8EA SENSATA | Alldatasheet

Document overview

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  • PDF pages: 6

Technical content

Features

  • Solid-state PTC motor starter
  • Designed for use with most split phase, capacitor run and/or start, fractional h.p. hermetic compressors
  • Available for all single phase voltage applications
  • Low power dissipation
  • Easy installation
  • Electrically (EMI) noise free
  • Operating noise free
  • High reliability with no moving parts
  • Designed 'IBPS' feature for PTC failure protection (Integrated Backup Protection System) The Sensata Technologies 8EA motor starter, a low-cost alternative to electro-mechanical relays, performs the PTC (positive temperature coefficient) solid-state starter function. The 8EA is suitable for compressors used in refrigerators, freezers, water coolers, de-humidifiers, vending machines and similar refrigeration applications. It plugs directly onto the compressor terminal pins, and is frequently used with the 4TM plug-on motor protector.
  • Utilizes PTC pill materials to energize / de-energize motor start windings
  • Provides inherent start winding protection
  • Optimal packaging approach improves efficiency
  • Used in 120V or 240V applications
  • Provides low power consumption in industry
  • Wide spectrum of resistance ranges available
  • PTC pills 100% electrically tested twice
  • High reliability with no moving parts
  • 8EA 200K cycles minimum; 500K cycles available.
  • Dissipates less than 2.5 watts under normal operating conditions
  • Fits within most existing terminal fences
  • Highly legible part coding
  • One rating will potentially service entire compressor voltage series
  • Mounts directly to the compressor terminal pins
  • Compatible with world class 4TM motor protection

sensata.com Page 2 Copyright © 2024 Sensata Technologies, Inc. SPECIFICATIONS Electrical Component Assembly ProcessAssembly Process Description PTC Performance Common Electrical Rating The illustration above depicts the assembly of the 8EA onto the compressor. The 4TM motor protector is plugged onto the common pin. The 8EA plugs onto the remaining 2 pins. Female flag connectors are connected, and the electrical cover encloses the entire assembly. When power is first applied to the compressor via the 8EA, the PTC pill is in low resistance state. Current flows through the PTC pill to the start windings, causing a beneficial phase angle shift between start and main windings, and resulting in an increase in the starting torque. 8EA Series Application Voltage Vmax/Imax Nominal Resistance (Ohms) Heat Capacity MCP 14CX 15CX 16CX 17CX 18CX 19CX 20CX 21CX 22CX 23CX 24CX 120 120 120 240 240 240 240 120 120 240 240 4.7±20% 6.8±20% 10 ±20% 22 ±20% 33 ±20% 15±20% 47 ±20% 4.7±20% 3.9±20% 15.0±20% 68.0±20% 1.40 1.40 1.40 1.40 1.40 1.40 1.40 2.82 1.40 1.40 1.40 For other ratings contact Sensata. 8EA PTC Motor Starter Design Chart Independent Variable Device Property Switch Time Power Max. Voltage Cool Rate PTCR Resistance á â â á â Mass â â â â â Switch Temp. â â â — á General trends are shown for changes in the PTCR element specifications and the corresponding 8EA device properties.

sensata.com Page 3 Copyright © 2024 Sensata Technologies, Inc. Curves Dimensions in mm DIMENSIONS AND DIAGRAMS 8EA Gen2 8EA Gen3

sensata.com Page 4 Copyright © 2024 Sensata Technologies, Inc. Wiring Diagrams Terminal Configurations APPLICATION PROCEDURE Step 1: Assemble Data Required for New Applications Example R0 Resistance 5.0 Ohms Max. Volt (Vmax) 162 VAC Max Current (In Rush) 8 Amp Switch Time of Motor > 0.5 Sec @ 8 Amp Ambient 25oC Example Motor Type RSCR Reset Time < 80 Sec @ Nom. Volt Ambient 25°C Test Requirements

  • 250K Cycles @ Max. Operational Conditions
  • 300 Hrs. @ Max. Volt +10% Step 2: Select PTC pill based on resistance and maximum operating conditions. Step 3: Select 8EA physical configuration based on motor type. Step 4: Switch Time Calculation (See electrical rating on previous page). (See terminal configurations on previous page). The amount of time required for PTC to switch into its high resistance state can be approximated as follows:

