|
Understanding the standards for A600, P600, Q600 – they seem
to count for IEC, UL, CSA c22.2 /No14, Nema- but for some reason I cannot
understand what they are trying to say.
So the UL decided different after 301V volt – really?
Could someone not have the balls and say guys: “We are all
electrotechnical proffessionals -We are busy with this thing lets do it
right one time- agree on one standard”.
Oh I know they did each test independandtly came to the same
conclusions except for and after 300Vac and no-one from each side wanted to
question the other so they just let it be. Mmmm.
There is no +300Vac in the states Gary,
they use 220Vac 3phase.
|
| to UL 508,
CSA C 22.2-14 and
NEMA ICS 5 |
| A600 (600Vac),
A300(300Vac) and A150(150Vac) covers For Heavy duty @ current rating of
Ith = 10Amp |
| B600, B300, B150 covers
standard duty @ current rating Ith =5Amp |
| C600, C300, C150 covers
standard duty @ current rating Ith =2.5Amp |
| D300, D150 covers duty @
current rating Ith =1Amp |
| N600 (600Vdc),
N300(300Vdc) and N150(150Vdc) covers For Heavy duty @ current rating of
Ith = 10Amp |
| P600, P300, P150 covers
standard duty @ current rating Ith =5Amp |
| Q600, Q300, Q150 covers
standard duty @ current rating Ith =2.5Amp |
| R300, R150 covers duty @
current rating Ith =1Amp |
|
Utilisation category |
AC APPLICATION |
|
|
|
|
Adding postfix
|
A = Protection of
circuits, with no rated short-time withstand current
or
B = Protection of
circuits, with a rated short-time withstand current
|
|
Quick definitions |
* Plugging:- Stopping or
reversing the motor rapidly by reversing motor primary connections while
the motor is running.
* Inching (jogging):-
Energizing a motor once or repeatedly for short periods to obtain small
movements of the driven mechanism.
|
|
AC-1 |
Non-inductive or
slightly inductive loads, example: resistive furnaces,
heaters -
there is more to this! |
|
AC-2 |
Slip-ring motors:
starting, switching off |
|
AC-3 |
Squirrel-cage motors:
starting, switches off motors during running
- there is more to this |
|
AC-4 |
Squirrel-cage motors:
starting, plugging, inching
|
|
AC-5a |
Switching of discharge
lamps |
|
AC-5b |
Switching of incandescent
lamps |
|
AC-6a |
Switching of transformers |
|
AC-6b |
Switching of capacitor banks |
|
AC-7a |
Slightly inductive loads
in household appliances: examples: mixers, blenders |
|
AC-7b |
Motor-loads for household
appliances: examples: fans, central vacuum |
|
AC-8a |
Hermetic refrigerant
compressor motor control with manual resetting overloads |
|
AC-8b |
Hermetic refrigerant
compressor motor control with automatic resetting overloads |
|
AC-12 |
Control of resistive loads
and solid state loads with opto-coupler
isolation |
|
AC-13 |
Control of solid state
loads with transformer isolation |
|
AC-14 |
Control of small electromagnetic loads |
|
AC-15 |
Control of A.C. electromagnetic
loads |
|
AC20A, AC20B
|
Connecting and
disconnecting under no-load conditions |
|
AC21A, AC21B |
Switching of resistive
loads, including moderate overloads |
|
AC22A, AC22B |
Switching of mixed
resistive and inductive loads, including moderate overloads |
|
AC23A, AC23B |
Switching of motor loads
or other highly inductive loads |
|
AC31A, AC31B |
Non inductive and slightly
inductive loads |
|
AC33A, AC33B |
Motorloads or mixed loads
including motors, resistive loads and up to 30% incandescent lamp
loads |
|
AC35A, AC35B |
Electric discharge lamp
loads |
|
AC36A, AC36B |
Incandescent lamp loads |
|
AC40 |
Distribution circuits
comprising mixed resistive and reactive loads |
|
AC41 |
Non-inductive or slightly
inductive loads, resistance furnaces |
|
AC42 |
Slip-ring motors;
starting, switching off |
|
AC43 |
Squirrel-cage motors:
starting, switching off motors during running |
|
AC44 |
Squirrel-cage motors:
starting, plugging, inching |
|
AC45A |
Switching of electric
discharge lamp controls |
|
AC45B |
Switching of incandescent
lamps |
|
|
|
|
AC51 |
Non-inductive or slightly
inductive loads, resistance furnaces
|
|
AC52A |
Control of slip-ring motor
stators. 8h duty with on-load currents for start, acceleration, run |
|
AC52B |
Control of slip-ring motor
stators. Intermittent duty |
|
AC53A |
Control of squirrel cage
motors: 8Hours duty with on-load currents for start, acceleration, run
RA has marked this
for their softstarters WITHOUT by-pass contactors
RA has noted this to
be in the header for their co-ordination tables for their softstarters
|
|
AC53B |
Control of squirrel cage
motors: Intermittent duty
RA has marked this
for their softstarters with by-pass contactors |
|
AC55A |
Switching of electric
discharge lamp controls |
|
AC55B |
Switching of incandescent
lamps |
|
AC56A |
Switching of transformers |
|
AC56B |
Switching of capacitor
banks |
|
AC58A |
Control of hermetic
refrigerant compressor motors with automatic resetting of overload
releases : 8h duty with no-load currents for start, acceleration, run
|
|
AC58B |
Control of hermetic
refrigerant compressor motors with automatic resetting of overload
releases : Intermittent duty |
|
AC140 |
|
|
|
|
|
|
DC APPLICATIONS: |
|
DC-1 |
Non Inductive or slightly
inductive loads, resistance furnaces, heaters |
|
DC-3 |
Shunt-motors, starting,
plugging, inching, dynamic braking of motors |
|
DC-5 |
Series-motors, starting,
plugging, inching, dynamic braking of motors |
|
DC-6 |
Switching of incandescent
lamps |
|
DC-12 |
Control of resistive loads
and solid state loads with opto-coupler isolation |
|
DC-13 |
Control of D.C. electromagnetics |
|
DC-14 |
Control of D.C.
electromagnetic loads having economy resistors in the circuit |
|
DC-20 |
Connecting and
disconnecting under no-load conditions |
|
DC-21 |
Switching of resistive
loads, including moderate overloads |
|
DC-22 |
Switching of mixed
resistive and inductive loads, including moderate overloads (i.e. shunt
motors) |
|
DC-23 |
Switching of highly
inductive loads (i.e. series motors) |
|
|
|
|
DC31 |
Resistive loads |
|
DC33 |
Motor loads or mixed loads
including motors |
|
|
|
|
DC36 |
Incandescent lamp loads |
|
DC40 |
Distribution circuits
comprising mixed resistive and
reactive loads having a
resultant inductive reactance |
|
DC41 |
Non-inductive or slightly
inductive loads, resistance
furnaces |
|
DC43 |
Shunt-motors: starting,
plugging, inching. Dynamic breaking of d.c. motors |
|
DC45 |
Series-motors: starting,
plugging1), inching2). Dynamic breaking of d.c. motors |
|
DC46 |
Switching of incandescent
lamps |
