Motor Switching And Protection 4eep
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MOTOR SWITCHING AND PROTECTION IEC 947-4
ABB SACE
1
MOTOR DATA • P = Rated motor power (kW) • V = Supply voltage (V) • cos ϕ = Power factor ∀ η = efficency P In = ------------------------ = rated current V x 1.73 x cos ϕ x η ABB SACE
2
MOTOR CURRENTS • In = Rated nominal current • Ia = Rated starting current (8-10 x In) • Ip = Maximum peak inrush current (13 - 15 x In) ABB SACE
3
MOTOR STARTING CURRENT t (s)
In
Ia
Ip ABB SACE
I (A)
4
MOTOR PROTECTION 2
1
ABB SACE
3
5
TIME - STARTING CURVES • 1 MOTOR START UP • 2 OVERLOAD PROTECTION (THERMAL) • 3 SHORT CIRCUIT PROTECTION (MAGNETIC) ABB SACE
6
DIAGRAM A 1 CIRCUIT BREAKER WITH MAGNETIC RELEASE (Short circuit protecting device)
2 OR (Switching device) 3 THERMAL OVERLOAD RELEASE (Overload protection) M ABB SACE
7
DIAGRAM B 1 CIRCUIT BREAKER WITH ELECTRONIC RELEASE (Short circuit and overload protecting device)
2 OR (Switching device) M ABB SACE
8
DIAGRAM C 1 CIRCUIT BREAKER WITH ELECTRONIC RELEASE (Short circuit and overload protecting device and switching device)
M
ABB SACE
9
DIAGRAM A • High number of motor switcing • TOR on or • Most common application up to now
ABB SACE
10
DIAGRAM B • High number of motor switching • No TOR on or • PR212/MP electronic release • New and future application
ABB SACE
11
DIAGRAM C • No or and TOR • Low number of motor switching • ACB with electronic release • Typical application for big motor sizes (Power > 250 kW/400 V)
ABB SACE
12
PR 222MP I: istantaneous adjustable short circuit I3=6-7-8-9-10-11-12-13 x In
L
t
L: Inverse long delay overload
Class
I1=0.4-1 x In step 0.01 x In R: Locked rotor protection I5=3-4-5-6-7-8-10 x In t 5=1-4-7-10 sec.
R
U t5 4 sec
U: Phase loss/unbalance
I
OFF or ON: 4 sec. Tripping time @ one phase current 0.4 times I1 ABB SACE
0.4 x In
I1
I5
I
I3
13
PR 222MP Protection LLProtection againstoverload overload against
CLASS CLASS starting startingclass class according accordingto toIEC IEC 947947-44
ABB SACE
RRProtection Protection against againstlocked lockedrotor rotor
Protection UUProtection againstphase phase against loss/unbalance loss/unbalance Protection I IProtection againstshort shortcircuit circuit against 14
TRIPPING CLASS
ripping class from 10 A to 30 defines the time-curre urves of the thermal overload release during startin nd on duty service (overload and phase loss)
10 A - 10 - 20 - 30 ABB SACE
15
TRIPPING CLASS 10 - 10 A (Normal starting) Pump Compressor
10-20 30
(Normal starting) Ventilator
(Heavy duty) Mill
ABB SACE
16
SHORT CIRCUIT TEST
Motor protection
Duty cicle:
O - CO at “Iq” current
O : tripping of the circuit under short circuit condition breaker CO : Closing by or under short circuit condition and tripping of the breaker 17
COORDINATION TYPE Type 1 Damage to the or and/or thermal overload is acceptable as two condition are release - there is no risk to the fulfilled: - no device other than ors and/or overload operator; release can be replaced.
ABB SACE
18
COORDINATION TYPE Type 2
The only risk permitted is light welding of the i,e. the or can easily be separated either by electrical control or using a screwdriver.
