STY-KC-Series Intelligent combination type low voltage power capacitor compensation
1 Generation :
Working in a 0.4kv low voltage network, the intelligent reactive compensation installation (intelligent
combination type low voltage energy-saving power capacitor) can reduce line loss, raise power
factor, improve power quality, and is energy-saving. It combines advanced technologies like modern
measurement and control, power electrionics, network communication, auto-control, and power capacitor.
Compared with traditional reactive compensation installations, it is smaller, cheaper, more
cost-saving, more flexible, more convenient to maintain, with less power consumption, longer life
span and more reliability, meeting a higher demand of modern power grid for reactive compensation.
2 Applicaton fields
The capacitor compensation installation offers solutions to improve power factor and increase
power grid efficiency. The main application fields are:
Factory power distribution systems Residential area power distribution systems
Municipal commeicial buildings Tunnel traffic power distribution systems
Box transformer substation, cabinet sets, and outdoor distribution boxes
3 Types and meanings
Three phase joint compensation or split phase compensation Intelligent power capacitors
4 Normal working and installation conditions
4.1 Ambient temperature:-25ºC ~ +55ºC
4.2 Relative humidity:40ºC ≤ 20%;20ºC ≤ 90%
4.3 Altitude:≤ 2000m
4.4 Environmental conditions: no noxious gas and vapour; no conductivity or explosive dust;
no violent mechnical vibration.
5 Main parameters and other conditions
5.1 Measurement error Voltage:≤ ±0.5%,Current:≤ ±0.5%,
Active power:≤ ±1%,Power factor:≤ ±1%,Temperature:±1ºC
5.2 Protection error
Voltage:≤ ±0.5%,Current:≤ ±0.5%,Temperature:±1ºC ,Time:±0.1s
5.3 Reactive compensation parameters
Reactive compensation error:≤ Minimum capacitance 50%,Capacitor switching time can be
set between 10s~180s,
5.4 Reliability parameters
Control accuracy: 100%,Permissible switching times: 1 million,
Attenuation ratio of capacitance running time: ≤ 1% per year,
Attenuation ratio of capacitance switching: ≤ 0.1% per 10,000 times
5.5 Mains conditions:
rated voltage:380V±20%;Harmonic voltage: Sine wave, with total
aberration rate no more than 5%;Rated frequency:50Hz/60Hz;Harmonic current:
the harmonic current at the point of common connection must not exceed the standard value
requested by GB/T14549-1993. Power consumption:≤ 3W.
5.6 Executive standards: electric clearance and creep distance, insulating strength,
safety protection, short circuit strength, sampling and controlling circuit all apply to the
corresponding regulations stated in GB/T15576-2008 Low Voltage Combination Reactive
Power Compensation Installation.
6 Specifications and data of main product types
| Compensation modes |
Product types |
Type specifications |
Capacitor Rated voltage(V) |
Rated capacitance
(kvar) |
Dimensions
(L×W×H)mm3 |
| Three-phase compensation |
LCD type or (Digital tube type -A) |
STY-KC/CS /450/10(5+5) |
450 |
10 |
380×80×245 |
| STY-KC/CS /450/15(10+5) |
450 |
15 |
380×80×265 |
| STY-KC/CS /450/20(10+10) |
450 |
20 |
380×80×265 |
| STY-KC/CS /450/30(20+10) |
450 |
30 |
380×80×345 |
| STY-KC/CS /450/40(20+20) |
450 |
40 |
380×80×345 |
| STY-KC/CS /450/50(25+25) |
450 |
50 |
380×110×350 |
| STY-KC/CS /450/60(30+30) |
450 |
60 |
380×110×390 |
| STY-KC/CS /450/70(35+35) |
450 |
70 |
380×110×480 |
| Phase-splitting compensation |
LCD type or (Digital tube type -A) |
STY-KC/CF /250/5 |
250 |
5 |
380×80×245 |
| STY-KC/CF /250/10 |
250 |
10 |
380×80×265 |
| STY-KC/CF /250/15 |
250 |
15 |
380×80×295 |
| STY-KC/CF /250/20 |
250 |
20 |
380×80×345 |
| STY-KC/CF /250/25 |
250 |
25 |
380×80×385 |
| STY-KC/CF /250/30 |
250 |
30 |
380×80×405 |
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