Porduct Overview

EKS1 series is a compact, integrated star-delta starter designed for three-phase squirrel-cage induction motors. It combines contactor, intelligent controller, and auxiliary contacts in a single unit to minimize inrush current, protect the grid, and simplify installation. Available in Automatic, Mechanical Emergency, and Multi-function variants to suit diverse industrial applications.

Features

Wide Application Range: Suitable for AC 50/60Hz, 380/400V networks, controlling motors up to 185kW.
Multiple Functional Models:
- EKS1 (Automatic): Standard automatic star-delta switching.
- EKS1-S (Mechanical Emergency): Includes a manual override for critical applications.
- EKS1-Z (Multi-function): Offers comprehensive protection, status display, and IoT communication.
Comprehensive Protection Suite: Includes protection for overload, locked-rotor, phase loss, three-phase unbalance, and over/under-voltage.
User-Friendly Interface: Features fault display, fault alarms, and status indicators for easy diagnostics.
Robust Construction: Designed for a long mechanical and electrical life, ensuring durability in demanding industrial environments.
Flexible Installation: Screw-type mounting with clear terminal markings for straightforward connection.

Advantages

Compact and Integrated Design: 1/3 smaller than traditional starters, reducing installation space and costs.
All-in-One Functionality: Combines star-delta start, dual-speed, reversible, overload, and fault protection.
Intelligent Control & Automation: Accurate, programmable star-delta sequencing for optimal motor performance.
Comprehensive Protection: Built-in safeguards against phase loss, imbalance, overload, over/under-voltage, and short-circuit.
IoT Ready: Real-time data and monitoring via IoT connectivity for intelligent operations and predictive maintenance.
Easy Installation: Elimination of complex wiring and multiple components simplifies deployment.
Multiple Models: Electric, mechanical emergency, and multifunctional starters to suit diverse applications.

FAQs

Q1: What is the main benefit of star-delta starting?
A1: It reduces starting current and torque, lowering stress on motors and minimizing voltage dips on the power network.

Q2: When should I choose the Mechanical Emergency type (EKS1-S)?
A2: For critical applications (e.g., fire pumps) where a direct manual start is required if signal/control line faults prevent automatic or normal manual start.

Q3: What does the Multi-function type (EKS1-Z) add?
A3: It supports dual-speed and reversible motor control and offers enhanced protection and communication options for monitoring.

Q4: How do I size the starter?
A4: Select the rated current based on the motor’s AC-3 current and application conditions; ensure Ue=380/400 V and frequency match; choose frame size and protections accordingly.

Q5: What control voltage options are available?
A5: 220 V and 230 V control voltages.

Technical parameters

Technical Data

Model		EKS1-50		EKS1-110						EKS1-265
Rated operating current(A)		40	50	65	75	85	95	100	110	120	160	185	225	265
Rated operating voltage(Ue)(V)		380/400
Rated insulation voltage(Ui)(V)		690		800						1000
Poles		3P
Electrical life(×10⁴times)		60
Mechanicallife(×10⁴ times)		600
Mechanical life of manual type (operating mechanism)		10000
Suggested motor power for controlling (AC-3)(kW)		22	30	37	45	45	55	55	75	90	110	132	160
Fuse for matching fuse(A)		80	100	125		160			200	250	315	400	500
Cable connection (mm²)		16		35		50				75			150
Coil parameters	Rated control voltage(Us)	220/230V
	Pick-up voltage	(80%~110%) Us
	Release voltage	(20%~75%)Us
	Pick-up power (VA)	160-210		200-280						≤500
	Maintain power (VA)	19		32						92

Dimensions

Download Files

Document currently available in English only.

Document Type

Document Name

Size

Product Catalog

EKS1 Star Delta Starter

1.35MB