After the coordination test: all the protection device functions must still be operational; the manufacturer must prove that the or is st operational for further service. ABB SACE
19
COORDINATION COMPARISON Type 1 - Lower investment cost - Expansive maintenance - Maintenance stop plant
ABB SACE
20
COORDINATION COMPARISON Type 2 - Higher investment cost - Cheaper -maintenance Continuity of service ABB SACE
21
STAR-DELTA STARTING
K1
K2
K3
M
ABB SACE
22
COORDINATION TABLE SELECTION CHART 1 Coordination type “1” or “2” 2 Starter Direct or Star-Delta Normal or Heavy duty 3 Starting type 4 Voltage level and short circuit current “Iq” MOTOR CIRCUIT POWER BREAKER (kW) Only magnetic or With PR222MP ABB SACE
O R Name
TOR
Name (N.A. for 222MP)
23
ABB SACE
24
500 V 50 kA type “2” star delta Motor Rated Rated Output Current Pe
Ie
[kW] 75 90 110 132 160 200 250 290 315
[A] 110 132 158 192 230 279 335 394 440
ABB SACE
MCCB Type
T4H250 MA125 T4H250 MA160 T4H250 MA200 T4H250 PR221-I In250 T4H320 PR221-I In320 T5H400 PR221-I In400 T5H630 PR221-I In630 T5H630 PR221-I In630 T5H630 PR221-I In630
or Line
Delta
Star
A95 A110 A110 A145 A145 A210 A210 A260 A300
A95 A110 A110 A145 A145 A210 A210 A260 A300
A50 A75 A95 A95 A110 A145 A185 A210 A210
O/L relay Type
TA80DU80 TA110DU90 TA110DU110 E200DU200 E200DU200 E320DU320 E320DU320 E320DU320 E320DU320
25
COORDINATION TABLES
ABB SACE
26
ACB MOTOR CORDINATION TABLE D.O.L. STARTING Power (kW)
In (A)
Op. Nr. ACB (AC3) (Type)
Icu (kA)
Release Type (A)
CT (A)
Up to 450
800
10000
E1B
40
1250
PR112
1250
Up to 630
1140
12000
E2N
65
1600
PR112
1600
Up to 630
1140
12000
ES3
75
1600
PR112
1600
Up to 630
1140
12000
E3H
100
1600
PR112
1600
ABB SACE
27
Rated uninterrupted current, Iu Rated service current, In Poles Rated service voltage, Ue (AC) 50-60Hz Rated impulse withstand voltage, Uimp Rated insulation voltage, Ui Test voltage at industrial frequency 1 min.
[A]
[V] [kV] [V] [V]
T2
T3
T4
T5
160 1…100 3 690 8 800 3000
250 100…200 3 690 8 800 3000
250 80…250 3 690 8 1000 3500
400 320, 400 3 690 8 1000 3500
Rated ultimate short-circuit breaking capacity Icu AC 50-60 Hz 380/415 V [kA]
N 36
S 50
H 70
L 85
N 36
S 50
N 36
S 50
H 70
L V 120 200
N 36
S 50
H 70
L V 120 200
Rated service short-circuit breaking capacity Ics AC 50-60 Hz 380/415 V [kA]
36
50
70
70
27
27
36
50
70
120 200
36
50
70
120 200
154
187
75,6
105
Rated service short-circuit breaking capacity Icm AC 50-60 Hz 380/415 V [kA]
Isolation behaviour Reference Standards Protection against short-circuit Magnetic only release MA Electronic release PR221DS-I Integrated protection Electronic release Mechanical life Electrical life @ 415 V AC Fixed dimensions W 3p D H
ABB SACE
(1) MF up to In=12,5A
75,6 105
75,6 105 154 264 440
75,6 105 154 264 440
IEC 60947-2
IEC 60947-2
IEC 60947-2 IEC 60947-4-1(with PR222MP)
IEC 60947-2 IEC 60947-4-1(with PR222MP)
(1)
PR222MP 25000 8000
25000 8000
20000 10000
20000 7000
90 70 130
105 70 150
105 103,5 205
140 103,5 205
28
ACB with microprocessor based motor protection release PR 112/113 EMAX E1-E2-E3 B-N-S-H 800 -1250 - 1600 A 40 - 65 - 75 - 100 kA @ 400 V Release range: From R800 A to R1600 A ABB SACE
29
AND NOW… MOTOR IS READY TO START !
