4 S&C Instruction Sheet 466-500
Introduction
Operating
Consider-
ations
For VacuFuse II Self-Resetting Interrupters with the
Reclose
feature:
The VacuFuse II Self-
Resetting Interrupter is factory-set with a fuse link TCC curve, an open interval between the initial
trip (TCC0) and the first test (TCC1) of between 0.5 and 5 seconds, as well as a sequence reset time
(between 30 seconds and 15 minutes.)
The sequence of operation is as follows: The interrupter will open once in response to the fuse-
link curve (TCC0) and will have an open interval lasting a factory-programmed number of seconds.
Then, it will close, and the fuse-link curve will again become active (TCC1).
If the fault is still on the line, the VacuFuse II Self-Resetting Interrupter will lock open and drop
out. If fault current is not still on the line, the
Sequence Reset Time
timer will begin timing. If
another fault occurs during this time, the VacuFuse II Self-Resetting Interrupter will lock open
and drop out. If this timer expires without the VacuFuse II interrupter detecting fault current, the
VacuFuse II interrupter will reset to TCC0. Unless it has been specifically requested at the time of
order, TCC0 is the same curve as TCC1.
For VacuFuse II Self-Resetting Interrupters without the
Reclose
feature:
The interrupter will
open and drop-out in response to a fault.
Warranty
The warranty and/or obligations described in S&C’s Price Sheet 150 “Standard Conditions of Sale
– Immediate Purchasers in the United States” (or Price Sheet 153, “Standard Conditions of Sale –
Immediate Purchasers Outside the United States”), plus any special warranty provisions, as set
forth in the applicable product-line specification bulletin, are exclusive. The remedies provided
in the former for breach of these warranties shall constitute the immediate purchaser’s or end
user’s exclusive remedy and a fulfillment of the seller’s entire liability. In no event shall the seller’s
liability to the immediate purchaser or end user exceed the price of the specific product that gives
rise to the immediate purchaser’s or end user’s claim. All other warranties, whether express or
implied or arising by operation of law, course of dealing, usage of trade or otherwise, are excluded.
The only warranties are those stated in Price Sheet 150 (or Price Sheet 153), and THERE ARE NO
EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. ANY EXPRESS WARRANTY OR OTHER OBLIGATION PROVIDED IN PRICE SHEET 150
(OR PRICE SHEET 153) IS GRANTED ONLY TO THE IMMEDIATE PURCHASER AND END USER,
AS DEFINED THEREIN. OTHER THAN AN END USER, NO REMOTE PURCHASER MAY RELY
ON ANY AFFIRMATION OF FACT OR PROMISE THAT RELATES TO THE GOODS DESCRIBED
HEREIN, ANY DESCRIPTION THAT RELATES TO THE GOODS, OR ANY REMEDIAL PROMISE
INCLUDED IN PRICE SHEET 150 (or PRICE SHEET 153.)
