micrologic Trip Unit Long-Time Delay Values Setting Long-Time Delay in Seconds 0.5 1 2 4 8 12 16 20 24 tr at 1.35 x Ir Minimum 11.94 23.89 47.77 95.54 191.09 286.64 382.19 477.74 573.28 Maximum 19.12 38.24 76.49 152.98 305.96 458.94 611.92 764.9 917.88 tr at 1.5 x Ir Minimum 8.66 17.32 34.64 69.27 138.55 207.82 277.1 346.37 415.65 Maximum 12.51 25.03 50.05 100.11 200.22 300.32 400.43 500.54 600.65 tr at 2 x Ir Minimum 4.15 8.29 16.59 33.17 66.35 99.52 132.69 165.87 199.04 Maximum 5.47 10.93 21.87 43.73 87.46 131.91 174.92 218.65 262.38 tr at 3 x Ir Minimum 1.68 3.36 6.72 13.44 26.89 40.33 53.78 67.22 80.67 Maximum 2.14 4.27 8.54 17.08 34.17 51.25 68.34 85.42 102.51 tr at 5 x Ir Minimum 0.58 1.16 2.32 4.64 9.28 13.92 18.56 23.2 27.84 Maximum 0.73 1.45 2.91 5.81 11.63 17.44 23.25 29.07 34.88 tr at 6 x Ir Minimum 0.4 0.8 1.6 3.2 6.4 9.6 12.8 16 19.2 Maximum 0.5 1 2 4 8 12 16 20 24 tr at 7.2 x Ir Minimum 0.35 0.55 1.11 2.21 4.42 6.63 8.85 11.06 13.27 Maximum 0.5 0.69 1.38 2.76 5.52 8.28 11.04 13.8 16.56 Table 2: Micrologic Trip Unit Short-Time Delay Values Setting Short-Time Delay 0 0.1 0.2 0.3 0.4 I 2 t off (Isd at 10 Ir) (seconds) 0 0.1 0.2 0.3 0.4 I 2 t on (Isd at 10 Ir) (seconds) — 0.1 0.2 0.3 0.4 tsd (min. trip) (milliseconds) 20 80 140 230 350 tsd (max. trip) (milliseconds) 80 140 200 320 500 Table 3: Micrologic Trip Unit Ground-Fault Delay Values Setting Ground-Fault Delay 0 0.1 0.2 0.3 0.4 I 2 t off (at 1 In) (seconds) 0 0.1 0.2 0.3 0.4 I 2 t on (at 1 In) (seconds) — 0.1 0.2 0.3 0.4 tsd (min. trip) (milliseconds) 20 80 140 230 350 tsd (max. trip) (milliseconds) 80 140 200 320 500

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Micro logic trip values

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Page 1: Trip Curve Values for Micrologic® Trip Units

Instruction BulletinS1A1576900 (Rev01)

09/2009Cedar Rapids, IA, USA

Replaces S1A1576900 08/2009

Trip Curve Values for Micrologic® Trip UnitsBasic, A, P and H Types

Retain for future use.

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.

Schneider Electric3700 Sixth St. SWCedar Rapids, IA 52404 USA1-888-SquareD (1-888-778-2733)www.schneider-electric.us

Micrologic Trip Curve Values These values apply for Basic, A, P and H type Micrologic trip units, for all protections levels (2.0, 3.0, 5.0 and 6.0).

Table 1: Micrologic Trip Unit Long-Time Delay Values

SettingLong-Time Delay in Seconds

0.5 1 2 4 8 12 16 20 24

tr at 1.35 x IrMinimum 11.94 23.89 47.77 95.54 191.09 286.64 382.19 477.74 573.28

Maximum 19.12 38.24 76.49 152.98 305.96 458.94 611.92 764.9 917.88

tr at 1.5 x IrMinimum 8.66 17.32 34.64 69.27 138.55 207.82 277.1 346.37 415.65

Maximum 12.51 25.03 50.05 100.11 200.22 300.32 400.43 500.54 600.65

tr at 2 x IrMinimum 4.15 8.29 16.59 33.17 66.35 99.52 132.69 165.87 199.04

Maximum 5.47 10.93 21.87 43.73 87.46 131.91 174.92 218.65 262.38

tr at 3 x IrMinimum 1.68 3.36 6.72 13.44 26.89 40.33 53.78 67.22 80.67