Automatic capacitor banks with static system.

JAKIJK

Power factor correctionStatic switching units (Three phase).

Automatic capacitor banks with static system.

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Introduction

Selection table

2

3

JK3PSZTStatic switching units (three-phase)

4

JK3PSZT-XXXXX

Dimensions 5~7

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Automatic capacitor banks with static system.

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Automatic capacitor banks with static system

Automatic capacitor banks with staticsystem. JK3PSZT-XXXXX

The all series capacitor banks with staticsystem have been designed for Powerfactor correction purposes innetworks with fluctuating loads.

The variations in power are relativelyfast (in milliseconds) so that the switchingoperations are carried out by thyristors,which are connected to a voltage controlboard, so that the connection anddisconnection of the capacitor is carriedout with a zero voltage difference.

Transients are prevented between theconnection and disconnection of steps,obtaining the immediate response to theload fluctuations.

Functions and advantages of capacitorbanks with a static system

The functions or advantages of thiscompensation system are as follows:

Immediate response to the compensationrequest. The response time of the Powerfactor correction can be of a single networkfrequency cycle, thus achieving an almostinstantaneous compensation.

Elimination of start-up transients produc-ed by the capacitor's connection. The conn-ection takes place when the voltage networkmatches that of the capacitor when it is par-tially or totally loaded.

The lack of transients in the connection allo-ws us to eliminate gaps, flicker and any otheralteration generated by the connection's tran-sient.

Limited switching operations

Lower wear of capacitors and switching elem-ents, due to the elimination of transients andthe total absence of mobile mechanical parts.This is how we can greatly increase the work-ing life of the unit, as compared to conventio-nal electromechanical contactor units.

Connection of a static capacitor bankStatic capacitor banks are usually connectedto the general switchboard or secondary swit-chboards in the case of large-scale installatio-ns.

Reg

ula

tio

n m

od

e

Time(s)Fig.1

STATIC REGULATION

CONVENTIONAL REGULATION

20ms 8s

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Automatic capacitor banks with static system.

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JK3PSZT-XXXXXStatic switching units (three-phase)

Description

The static switching modules of theJK3PSZT series are the basic buildingblock for the construction of staticcap-acitor banks for power factor correctionpurposes.

These capacitor banks use thyristorsinstead of the classic contactors for theconnection of each large group of capa-citors and they are ideal in installationswhere the leakage current suffers quickand large fluctuations (load changes inintervals that can range from splitseconds to 8 or 10 seconds).

Application

The static switching units of theJK3PSZT Series have been designedto connect and disconnect capacitorsin milliseconds.

They can be used to build capacitorswith various steps, or for the individ-ual compensation of a load that mustbe compensated instantly due to con-nection / disconnection deficiencies,for example, in welding units, cranes,lifts, etc.

Features

Features

Protections

Ambient conditions

Construction features

Standards

Standard voltages

Frequency

Auxiliary voltage

Overload capacity

208~240, 380~480, 500~600VAC 10%±

47~63 Hz

220VAC 15%±

1.5 n during 1 minI

Bussmann or Hinoda

90℃

Fuses

du / dt

Thermostat

di / dt RC protection at 1000 V/ sμ

100 A/ s (L=12 H, not included, it must beμ μinstalled in series with the capacitor)

Maximum ambient temperature

Maximum temperature of thedissipator

50℃

80℃

Degree of protection

IEC6015-2, EN61000-6-4, EN61000-6-2

Automatic fan Heat sink 55 start, 45 stop℃ ℃

Input control signal AC control, 220VAC 15%. Contact control.±DC control, 12-24VDC.

IP00

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Automatic capacitor banks with static system.

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Dimensions

30mm

15

4m

m

142mm

5mm

22

0m

m

R S T

U V W

135mm

15

0m

m

142mm

P.1

30mm

FAN FAN

R S T

U V W

15

4m

m

142mm

5mm

24

3m

m

135mm

15

0m

m

142mm

P.2

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Automatic capacitor banks with static system.

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Dimensions

40mm

141mm

30

5m

m

FAN

R S T

U V W

133mm

19

0m

m

17

2m

m

141mm

5mm

P.3

141 mm

20

0 m

m

40mm

141mm

36

5

mm

FAN

R S T

U V W

135mm

24

0m

m

P.4

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Automatic capacitor banks with static system.

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Dimensions

31

mm

21

0m

m

263mm

R S T

U V W

16

8m

m1

68

mm

INPUT

LOAD

242mm

6mm

40

0m

m

263mm

P.5

P.6

62 m

m2

44

mm

306mm

R S T

U V W

20

0m

m2

00

mm

INPUT

LOAD

288mm

6mm

52

7m

m

306mm

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Automatic capacitor banks with static system.

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Functional block Diagram

R S T

U V W

Zero point inputcontroller.

Power supply.

Error signalindicates.

Power input

Load (capacitor)

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Fuse Fuse Fuse

Fuse opencheck circuit.

55°C fan wor-king circuitand overtemperaturecheck.

On the heatsink temper-ature sensor.

Automatic capacitor banks with static system.

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JAKI Enterprise Co., Ltd.No.11, Lane2 Rencih St.,Dali City, Taichung City41282 TaiwanTEL: +886-4-24915501FAX: +886-4-24954240www.jaki.com.tw

2011 JAKI Co., All Rights Reserved.