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HOME > PRODUCT > MCCB
Product name:YDZ20L Molded Case Circuit Breaker
Product brand:Zhejiang YADE Electric Co. Ltd.
Product area: HOUJIE Industrial Zone,Liushi town,Yueqing County,Wenzhou city,Zhejiang province
Customer service:13706780110(Sales Manager)
Online consultation:点击这里给威尼斯游戏网站发消息 威尼斯游戏网站电气

First, the scope

YDZ20L leakage circuit breaker is mainly used in AC 50Hz, rated voltage of 380V, rated current up to 630A of power distribution networks, as a personal electric shock or leakage protection device; also be used to prevent equipment insulation damage , fires caused by ground fault current danger; but also can be used to distribute power and protect circuits and power equipment overload and short circuit, also can be used as infrequent conversion of the lines used. YDZ20L series leakage circuit breakers derived products not leak alarm trip function can be used in uninterruptible power supply in the workplace.
YDZ20L leakage circuit breaker in line with GB 14048.2 standard.

two, YDZ20L leakage circuit breaker models and their specifications


Type Meaning Note:
Use code: no code distribution protection, motor protection have to "2".
Release mode and accessories code (see Table 1)
Poles: Four-pole, three-pole four-wire

three, YDZ20L leakage circuit breaker accessory code

overcurrent
Release Information
Attachment Name
without attachments shunt release auxiliary contacts undervoltage release auxiliary contact
Shunt release
auxiliary contact
Undervoltage release
instantaneous release 200 210 220 230 240 270
double release 300 310 320 330 340 370
NOTE: 240.340.270.370 applies only quadrupole product.

four, YDZ20L leakage circuit breakers normal operating conditions and installation conditions

◆ The ambient air temperature
. a maximum ambient air temperature does not exceed + 40 ℃;
. b average of 24 hours within the ambient air temperature does not exceed + 35 ℃;
. c ambient air temperature limit is not lower than -5 ℃;
Note: If the user leakage circuit breakers temperature have special requirements, in consultation with the manufacturer.
◆ Altitude: not more than 2000 meters.
◆ atmospheric conditions: relative humidity of the atmosphere around + 40 ℃ maximum temperature does not exceed 50%; at lower temperatures can have a higher relative humidity, the monthly average maximum relative humidity of wettest month was 90%, while the month The monthly average minimum temperature does not exceed + 25 ℃, and taking into account the temperature changes on the surface of condensation.
◆ Pollution Degree: III.
◆ installation conditions:
◇ leakage circuit breaker should be provided in accordance with the manufacturer's instruction manual installation requirements for installation. The terminals connected to the supply side, under the terminals connected to the load side, and the vertical gradient of not more than 5 °, and can not be installed in places subject to shock and vibration and rain and snow.
◇ Installation Category: III.
◇ external magnetic field: leakage circuit breaker is installed close to the external magnetic field sites, should not exceed 5 times the earth's magnetic field in any direction.

five, YDZ20L leakage circuit breaker main parameters and technical performance

1, basic parameters CM1L MCCB
Type frame degree
Rated current
(Inm) A
Rated
Voltage
(Un) V
Rated
Frequency
(Hz)
Poles Rated
Current
(In) A
Rated residual
Operating current
(I △ n) mA
Rated residual
Hold Current
(I △ no) mA
Residual Current
Action time (s)
YDZ20L-160 160 380 50 3P + N
4P
50,63,
80,100,
125,160
50 25 general type (see Table 3)
Delay type (see Table 4)
100 50
200 100
YDZ20L-250 250 380 50 3P + N
4P
100,125,
160,180,
200,225,250
50 25 general type (see Table 3)
Delay type (see Table 4)
100 50
200 100
300 150
YDZ20L-400 400 380 50 3P + N
4P
200,250,
315,350,400
100 50 general type (see Table 3)
Delay type (see Table 4)
200 100
300 150
500 250
YDZ20L-630 630 380 50 3P + N
4P
400,
500,630,
100 50 general type (see Table 3)
Delay type (see Table 4)
200 100
300 150
500 250
NOTE: Third gear adjustable residual operating current freedom of choice by the user.

★ general leakage breaker breaking time
applying current I △ n 2I △ n 5I △ n
breaking time (s) ≤0.2 ≤0.1 ≤0.04

★ delay leakage circuit breaker breaking time
predetermined delay time I △ n 5I △ n
0.2s & lt; 0.4s 0.1 ~ 0.24s
0.4s & lt; 0.6s 0.2 ~ 0.44s
0.8s & lt; 1.0s 0.4 ~ 0.84s

★ rated ultimate short circuit breaking capacity and rated residual making and ability
Type Rated ultimate short-circuit breaking capacity (Icu) Rated residual making and breaking capacity (I △ m) arcing distance
(Mm)
AC380V AC220V
RMS kA COSφ RMS kA COSφ
YDZ20L-160 12 0.3 3 0.9 ≤60
YDZ20L-250 15 0.3 4 0.8 ≤60
YDZ20L-400 20 0.3 5 0.7 ≤80
YDZ20L-630 20 0.3 5 0.7 ≤80
Note: The rated short-circuit breaking capacity Ics = 0.5Icu.

