TCD YBX3 EX db FLAMEPROOF MOTOR

3 PHASE FLAMEPROOF INDUCTION MOTORS

Techtop TCD YBX3 series of Ex db flameproof motors are certified for use in Zone 1 hazardous areas.

Certification
The full motor range of TCD YBX3 series complies to IEC60079-0:2011 Explosive atmospheres - Part 0 General requirements & IEC60079-1:2014-06 Explosive atmospheres – Part 1: Equipment protected by flameproof enclosure “d”.
The TCD YBX3 range is specially designed and certified for use in a Zone 1, Groups IIB or IIC, T4 class temperature, Ex db area. This range is certified to IEC/Ex and Atex.
 

Efficiency
The TCD YBX3 range in 2, 4 & 6 pole complies with MEPS2 requirements of AS/NZS 1359.5.2004 Table A3 (IE3 High Efficiency). Refer GEMS determination 2018.
Motors are tested in accordance with Test Method A of AS/NZS 1359.102.3 as per IEC60034-2-1.

Specification and Operating Parameters
The main dimensions and rated outputs generally conform to IEC60034 and IEC60072.
Motor performance data is designed and based upon:

• S1 continuous running duty
• Ambient temperature standard between -20˚ C ~ +40˚ C (Ambient up to 60˚C available by output deration).
• Altitudes up to 1000 meters above sea level.
• Standard voltage: 240V/415V, 415V/720V
• Optional voltages: 220V/380V, 230V/400V,
• 380V/600V, 400V/690V, 660V/1140V 50Hz/60Hz.
• IP66 protection enclosure
• Class F insulation with class B temperature rise

Motor Construction

• Stator and terminal box are manufactured from close-grained pearlitic grey cast iron having 250MPa tensile strength.
• Stator windings are wound with polyester enamel wire of high strength and treated with VPI (vacuum-pressure impregnation) varnish.
• Rotors are of cast aluminum and dynamically balanced.
• Stator and rotor cores are laminated with high-class electrical steel sheet of high permeability.
• Frame size 132 and below, shielded ball bearings are used and fitted with a wave washer at the drive-end.
• Frame size 160 and above are fitted with re-greaseable bearings, inner and outer caps are used to prevent any axial movement.
• Frame size 250 and above have a provision for mounting bearing temperature monitoring devices.
• Motors are fitted with anti-static plastic fan. Motors for vertical shaft down application are generally fitted with a rain canopy.

Terminal Box

• TCD YBX3 series are designed with a square box arrangement and have excellent flameproof protection.
• Motors as standard have 2 conduit entries, 1 x main entry & 1 x thermistor entry, both entries are fitted as standard with IEC/Ex approved cable glands

Electrical Connections and Thermistors

80 ~ 132 6 terminals for Star / Delta starting Optional
160 ~ 355 6 terminals for Star / Delta starting Fitted
Note: If star / delta starting is required for frame 132 and below, no thermistor is fitted.

Conduit Sizes
Motor frame Main conduit (X) Auxiliary conduit (X)
80 ~ 112 1 x M25 1 x M20
132 ~ 180 1 x M40 1 x M20
200 ~ 225 1 x M50 1 x M20
250 ~ 355 1 x M63 1 x M20
 

Paint
Motors are painted with a high-quality alkyd enamel finish in Carmine Red (RAL 3002), the thickness range is between 80 ~ 100 micron.
Options
Suitable for higher ambient temperatures based on deration of kW output.
Fitting of anti-condensation heaters.
Fitting of extended leads from main terminal box.
Suitable for use with VVVF drive based on fitting of 120˚C thermistors.
Force ventilation by fitment of IEC/Ex approved kit.
Bearings & Grease
All motors up to and including 280 frame are fitted with deep groove ball bearings with 80 to 132 frame being shielded type, 160 and above being open re-greaseable type.
All 4/6/8 pole motors in frames 315 and above are fitted with a roller bearing at the drive end, 2 pole motors are fitted with deep groove ball bearings.
We recommend lithium-based grease, please remove the grease plug located at the bottom of the bearing cap at the drive end and at the bottom of the fan cowl at non-drive end prior to greasing, both grease plugs
must be replaced after greasing.