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  • Install between stator windings for continuous protection of motors and generators
  • Increased safety sensors for use in hazardous areas
  • Single and dual elements offer high reliability
  • Sensor dimensions to fit any machine
  • Class F or Class H
Increased Safety
Stator Winding Temperature Sensors

Overview

Insert these thin, laminated RTDs in winding slots to detect high temperatures before nsulation damage occurs. RTD temperature sensors continuously monitor conditions and provide the long term trend data that is necessary for making adjustments before unexpected alarms occur. These models are designed for use in hazardous areas, where there may be a presence of flammable gas under normal operating conditions. Strict construction guidelines prevent arcing. Certified as “increased safety” devices, these RTDs have component approval for Zone 1, Groups llA, llB, and llC.

  • Pt100, Ni100, or U.S. curves
  • CENELEC EEx e II certified
  • Tested and certified by N.V. KEMA
  • EC-Type Examination Certificate KEMA 03ATEX2240 U
  • Complies with European standards for electrical apparatus for
    potentially explosive atmospheres: ATEX Directive 94/9/EC
    EN 50 014: 1997, General requirements
    EN 50 019: 2000, Increased safety

Specifications

Temperature limit: 180°C (356°F), class H

Body material: High temperature epoxy glass.

Leadwires: 2, 3, or 4 leads, stranded copper, AWG #22 (0.35
mm2, with TFE or polyimide insulation).

Dielectric strength: 3,200 VRMS at 60 Hz, 1 mA maximum
leakage current, tested momentarily (1–5 seconds), between
the leads and external flat body surface.

Specification and order options
S100050 PD Model number from table on next page

79

RTD length in .1" increments:
Example: 79 = 7.9" (200 mm)
Minimum length = 20 (2.0" [51 mm])
Maximum length= 232 (23.2" [590 mm])

T

Lead insulation:
T = TFE
K = Polyimide film

394

RTD width in .001" increments:
Example: 394 = .394" (10 mm)
Minimum width
= .219" (5.6 mm) for 2 or 3 leads;
= .285" (7.25 mm) for 4 leads
Maximum width = .956" (25.4 mm)

Z

Number of leads:
Y = 2 leads
Z = 3 leads
X = 4 leads

15

Lead length in inches

F

Lead configuration:
T = Twisted leads
F = Flat leads

N

Lead covering:
N = No jacket
S = FEP jacket overall (available only
with twisted lead configuration option “T”)

S100050PD79T394Z15FN = Sample part number

 

Wire-wound or thin-film RTD element

Wire-wound RTDs, embedded in stator slots, are the most common
method for measuring winding temperature in large
motors. The wire-wound element extends through most of the
body length and measures the average temperature of the
winding.
Thin-film RTDs are identical, except for the size of the sensing
element. Because the thin-film element is small, approximately
0.08" x 0.09" (2.0 mm x 2.3 mm), it senses the temperature in
only one small spot of the winding. Thin-film elements are best
suited for shorter length stator sensors.
 

Wire-wound RTD elements

ThicknessPlatinum (0.00385 TCR)
100Ω ±0.12 at 0°C
Meets IEC 751, Class B		Platinum (0.00385 TCR)
100Ω ±0.5 at 0°C		Nickel (0.00618 TCR)
100Ω ±0.2 at 0 C
Meets DIN 43760
Platinum (0.00392 TCR)
100Ω ±0.5 at 0°C
0.079" [2.0 mm]S100050PDS100050PES100050NBS100050PA
0.098" [2.5 mm]S100051PDS100051PES100051NBS100051PA
0.118" [3.0 mm]S100052PDS100052PES100052NBS100052PA
0.138" [3.5 mm]S100053PDS100053PES100053NBS100053PA
0.157" [4.0 mm]S100054PDS100054PES100054NBS100054PA
0.177" [4.5 mm]S100055PDS100055PES100055NBS100055PA

Thin-film RTD elements

ThicknessPlatinum (0.00385 TCR)
100Ω ±0.12 at 0°C
Meets IEC 751, Class B		Platinum (0.00385 TCR)
100Ω ±0.5 at 0°C		Nickel (0.00618 TCR)
100Ω ±0.2 at 0 C
Meets DIN 43760
Platinum (0.00392 TCR)
100Ω ±0.5 at 0°C
0.079" [2.0 mm]S200050PDS200050PES200050NBS200050PA
0.098" [2.5 mm]S200051PDS200051PES200051NBS200051PA
0.118" [3.0 mm]S200052PDS200052PES200052NBS200052PA
0.138" [3.5 mm]S200053PDS200053PES200053NBS200053PA
0.157" [4.0 mm]S200054PDS200054PES200054NBS200054PA
0.177" [4.5 mm]S200055PDS200055PES200055NBS200055PA