GE IRT51 E, Инструкция по эксплуатации, Страница: 13 / 51

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GEK-86038
3 . Remove the screw from the other ta p and place it in the left stationa r�
contact.
During relay o peration , tap screws should not be in both taps at the s ame time. ·If
they are , picku p will occur at the higher tap value. The relays a re ship ped with the
ta p screw in the 2. 0 amp tap.
IRT5 1F:
The auxiliary circuit for the I RT5 1 F may be u sed with 1 20 o r 240 volts AC , 5 0
o r 6 0 hertz; o r with 1 25 o r 25 0 volt DC*. The only a djustment that must be made to
accomodate these different power s u p plies is the po sition of a voltage level
selection link which is located internally to the relay and may be ea sily seen when
viewing the to p of the relay unit when the relay is removed from its case.
The voltage level selection link is labeled 11LOW" and "HIGH." The "LOW"
position is to be u sed for 1 20/1 2 5 volts*. The "HI GH" position i s to be u sed fo r
240/250 volts*. The voltage level selection link position can be changed by
loo sening the thumb screws and re po sitioning the link in the desired po sition. The
link sho uld not be permitted to connect the "LOW" and "HIGH" po sitions together. If
this is done , the auxiliary circuit will be disabled and will not o perate .
The IRT5 1F relay also has a set of convertible contacts on te rminals 9 and 1 0.
If a no rmally- clo sed contact is desired , connect the green lead to terminal 9 . If a
no rmally-o pen contact is desired; the g reen lead should be connected to terminal 1 0.
There is a sho rting bar between terminals 9 and 1 0. This sho rting bar is u sed
to protect current transfo rmer circuits from being o pened whenever the relay
connection plug i s removed. This sho rting bar may be removed if it is not u sed.
*
Some models of I RT5 1F( -)A relays are rated at 1 1 0/220 VAC o r DC. See Table 1.
IRT5 1G and IRT5 1 H:
The auxilia ry circuit fo r the IRT5 1 G and IRT5 1 H relays is the most vers atile of
all of the IRT auxiliary circuits. It may be used with 1 20 or 240 volts AC , 5 0 o r
6 0 hertz; o r with 125 o r 250 volts DC.
If 1 20 or 1 25 volts is to be u sed , a pply power to terminals 1 and 2. If a
higher voltage ( 24 0 o r 250 volts) is to be used , a p ply power to te rminals 1 and 3.
The I RT5 1 G and IRT5 1 H relays have a 0. 2/2. 0 amp DC ta rget seal-in unit that is
used in a circuit with a no rmally- o pen contact which will clo se when an
overtemperatu re condition is sensed. Fo r complete info rmation on the ta rget seal-in
unit , see the discus sion in the Auxiliary Circuit Connections section fo r IRT5 1 E.
There a re two no rmally-o pen and two no rmally-closed , elect rically sepa rate
contacts in the auxiliary circuit. One of the no rmally- o pen contacts is used in
conjunction with a ta rget seal-in unit. The contact states change when an
overtemperatu re condition is first sensed. They will stay in this new state until
two conditions are met:
1 2
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