ABB SACE
30
ABB SACE
1
MOTOR DATA • P = Rated motor power (kW) • V = Supply voltage (V) • cos ϕ = Power factor ∀ η = efficency P In = ------------------------ = rated current V x 1.73 x cos ϕ x η ABB SACE
2
MOTOR CURRENTS • In = Rated nominal current • Ia = Rated starting current (8-10 x In) • Ip = Maximum peak inrush current (13 - 15 x In) ABB SACE
3
MOTOR STARTING CURRENT t (s)
In
Ia
Ip ABB SACE
I (A)
4
MOTOR PROTECTION 2
1
ABB SACE
3
5
TIME - STARTING CURVES • 1 MOTOR START UP • 2 OVERLOAD PROTECTION (THERMAL) • 3 SHORT CIRCUIT PROTECTION (MAGNETIC) ABB SACE
6
DIAGRAM A 1 CIRCUIT BREAKER WITH MAGNETIC RELEASE (Short circuit protecting device)
2 OR (Switching device) 3 THERMAL OVERLOAD RELEASE (Overload protection) M ABB SACE
7
DIAGRAM B 1 CIRCUIT BREAKER WITH ELECTRONIC RELEASE (Short circuit and overload protecting device)
2 OR (Switching device) M ABB SACE
8
DIAGRAM C 1 CIRCUIT BREAKER WITH ELECTRONIC RELEASE (Short circuit and overload protecting device and switching device)
M
ABB SACE
9
DIAGRAM A • High number of motor switcing • TOR on or • Most common application up to now
ABB SACE
10
DIAGRAM B • High number of motor switching • No TOR on or • PR212/MP electronic release • New and future application
ABB SACE
11
DIAGRAM C • No or and TOR • Low number of motor switching • ACB with electronic release • Typical application for big motor sizes (Power > 250 kW/400 V)
ABB SACE
12
PR 222MP I: istantaneous adjustable short circuit I3=6-7-8-9-10-11-12-13 x In
L
t
L: Inverse long delay overload
Class
I1=0.4-1 x In step 0.01 x In R: Locked rotor protection I5=3-4-5-6-7-8-10 x In t 5=1-4-7-10 sec.
R
U t5 4 sec
U: Phase loss/unbalance
I
OFF or ON: 4 sec. Tripping time @ one phase current 0.4 times I1 ABB SACE
0.4 x In
I1
I5
I
I3
13
PR 222MP Protection LLProtection againstoverload overload against
CLASS CLASS starting startingclass class according accordingto toIEC IEC 947947-44
ABB SACE
RRProtection Protection against againstlocked lockedrotor rotor
Protection UUProtection againstphase phase against loss/unbalance loss/unbalance Protection I IProtection againstshort shortcircuit circuit against 14
TRIPPING CLASS
ripping class from 10 A to 30 defines the time-curre urves of the thermal overload release during startin nd on duty service (overload and phase loss)
10 A - 10 - 20 - 30 ABB SACE
15
TRIPPING CLASS 10 - 10 A (Normal starting) Pump Compressor
10-20 30
(Normal starting) Ventilator
(Heavy duty) Mill
ABB SACE
16
SHORT CIRCUIT TEST
Motor protection
Duty cicle:
O - CO at “Iq” current
O : tripping of the circuit under short circuit condition breaker CO : Closing by or under short circuit condition and tripping of the breaker 17
COORDINATION TYPE Type 1 Damage to the or and/or thermal overload is acceptable as two condition are release - there is no risk to the fulfilled: - no device other than ors and/or overload operator; release can be replaced.
ABB SACE
18
COORDINATION TYPE Type 2
The only risk permitted is light welding of the i,e. the or can easily be separated either by electrical control or using a screwdriver.
