WCR28300A39000KB [VISHAY]

Water Cooled Wirewound Resistor;


型号：	WCR28300A39000KB
厂家：	VISHAY
描述：	Water Cooled Wirewound Resistor
文件：	总4页 (文件大小：105K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

WCR

Vishay MCB

www.vishay.com

Water Cooled Wirewound Resistor

FEATURES

• Direct cooling without heat sink

• Better power / volume ratio

• Non-inductive optional

• 1 WCR = 6 wirewound resistors = 5 thick-film resistors

• Up to 6 resistive functions on 1 WCR tube

• 1 single supply for several functions (snubber and divider)

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

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DESIGN SUPPORT TOOLS

Models

Available

STANDARD ELECTRICAL SPECIFICATIONS

POWER RATING ⁽¹⁾

RESISTANCE RANGE

TOLERANCE

ꢀ

GLOBAL MODEL



WCR 30 x 250

WCR 38 x 250

WCR 38 x 300

1500

2000

2500

4.7 to 56K

Note

(1)

Water inlet temperature 60 °C with 40 % glycol, flow rate 5 l/min

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

ppm/°C

RESISTOR CHARACTERISTICS

100 ppm/°C (typical)

Up to 3500 V (6600 V on specific request)

-55 to +120

Temperature coefficient

Maximum working voltage

Operating temperature range

°C

GENERAL CHARACTERISTICS

Core

Ceramic

Winding

Hydraulic plugs

Coating

Ohmic values

Inductance

Cooling

NiCr alloy fully insulated from water

Stainless steel (corrosion free)

Vitreous enamel or silicone coating ⁽¹⁾

E12 (4.7  to 56 k)

Non-inductive type on request

Industrial or deionized water; coolant mixtures up to 60 % glycol

Operating pressure

Test pressure

Flow

1 bar to 6 bars

10 bars

5 l/min to 15 l/min

CTI Index

> 600

Creeping distance

Clearance distance

Electrical connections

Mounting

Overload

Endurance

On request

M3 screw and nut (other on request)

Vertically (recommended)

2 x P_n10 s (_{60 °C}at 5 l/min)

1000 cycles P_n30 s/30 s; variation < 5 %

0.8 bar for WCR 30 mm x 250 mm; 0.25 bar for WCR 38 mm x 250 mm and WCR 38 mm x 300 mm

(flow rate 10 l/min)

Pressure drop

Note

(1)

For PD reason (withstand)

Revision: 16-Nov-17

Document Number: 32500

For technical questions, contact: mcbfixedresistors@vishay.com

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

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

WCR

Vishay MCB

www.vishay.com

DIMENSIONS in millimeters

TYPE

30 x 250

Ø 8

250

38 x 250

Ø 10

250

38 x 300

Ø 10

300

Water pipe diameter

B + 0.5 / - 0

3.5

14.5

3.5

14.5

D_max.

Ø 3.2

H_max.

(1)

L_max.

304

335

385

G 3/8 ⁽²⁾

288

G 3/8 ⁽²⁾

292

G 3/8 ⁽²⁾

342

286

308

358

Weight

1 kg

1.3 kg

1.5 kg

Notes

(1)

Creeping / clearance on request

Other hydraulic connections on request

(2)

Revision: 16-Nov-17

Document Number: 32500

For technical questions, contact: mcbfixedresistors@vishay.com

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

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

WCR

Vishay MCB

www.vishay.com

SPECIFIC CHARACTERISTICS

Axis Title

120

10000

1000

100

120

100

10000

1000

100

0 % glycol

40 % glycol

10 20 30 40 50 60 70 80 90 100

Water Inlet Temperature (°C)

Flow Rate (l/min)

Fig. 1 - Nominal Power Dissipated

According to Water Inlet Temperature

P_n= f (Water Inlet Temperature)

Flow Rate = 5 l/min

Fig. 2 - Power Dissipated According to the Flow Rate

P_n= f (Flow Rate)

Temperature = 60 °C

OPTIONS

On request

ORDERING INFORMATION

WCR

30 x 250

10K

RESISTANCE VALUE

5 ꢀ

XXX

BO12

MODEL

STYLE

NON-INDUCTIVE WINDING

Optional

TOLERANCE

CUSTOM DESIGN

PACKAGING

5 %

10 %

Other on request

Optional

On request:

special value,

tolerance,

terminals, etc.

GLOBAL PART NUMBER INFORMATION

PRODUCT

TYPE

SIZE

OPTION

(if applicable)

RESISTANCE

VALUE

TOLERANCE

PACKAGING

INDUSTRIALIZATION

NUMBER

WCR

30250

38250

38300

A =

The first three digits

are significant

J = 5 ꢀ

K = 10 ꢀ

B = box

3 specific digits

(if applicable)

non-inductive

winding

Box quantity

depends of

figures and the last

specifiesthenumber

of zeros to follow,

R designates

model and size

decimal point.

4702 = 47 k

47R0 = 47 

EXAMPLES

MODEL

WCR

DESCRIPTION

WCR 38X250 15U A 5 % BO12

PART NUMBER

WCR38250A15R0JB

Revision: 16-Nov-17

Document Number: 32500

For technical questions, contact: mcbfixedresistors@vishay.com

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

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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www.vishay.com

Vishay

Disclaimer

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Revision: 09-Jul-2021

Document Number: 91000

WCR28300A39000KB [VISHAY]

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