Transcript Short Circuit

UL489 compared to IEC60898
Jonathan Potter
GE Energy Management
Industrial Solutions
Imagination at work
Residential breaker performance
UL 489 and IEC60898
Define construction and product performance requirements
Include spacing and mechanical strength requirements
Define Endurance, Overload, Short Circuit, Heat Rise requirements
GE Industrial Solutions | November 2014
2
UL 489 compared to IEC 60898
Item
1
2
3
4
5
Description
Minimum Rating
Maximum Rating
Maximum Selling SKU
Rated Voltage
Short Circuit Capacity
6 Module width
7 Terminal Capacity
8 Ambient Temperature
Testing Details
1 No. of Sequences
2 Thermal Calibration
3
4
5
6
7
NEMA MCB (UL - 489)
10A / 15A
Not really limited
20A & 30A
120/240V (This voltage diff drives major construction diff)
10kA & 22kA, depending on Voltage
Some Versions (Model - 218) - 65kA upto 30A, AFCI higher also
1 inch (25.4mm), 1/2 inch (12.7mm)
Depends on amperage
25 deg / 40 deg
SSA 1349/1998 (Similar to IEC60898)
0.5A
Not really limited
16A
220/380V (This voltage diff drives major construction diff)
G60 - 6kA, G100 - 10kA
4 (X, Y, Z, Hi IC)
at 200% & 135% of rated current
200% Current at any Voltage
Rated Current 0 - 30A : should trip within 2 minutes
31 - 50A - should trip within 4 minutes
51 - 100A - should trip within 6 minutes
135% Current at any Voltage
Current 50A or less: should trip within 1 hour
Current more than 50A: should trip within 2 hours
5 (A, B, C, D, E)
at 113% hold, 145% & 255% of rated current
18mm
25 - 35mm2
30 deg
255% Current at any Voltage
Rated Current 0.5 - 32A: should trip within 1 minute
Above 32A trip within 2 minutes
145% Current at any Voltage
Upto 63A: should trip with in 1 hour
113% Current at any Voltage
Upto 63A: Should not trip within 1 hour
3In, 5In & 10In, depending on B, C & D characteristics
Instantaneous/Magnetic Tripping
10 times the rated current; Tripping time must comply with time current curve
100ms is the limit for trip time
6 times In (but not less than 150A) at Rated Voltage
Icn 10In or 500A whichever is higher (Tripping through
Overload
35 Manual Open & Close Operation
Magnetic) at Rated Voltage
15 Close Manual & Open Automatically
6 O & 3 CO operations
Endurance
6000 (with Current) + 4000 (without Current)
4000 (with Current)
Short Circuit
10kA/22kA/65kA (O-CO) at Rated Voltage
Icn (Rated) per manufacturer
5kA in Z-seq (O-CO-CO) at Rated Voltage
Ics 6kA-10kA
Temperature Rise
After Overload test
On fresh samples
Terminals 50°
60°
Handle 35°
40°
Case & Cover
60°
GE Industrial Solutions | November 2014
3
Compare and contrast performance
requirements
Similarities
Differences
Must Trip
Heat Rise
135% - 145%
After Overload – Clean Product
200% - 255%
Must not Trip
50 deg C – 60 deg C (80C for
947-2)
110% - 113%
Endurance
Short Circuit
10,000 cycles – 4,000 cycles
High available faults
GE Industrial Solutions | November 2014
4
NEMA and IEC panel comparison
GE Industrial Solutions | November 2014
5
NEMA compared to IEC residential breaker
NEMA
• Plug-in style works as a
system with load center
• Typical ratings 120/240V up
to 22kA
• Available in 240V plug-in
versions
• Meets UL489 MCCB
requirements
IEC
• Lug/Lug style works on a
DIN rail load center
• Typical ratings 220/380V up
to 6kA
• Meets IEC 60898 and/or
IEC 60947-2
GE Industrial Solutions | November 2014
6
UL 489 test sequences
X Sequence – Overload
Verify 135% trip
Verify 200% trip
6 * In 50 cycles
Heat Rise 50° C limit
Dielectric
GE Industrial Solutions | November 2014
7
UL 489 test sequences
Y Sequence – Endurance
Verify 200% trip
1 * In 6000 cycles
No load 4000 cycles
Verify 135% trip
Verify 200% trip
Low level short circuit 1.5kA
Verify 200% trip
Dielectric
GE Industrial Solutions | November 2014
8
UL 489 test sequences
Z Sequence – Short Circuit
Verify 200% trip
5kA short circuit O-com CO-com O-Com
Verify 200% trip
Dielectric
GE Industrial Solutions | November 2014
9
UL 489 test sequences
Per Manufacturer
High Available Fault – Short Circuit
Verify 200% trip
5kA short circuit O-com CO-com
Verify 250% trip
Dielectric (900v)
GE Industrial Solutions | November 2014
10
IEC panel
IEC panel
IEC panel
IEC panel
IEC panel
IEC panel
NEMA panel
NEMA panel
NEMA panel
NEMA panel
NEMA panel
NEMA panel
NEMA panel
NEMA panel