Simpson 260 Series - Internal Battery Configuration

Introduction
misapplication on high voltage circuits can damage the Instru-
ment. Care and caution should always be exercised to protect
both the user and the Instrument.
1.2.3 Fuses
1.2.4 The І or 2 ampere fuses, in the 260-7P common terminal in-
put circuit, prevents burning or welding of the relay contacts on ex-
cessive high overload conditions. The 1 ampere, quick blow 3AG
fuse is rated to interrupt circuit voltage up to 250 volts. A sup-
plemental 2 ampere high energy fuse is provided for additional pro-
tection from severe overloads. This fuse is rated for an interruption
capacity of 1,000 amperes, up to 1,000 volts (Littlefuse #62031) or
10,000 amperes up to 600 volts (Bussman type BBS).
NOTES
If the 260-7P fails to indicate a reading, the 1 ampere
or the 2 ampere fuse may be burned out. (Refer to para-
graph 5.4 for fuse replacement.) Use only the specified
fuse type listed in the Replacement Parts List, Table 6-1.
The 0-10A range is not fused. The shunt connects
directly to the —10A and +10A jacks.
1.3 INTERNAL BATTERIES
1.3.4 There are two batteries in the ohmmeter circuits. One
is a NEDA 13F size D cell that furnishes 1.5-volts for the R X 1
and R X100 ranges. А МЕРА 1604A alkaline battery furnishes
9-volts for the R X 10,000 range and overload circuit. The
1.5-volt D cell is held in place with two spring clips which also
serve as battery contacts. The polarity symbols for the D cell
are marked near the battery contacts. The 9-volt battery is held
in place with a spring clip, but contact is made with a separate
1-4