TM-170-50 Tyco Electronics, TM-170-50 Datasheet
![Shunt](/photos/21/37/213752/4435440_sml.jpg)
TM-170-50
Manufacturer Part Number
TM-170-50
Description
Shunt
Manufacturer
Tyco Electronics
Series
TMr
Datasheet
1.TM-10-50.pdf
(2 pages)
Specifications of TM-170-50
Current Rating
170A
Accuracy
± 0.25%
Sensing Element
Manganin
Shunt Voltage
50mV
Supply Current
170A
Lead Free Status / RoHS Status
na
Features
Compact space-saving
design
Accuracy class 0.5
Insulated base mounting
USA Mil. spec MIL-S-61B
Temperature coefficient
0.002% per 1°C
High overload withstand
ABS American Bureau of
Shipping Approved
Shunts
Specification
Construction
Potential Leads
Installation
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Ratings
model:
Accuracy class:
Output:
Temperature
Co-efficient:
Ambient
temperature:
Lightweight Shunts
870 Series
The end blocks are machined from solid
section, high conductivity brass. They each
carry two terminals, current connection is
made by either threaded studs or bolts
depending on the model, terminals for
potential lead connection are provided by
UNC screws with spring and plain washers.
The resistance elements are made from
manganin sheet for its low temperature co-
efficient and long term stability and strength,
hard soldered into slots in the end blocks.
The shunt is mounted on a high strength
black phenolic base with integral fixing holes.
The resistance of the leads from the potential
terminals must be taken into account when
the instrument is calibrated. Details of
standard lead lengths and resistances are
available on request.
871
872
873
0.5 (0.25 USA)
50mV (std)
75, 100 and 150mV
available
0.002% per °C overall
Calibrated for 20°C, they
can be used in ambient
range -20°C to +60°C
This lightweight range is specifically suitable for applications
where there are space and/or weight limitations in the
installation such as in portable equipment, compact
electronic instrumentation, mobile installations such as
tanks and aircraft etc.
In addition to ammeters, shunts can be used to measure
and/or monitor current in a wide range of measurement,
protection and control devices.
The 870 series lightweight shunts are manufactured to
comply with the U.S.A. military specification MIL - S161B.
Standard outputs give 50mV potential drop.
By careful design and choice of materials, it has been
possible to produce a high performance shunt which is
mechanically strong, light in weight and of extremely
compact dimensions with the ability to withstand high
overloads without damage and possessing long term
calibration stability.
10 - 150A
151 - 600A
601 - 1200A
Warning
Temperature Rise:
Maximum Load
Indicator:
The heat generated by the current is
dissipated by conduction through the busbar
or cable and by convection in the air. The
shunt temperature should not exceed 145°C.
Conductors must be of adequate cross
sectional area and contact surface clean and
level, with a thin coating of silican grease
applied to the contact surface area.
Ensure clamping bolts or nuts and washers
are sufficiently tight. Shunts above 100 amps
should be mounted with leaves vertical and
longitudinal axis horizontal. Where this is
impractical, forced-air cooling may be
necessary to limit the temperature to 145°C.
Shunts are not fully insulated and protection
against accidental contact may be necessary
in order to comply with Health and Safety
regulations.
A momentary rise up to
200°C will not affect the
performance of these
shunts. When mounted as
recommended in freely
circulating air the
temperature rise should not
exceed 100°C.
20mA
The 870 series is designed
to comply with U.S. military
specification MIL-S-61B.
Its performance meets all
requirements including
those covering dielectric
withstanding voltage,
voltage drop, sustained
load, overload
2 0 0 2
Related parts for TM-170-50
TM-170-50 Summary of contents
Page 1
Features Compact space-saving design Accuracy class 0.5 Insulated base mounting USA Mil. spec MIL-S-61B Temperature coefficient 0.002% per 1°C High overload withstand ABS American Bureau of Shipping Approved Shunts Lightweight Shunts 870 Series This lightweight range is specifically suitable for ...
Page 2
Lightweight Shunts 870 Series Dimensions Model 871 Dimensions are in millimetres. 1mm = 0.0394 inches Shunts ...