Datasheet > S1721156380

S1721156380

更新时间： 2024-10-26 23:33:23

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数据手册

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S1721156380 数据手册

Current and Voltage Controls

3 Phase-neutral Max. and Min. Voltage Control

Types S 1721, SYY 155

• Monitoring relay for 3-phase upper/lower

phase-phase neutral voltage control

• Measures if all 3 phase-neutral voltages are

within set limits

• Measures on own power supply

• Operates irrespective of phase sequence

• Upper and lower limits separately adjustable

• Built-in adjustable timer function

• Output: 10 A SPDT relay

• Plug-in type module

• S-housing

• LED-indication for power supply and output ON

• Power supply is the 3-phase + N measuring voltage

Product Description

Ordering Key

S 1721 156 220

3-phase and neutral moni- is unstable or varies in value Housing

toring plug-in relay for sepa- in order to monitor that the Type

rate upper and lower voltage attached motors are perfor- Output

control. Often used to control ming as required. The S 1721 Power supply

all 3 phases and neutral where features built-in time delay.

the supplied electrical power

Type Selection

Plug

Output

Timer

Supply: 220 VAC

S 1721 156 220

Supply: 380 VAC

S 1721 156 380

Supply: 400 VAC

S 1721 156 400

Supply: 415 VAC

S 1721 156 415

Circular SPDT

Yes

SYY 155 220

SYY 155 380

SYY 155 415

Input Specifications

Output Specifications

Input

Pins 5, 6 & 7

Pin 11

Output

Rated insulation voltage

SPDT relay

250 VAC (rms)

(cont./elect.)

Arbitrary phase sequence

Neutral

Measuring ranges (VAC)

Contact ratings (AgCdO)

µ (micro gap)

Power supply (phase-phase) 3x220 +N 3x380 +N 3x400+N

Resistive loads

AC 1

10 A/250 VAC (2500 VA)

1 A/250 VDC (250 W)

10 A/25 VDC (250 W)

2.5 A/230 VAC

5 A/24 VDC

≥ 30 x 10⁶operations

± 18% ± 18% ± 18%

DC 1

Range (phase-neutral)

Upper level

Scale

Lower level

Scale

104-150 180-260 188-271

130-150 225-260 235-271

102-118% 102-118% 102-118%

104-124 180-215 188-225

82-98% 82-98% 82-98%

Small inductive loads AC 15

DC 13

Mechanical life

Electrical life

AC 1

≥ 2.5 x 10⁵operations

(at max. load)

Power supply (phase-phase)

3x415+N

Operating frequency

Dielectric strength

Dielectric voltage

Rated impulse withstand volt. 4 kV (1.2/50 µs) (cont./elect.)

(IEC 60664)

≤ 7200 operations/h

± 18%

Range (phase-neutral)

Upper level

Scale

Lower level

Scale

204-276

252-276

102-118%

204-228

82-98%

≥ 2 kVAC (rms) (cont./elect.)

measures value of own

supply. Range equals rms

value of a sinusoidal voltage

Specifications are subject to change without notice (26.10.99)

12 3

中文翻译

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