BuyLog Flippingbook FEB 2025

TRANSFORMERS - LOW VOLTAGE, DRY TYPE, BUYLOG SECTION 5

5-19

— Noise isolation — Guard II™ Product overview

Features • Built-in electrical noise filters and spike/ surge suppressor components • Grounded full width copper electrostatic shield between primary and secondary windings • Up to 120 dB common mode noise attenuation • Up to 60 dB transverse mode noise attenuation • Rain shields available for field installation converting the enclosure to NEMA 3R • NEMA 3R stainless steel (316) available through 150 kVA 150° C rise

Guard II ™ noise isolation transformers provide common mode noise attenuation plus an enhanced level of transverse mode noise attenuation for increased protection of sensitive electronic equipment.

— Guard II™ Transformer Shown with optional rain shield

PRIMARY H2

SECONDARY

X2

X0

X1

C

ES

H1

H3

F = FUSE V = VARISTOR (MOV) C = CAPACITOR ES = ELECTROSTATIC SHIELD

F

V

X3