After the coordination test: all the protection device functions must still be operational; the manufacturer must prove that the or is st operational for further service. ABB SACE
19
COORDINATION COMPARISON Type 1 - Lower investment cost - Expansive maintenance - Maintenance stop plant
ABB SACE
20
COORDINATION COMPARISON Type 2 - Higher investment cost - Cheaper -maintenance Continuity of service ABB SACE
21
STAR-DELTA STARTING
K1
K2
K3
M
ABB SACE
22
COORDINATION TABLE SELECTION CHART 1 Coordination type “1” or “2” 2 Starter Direct or Star-Delta Normal or Heavy duty 3 Starting type 4 Voltage level and short circuit current “Iq” MOTOR CIRCUIT POWER BREAKER (kW) Only magnetic or With PR222MP ABB SACE
O R Name
TOR
Name (N.A. for 222MP)
23
ABB SACE
24
500 V 50 kA type “2” star delta Motor Rated Rated Output Current Pe
Ie
[kW] 75 90 110 132 160 200 250 290 315
[A] 110 132 158 192 230 279 335 394 440
ABB SACE
MCCB Type
T4H250 MA125 T4H250 MA160 T4H250 MA200 T4H250 PR221-I In250 T4H320 PR221-I In320 T5H400 PR221-I In400 T5H630 PR221-I In630 T5H630 PR221-I In630 T5H630 PR221-I In630
or Line
Delta
Star
A95 A110 A110 A145 A145 A210 A210 A260 A300
A95 A110 A110 A145 A145 A210 A210 A260 A300
A50 A75 A95 A95 A110 A145 A185 A210 A210
O/L relay Type
TA80DU80 TA110DU90 TA110DU110 E200DU200 E200DU200 E320DU320 E320DU320 E320DU320 E320DU320
25
COORDINATION TABLES
ABB SACE
26
ACB MOTOR CORDINATION TABLE D.O.L. STARTING Power (kW)
In (A)
Op. Nr. ACB (AC3) (Type)
Icu (kA)
Release Type (A)
CT (A)
Up to 450
800
10000
E1B
40
1250
PR112
1250
Up to 630
1140
12000
E2N
65
1600
PR112
1600
Up to 630
1140
12000
ES3
75
1600
PR112
1600
Up to 630
1140
12000
E3H
100
1600
PR112
1600
ABB SACE
27
Rated uninterrupted current, Iu Rated service current, In Poles Rated service voltage, Ue (AC) 50-60Hz Rated impulse withstand voltage, Uimp Rated insulation voltage, Ui Test voltage at industrial frequency 1 min.
[A]
[V] [kV] [V] [V]
T2
T3
T4
T5
160 1…100 3 690 8 800 3000
250 100…200 3 690 8 800 3000
250 80…250 3 690 8 1000 3500
400 320, 400 3 690 8 1000 3500
Rated ultimate short-circuit breaking capacity Icu AC 50-60 Hz 380/415 V [kA]
N 36
S 50
H 70
L 85
N 36
S 50
N 36
S 50
H 70
L V 120 200
N 36
S 50
H 70
L V 120 200
Rated service short-circuit breaking capacity Ics AC 50-60 Hz 380/415 V [kA]
36
50
70
70
27
27
36
50
70
120 200
36
50
70
120 200
154
187
75,6
105
Rated service short-circuit breaking capacity Icm AC 50-60 Hz 380/415 V [kA]
Isolation behaviour Reference Standards Protection against short-circuit Magnetic only release MA Electronic release PR221DS-I Integrated protection Electronic release Mechanical life Electrical life @ 415 V AC Fixed dimensions W 3p D H
ABB SACE
(1) MF up to In=12,5A
75,6 105
75,6 105 154 264 440
75,6 105 154 264 440
IEC 60947-2
IEC 60947-2
IEC 60947-2 IEC 60947-4-1(with PR222MP)
IEC 60947-2 IEC 60947-4-1(with PR222MP)
(1)
PR222MP 25000 8000
25000 8000
20000 10000
20000 7000
90 70 130
105 70 150
105 103,5 205
140 103,5 205
28
ACB with microprocessor based motor protection release PR 112/113 EMAX E1-E2-E3 B-N-S-H 800 -1250 - 1600 A 40 - 65 - 75 - 100 kA @ 400 V Release range: From R800 A to R1600 A ABB SACE
29
AND NOW… MOTOR IS READY TO START !
ABB SACE
30
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