255X [TE]

WILMAR? Protective Relays - 250 Series, Over/Undervoltage; 丰益？保护继电器 - 250系列，过压/欠压


型号：	255X
厂家：	TE CONNECTIVITY
描述：	WILMAR? Protective Relays - 250 Series, Over/Undervoltage 丰益？保护继电器 - 250系列，过压/欠压继电器
文件：	总1页 (文件大小：71K)
中文：	中文翻译
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Voltage Sensitive Relays

Function:

• ANSI/IEEE C37.90-1978

WILMAR™ Protective Relays – 250 Series, Over/Undervoltage

27/59

The 250 series relays provide combined Overvolt-

age and Undervoltage protection in a single

compact unit.

6 -32 STUDS (6)

Models are available for single phase or three

phase applications, and are suitable for either 50

Hz, 60 Hz, or 400 Hz operation. The trip point is

adjustable.

A transistorized circuit provides a sharp and

accurate response at the preset tripping voltage;

unaffected by temperature or frequency variations.

Single

Phase

Three

Phase

64"

DIA.

4 MTG. HOLES

Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.

Contact Arrangements

NC - Open at nominal voltage. Closed at

Overvoltage and Undervoltage

NO - Closed at nominal voltage. Open at

Overvoltage and Undervoltage

PRODUCT SPECIFICATIONS

PART NUMBER SELECTION

Sample Part No.

250X

Part Number

250 Series

Nominal Voltage ............................... See Part Number Selection

Undervoltage Trip ............................ 70-100% of nominal voltage, screwdriver adjustable

Overvoltage Trip............................... 100-125% of nominal voltage, screwdriver adjustable

Pick-Up to Drop-Out Differential ..... 3% maximum

Model: L-L Volts

250X = 120 VAC, 1 Phase, 50-400 Hz

251X = 120/208 VAC, 3 Phase, 4 Wire, 50-400 Hz

252X = 115 VAC, 3 Phase, 3 Wire, 50-400 Hz

253X* = 230 VAC, 3 Phase, 3 Wire, 50-400 Hz

254X* = 380 VAC, 3 Phase, 3 Wire, 50-400 Hz

255X*= 460 VAC, 3 Phase, 3 Wire, 50-400 Hz

Contact Ratings ................................ 5 amp resistive at 120 VAC or 28 VDC

Contact Form.................................... One set N.O., one set N.C.

256X* = 575 VAC, 3 Phase, 3 Wire, 50-400 Hz

Mounting

Blank = Stud

X = Flange

Operating Temperature Range ........ -20°C to +85°C

Notes:

1. Remove screws for access the overvoltage or undervoltage trip adjustments. Clockwise rotation

* Enclosure heigth is 3.835"

of the adjustment potentiometer will raise the trip point.

Consult factory for additional models.

2 5

Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International)