sensata.com Page 5 Copyright © 2024 Sensata Technologies, Inc. Equation Time MCP (TS-TA) I2R MCP Heat Capacity (Watt-Sec/°C) TS Switch Temperature (°C) TA Ambient Temperature (°C) I Inrush Current (Amps-Rms) R Initial Device Resistance Under Voltage (Use R0 x 0.8) Example R 5.0 Ohms (R=5x.8=4) I 8 Amps TS 120°C TA 25°C MCP 1.60 Time (Sec) 1.60 (95) (82) (4) Switch Time 0.59 Sec. Theoretical Calculated PTC Switch Time Should Be Time Required to Start Motor Glossary Measured resistance value at 2 5 oC Max. voltage of 2.0 volts. Cooldown Time Time required for the PTC resistance to return to two times the initial value (2R0) Curie Point (Switch Temp.) Temperature obtained with a resistance value of two times (2R0) the minimum resistance value (R0) VMAX Maximum operating voltage which may be applied across the PTC continuously at the ambient temperature specified and in a steady high resistance state. VR Application rated supplied voltage/ 120 or 240 VAC (below Vmax) ISS Steady state current remaining at maximum operating voltage. IMAX Maximum operating current. Application Notes 1. The surface and terminals of the 8EA device can reach high temperatures under normal running conditions. Any material in contact with the 8EA and its terminals, including wire and quick-connect receptacle plastic insulation, should have a minimum temperature rating (RTI) of 105°C. Adequate spacing should be provided to insulate lower-rated materials from this heat source. 2. The 8EA device should be protected from potential sources of liquid, such as the evaporator tray and water connections. 3. Certain materials, such as chlorine (Cl) containing gases, can degrade the characteristics of the 8EA device. The 8EA device should not be exposed to sulfur (S) or chlorine (Cl) containing gases, and must be kept away from materials that can generate them. In particular, avoid the use of polyvinyl chloride (PVC) insulation in contact with the 8EA terminals. 4. The 8EA device is designed to be used in conjunction with an electrical cover. Important Notice: Sensata Technologies reserves the right to make changes to, or to discontinue, any product or service identified in this publication without notice. Before placing orders, users should obtain the latest version of the relevant information to verify that the information being relied upon is current. Sensata Technologies assumes no responsibility for customers’ product designs or applications. Users must determine the suitability of the Sensata device described in this publication for their application, including the level of reliability required. Many factors beyond Sensata’s control can affect the use and performance of a Sensata product in a particular application, including the conditions under which the product is used and the time and environmental conditions in which the product is expected to perform. As these factors are uniquely within the user’s knowledge and control, it is essential that the user evaluate the Sensata product to determine whether it is fit for a particular purpose and suitable for the user’s application. Sensata Technologies products are sold subject to Sensata’s Terms and Conditions of Sale which can be found at www.sensata.com/terms.htm

sensata.comCopyright © 2024 Sensata Technologies, Inc. Datasheets provided by Sensata Technologies, Inc., its subsidiaries and/or affiliates (“Sensata”) are solely intended to assist third parties (“Buyers”) who are developing systems that incorporate Sensata products (also referred to herein as “components”). Buyer understands and agrees that Buyer remains responsible for using its independent analysis, valuation, and judgment in designing Buyer’s systems and products. Sensata datasheets have been created using standard laboratory conditions and engineering practices. Sensata has not conducted any testing other than that specifically described in the published documentation for a particular datasheet. Sensata may make corrections, enhancements, improvements, and other changes to its datasheets or components without notice. Buyers are authorized to use Sensata datasheets with the Sensata component(s) identified in each particular datasheet. HOWEVER, NO OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE TO ANY OTHER SENSATA INTELLECTUAL PROPERTY RIGHT, AND NO LICENSE TO ANY THIRD PARTY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT, IS GRANTED HEREIN. SENSATA DATASHEETS ARE PROVIDED “AS IS”. SENSATA MAKES NO WARRANTIES OR REPRESENTATIONS WITH REGARD TO THE DATASHEETS OR USE OF THE DATASHEETS, EXPRESS, IMPLIED, OR STATUTORY , INCLUDING ACCURACY OR COMPLETENESS. SENSATA DISCLAIMS ANY WARRANTY OF TITLE AND ANY IMPLIED WARRANTIES OF MERCHANTABILITY , FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT, QUIET POSSESSION, AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHTS WITH REGARD TO SENSATA DATASHEETS OR USE THEREOF. All products are sold subject to Sensata’s terms and conditions of sale supplied at www.sensata.com. SENSATA ASSUMES NO LIABILITY FOR APPLICATIONS ASSISTANCE OR THE DESIGN OF BUYERS’ PRODUCTS. BUYER ACKNOWLEDGES AND AGREES THAT IT IS SOLELY RESPONSIBLE FOR COMPLIANCE WITH ALL LEGAL, REGULATORY , AND SAFETY-RELATED REQUIREMENTS CONCERNING ITS PRODUCTS, AND ANY USE OF SENSATA COMPONENTS IN ITS APPLICATIONS, NOTWITHSTANDING ANY APPLICATIONS-RELATED INFORMATION OR SUPPORT THAT MAY BE PROVIDED BY SENSATA. Mailing Address: Sensata Technologies, Inc., 529 Pleasant Street, Attleboro, MA 02703, USA CONTACT US Rev.04/10/2025 Americas +1 (508) 236-2551 electrical-protection-sales@ sensata.com Europe, Middle East & Africa +3 174 357 8156 info-sse@list.sensata.com Asia Pacific EP_Asia_Public@list.sensata. com China +86 (21)2306 1651 India +91 (40)4033 9611 Japan +81 (45)277 7104 Korea +82 (53) 644 9685 Rest of Asia +65(6478)6860 UL / CUL File SA3745 ENEC 2018218.01 CQC CQC02002001345 Sensata Product Number 8EA Designating 8EA PTC Pill Series Two numerals. See Common Electrical Rating Table Designating 8EA housing materials One character Designating Phys. Config. One or two numerals Designating contact system Two numerals AGENCY APPROVALS & CERTIFICATIONS ORDERING OPTIONS Example : 8EA14C1-02 8EA C 1 0214