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Series EMCRT

Product catalog summary

Overview: The document details the specifications and features of the EMCRT series, a three-phase motor reverser designed for 480 Vac systems, supporting up to 7.5 kW. It includes part numbers EMCRT48D50 and EMCRT48D75, which cater to different power requirements.

Electrical Specifications:

Input Control: Operates within a control range of 2-30 Vdc, with an input current range of 5-25 mAdc. The must turn-off voltage is 6 Vdc, and it includes protection against simultaneous control.
Output Load: The EMCRT48D50 supports a mains voltage range of 24-520 Vac and a load current of 0.8-8.5 A, while the EMCRT48D75 supports 24-550 Vac and 0.8-16 A. Both models have a non-repetitive peak voltage of 600 V.

Features and Benefits:

Controls and reverses three-phase motors without a direct third leg.
IP20 touch-proof housing and high immunity components up to 600 Vpeak.
Includes built-in snubber and MOV, with forward/reverse display LED.

Mechanical Specifications: The device weighs 4.58 oz (130g) and includes detailed dimensions for installation.

Environmental Specifications:

Operating temperature ranges from -40 to +100°C.
Input-output isolation is rated at 3300 Vrms, and output-case isolation at 3000 Vrms.

Thermal Characteristics: The document provides graphs for power dissipation and surge current, indicating performance with and without a heat sink.

EMC Compliance: The device meets various IEC standards for conducted and radiated immunity, ensuring no turn-on or damage under specified conditions.

Applications: Primarily designed for three-phase motors, the EMCRT can also be adapted for single-phase motors with modifications.

Installation and Wiring: Detailed instructions for control and power wiring are provided, including recommended torque and screwdriver types.

Catalog excerpts

TELEDYNE RELAYS A Teledyne Technologies Company NEW Series EMCRT Three-Phase Motor Reverser 480 Vac, Up to 7.5 kW FEATURES/BENEFITS • Controls and reverses three-phase motors without direct third leg (two legs) • IP20 touch-proof housing • Up to 10hp motors • Very high immunity components, 1600 Vpeak • All solid-state components • Built-in snubber and MOV • Forward/Reverse display LED Part Number Description EMCRT48D50 3x480 Vac 4kW Motor Reverser EMCRT48D75 3x480 Vac 7.5 kW Motor Reverser Switch Type2 Line Voltage1 Output Current - Amps NOTES 1) Line Voltage (nominal): 48 = 480 Vdc nominal 2) Switch Type: D = zero-cross turn-on ELECTRICAL SPECIFICATIONS (+25°C ambient temperature unless otherwise specified) INPUT (CONTROL) SPECIFICATIONS Min Max Units Input Current Range 15 25 mAdc Must Turn-Off Voltage 6 Vdc Reversing Time (fixed) 70 ms Protection Against Simultaneous Control Yes LED Yes EMCRT Series © 2005 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com

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TELEDYNE RELAYS ATeledyne Technologies Company NEW Series EMCRT Three-Phase Motor Reverser 480 Vac, Up to 7.5 kW Mains - or load Mains or load Load or mains Mains or load Load or mains ELECTRICAL SPECIFICATIONS (+20°C ambient temperature unless otherwise specified) OUTPUT (LOAD) SPECIFICATIONS Min Max Units Mains Voltage Range EMCRT48D50 24 Non-Repetitive Peak Voltage Load Current (Motor Load) EMCRT48D50 0.1 Three-Pole Power Motor EMCRT48D50 EMCRT48D75 Voltage Drop Non-Repetitive Overload Current EMCRT48D50 EMCRT48D75 I2t@ 10ms EMCRT48D50 EMCRT48D75 Power Factor (Rated Current) Turn-On...

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NEW Series EMCRT Three-Phase Motor Reverser 480 Vac, Up to 7.5 kW TELEDYNE RELAYS ATeledyne Technologies Company THERMAL CHARACTERISTICS Load Current (Arms) Ambient Temperature (°C) SURGE CURRENT © 2005 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com

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NEW Series EMCRT Three-Phase Motor Reverser 480 Vac, Up to 7.5 kW Screwdriver Type Recommended Torque Fine Stranded (with ferrule) Fine Stranded (with ferrule) TELEDYNE RELAYS ATeledyne Technologies Company CONTROL WIRING POWER WIRING Screwdriver Type Recommended Torque Fine Stranded (with ferrule) Fine Stranded (with ferrule) APPLICATION WITH ONE PHASE MOTOR The EMCRT relay, initially developed to reverse three-phase asynchronous motors, can be used for reversing single phase motors. This relay has four power switches, a reversing temporization and a lock in case of simultaneous controls. If...

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