GRE3

www.vishay.com

Vishay Milwaukee

Revision: 03-May-17

4

Document Number: 31882

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

RESISTOR CHARACTERISTICS

Power rating

W

6K to 36K per resistor load bank (up to 100K+ for assemblies)

Resistance range

Ω

GRE3 with ± 365 TCR: 0.08 to 240

GRE3 with ± 930 TCR: 0.06 to 160

Resistance tolerance

%

10

TCR

ppm/°C

± 365, ± 930

Operating temperature

°C

-55 to +415

Temperature rise

°C

375 above an ambient of 40 °C

Maximum altitude

f.a.s.l. (m.a.s.l.)

Derate above 4921 f.a.s.l. (1500 m.a.s.l.)

Short-term overload (surge)

25 x, 15 x, or 10 x rated power for 5 s (varies by wattage)

Maximum working voltage

V

(

Insulation resistance

Ω

1M

Dielectric voltage

2500 for 60 s

Creepage

inch (mm)

1.18 (30) typical

Inductance

μH

GRE3: 45 to 225

(varies by wattage and resistance)

Electrical or mechanical customization

APPLICATION FORMS AND TECHNICAL INFORMATION

APPLICATION FORMS

WEB LINK

Harmonic Filter Resistors

www.vishay.com/doc?49889

Load Bank Resistors

www.vishay.com/doc?49893

Dynamic Braking Resistors

www.vishay.com/doc?49887

Neutral Grounding Resistors

www.vishay.com/doc?49904

APPLICATION NOTES

WEB LINK

Determining Nominal Resistance

www.vishay.com/doc?21044

Understanding Load Steps and Resolution

www.vishay.com/doc?21045

Understanding Tied Live Designs

www.vishay.com/doc?21043

OTHER RESISTORS

WEB LINK

Wirewound Resistors Guide

www.vishay.com/doc?49654

GLOBAL PART NUMBER INFORMATION

Resistor only: GRE3J2R128K00N0000 (GRE3 30 000 W 2.128

Ω 10 % IP00)

Resistor with two high IP20 enclosure: GRE3J2R128K2020000 (GRE3 60 000 W 2.128

Ω 10 % 2-IP20)

Custom resistor with enclosure: GRE3J2R128K2021111 (GRE3-1111 60 000 W 2.128

Ω 10 % 2-IP20)

G

R

E

3

A

2

R

128

K

0

0

N

0

000

GLOBAL

MODEL

(5 digits)

RESISTANCE

VALUE

(5 digits)

TOLERANCE

(1 digit)

ENCLOSURE

TYPE

(2 digits)

ENCLOSURE

HEIGHT

(1 digit)

SPECIAL

(4 digits)

GRE3A to GRE3L

per Electrical Table

on page 2

2R128 = 2.128

Ω

R = decimal

resistance value is

for each individual

resistor bank.

K = ± 10 %

Tolerance value is

for each individual

resistor bank.

IPxx = IP rating

00 = IP00 / NEMA 0

(Open)

20 = IP20 / NEMA 1

(Screen)

23 = IP23 / NEMA 3

(Outdoor)

N = no enclosure

(standard)

See GRE1 and GRE2

Enclosure

Dimensions table

for number.

Assumes all resistor

banks to be identical

per first 11 digits of

part number and all

resistors will be

customer wired as

required.

0000 = standard

Engineering

controlled internal

document number