Megger SPI500 handleiding
Handleiding
Je bekijkt pagina 8 van 46
7
1.2.2.2.1 Long-Time Delay
The long-time delay characteristic is normally associated with direct acting low voltage power circuit
breakers providing overload protection with typical time delays of approximately 10 -60 seconds at
300% of pickup.
1.2.2.2.2 Short-Time Delay
The short-time delay characteristic is normally associated with direct acting low voltage power circuit
breakers providing protection for short circuit or fault conditions. It is used whenever a small delay is
necessary for coordination or selectivity with other protective devices. Typical delays of this type
characteristic are approximately 6-30 cycles.
1.2.2.3 Instantaneous
A numerical value associated with a tap setting of the instantaneous element of the device under test.
It is used to define a pickup value, or minimum operating point, of the instantaneous element of the
device under test. The instantaneous trip characteristic is used for short circuit or fault protection and
has no intentional time delay.
1.2.2.4 Test Multiple
A numerical value normally associated with conducting timing tests. Multiples are normally
expressed in terms of whole numbers like 2, 3, 4, etc., times the Device under test Pickup, or Tap,
value of the device under test. Fractions of test multiples may also be entered, and the appropriate
test values and theoretical trip times will automatically be calculated.
1.2.2.5 Frame Size
The frame rating is the maximum continuous current rating in amperes of all parts except the
overcurrent device. All current-carrying parts, contacts, and pivot points are designed to carry the
amperes up to the frame size rating without exceeding heating limits.
1.2.2.6 Continuous Current Rating
The continuous current rating is a current value equal to or less than the frame rating. This value of
current is printed or stamped on the overcurrent device. It is possible to have a 600-ampere frame
rating, with a continuous current rating of only 100 amperes (due to the size of the overcurrent trip
device).
1.2.2.7 Expected Trip Time
A numerical value which expresses the operating time of the device under test.
1.2.2.8 Interrupting Rating
A numerical value associated with the highest current at rated voltage that the device can interrupt
without external damage.
1.3 Applications
SPI500
Universal in application, the SPI500 is a high current primary injection test unit with the ability to
perform high current commissioning tests as well as the testing of virtually all low-voltage molded-
Bekijk gratis de handleiding van Megger SPI500, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Megger |
| Model | SPI500 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 8745 MB |