◆ Shunt release:
◇ rated control supply voltage: AC220V, 380V, DC24V, 110V, 220V.
◆ Residual Current Operating Characteristic:
◇ Under normal operating conditions, the leakage breaker residual operating current of less than or equal to the rated residual operating current, and greater than the rated
◆ residual non-operating current
◇ leakage circuit breakers with the main power as an auxiliary power source, the requirements of normal operation leakage circuit breaker between 0.85 ~ 1.1Un.
◆ overcurrent release disconnect feature:
◇ overcurrent release disconnect feature (see table) under short circuit conditions;
◇ overcurrent release off characteristics under overload inverse of
When the ambient air temperature is + 40 ℃, the power distribution leakage circuit breakers in overcurrent release energized at the same time each pole, inverse time operating characteristic disconnect
◆ clearances and creepage distances:
CLEARANCE leakage circuit breaker is not less than 5.5mm; creepage distance of not less than 9mm.

Inm A operating current value accuracy setting value of
160,250,400,630 10In ± 20%


test current Title Tuning
Current multiple
test time (h) initial state
In≤63A 63A 225A
conventional non-tripping current 1.05 ≥1 ≥2 ≥2 cold start
Conventional tripping current 1.30 & lt; 1 & lt; 2 & lt; 2 Hot start
return characteristics of the current 3.0 Return Time (s) cold start
5 8 12

★ mechanical and electrical life (see table)
Inm A operating cycles per hour operating cycles The total number of
powered no power
160,250 120 1000 7000 8000
400,630 60 1000 4000 5000

★ size table manually operated mechanism mounted.
Type DZ20Y, J, G-100 DZ20Y, J, G-225 DZ20Y-400 DZ20J, G-400
DZ20Y, J-630
Installation dimensions H 55 85 105 80
center operating handle with respect to the circuit breaker X value 0 0 0 0

Internal accessories ◆ leakage circuit breakers (leakage circuit breakers need to install internal accessories based on user)
◇ shunt trip
Shunt release Rated control supply voltage: AC50Hz, 220V, 380V; DC24V, at 70% to 110% of rated control supply voltage leakage circuit breakers reliably disconnect.
NOTE: When the selection voltage specifications DC24V, rated current should ≥4.5A.
◇ undervoltage release
When the voltage drops (or even slow decline) to 70% and 35% of rated voltage, under-voltage release shall operate; less than 35% at the time of release of the rated voltage, the undervoltage release should be able to prevent leakage breaker is closed; when the power supply voltage is equal to or greater than 85%, the undervoltage release should ensure reliable leakage circuit breaker is closed.
Undervoltage release is rated: AC50Hz, 220V, 380V.
Reminder: equipped with undervoltage release leakage breaker, only to pass to the undervoltage release at the rated voltage, leakage circuit breakers in order to carry out the closing operation, otherwise it may damage the leakage circuit breaker!
◇ auxiliary contacts
Auxiliary contacts leakage circuit breakers rated
Rated current
Rated current
frame degree rated current
lnm (A)
Conventional thermal current
lth (A)
AC 380V when le (A) AC 220V when le (A)
≤225 3 0.26 0.14
≥400 6 3 0.2

six, YDZ20L series leakage circuit breakers Additional information

◆ classification
◇ divided by the number of poles:
. a four-pole leakage circuit breakers;
b. three-pole four-wire leakage circuit breaker.
◇ Press residual current breaking time points:
. a general type;
b. time delay.
◇ Press residual operating current points:
. a residual operating current not adjustable;
b. Adjustable residual current (third).
◆ structure and working principle
◇ structure:
YDZ20L leakage circuit breaker current action electronic leakage protection circuit breaker. The main components are: the main switch, zero-sequence current transformer, electronic amplification components, leakage release, the test device. All components are mounted in a plastic housing.
◇ works:
When appears or power supply protection circuit overload or short circuit, the main switch of the double release completion delay or instantaneous tripping, thereby cutting off the power play or short circuit overload protection. When the protection circuit leakage or physical shock, as long as the residual current reaches the setting operating current value, the secondary winding zero sequence current transformer outputs a signal, and by leakage release action, thereby cutting off the power, and start the drain electric shock protection.

Seven, shape and installation dimensions

Type Poles Dimensions (mm) Installation dimensions (mm)
A B C D H1 H2 H3 H4 L L1 L2 L4 W1 W2 W3 a b φd
YDZ20L-160 3P + N & nbsp;
4P
143 ± 2.0 225 ± 2.3 104.5 ± 1.75 88.5 ± 1.75 2.5 3.5 41 24 267 - 38 112 35 32 14.5 70 ± 0.37 204 ± 0.75 -
YDZ20L-250 3P + N & nbsp;
4P
144 ± 2.0 276 ± 2.6 141 ± 2.0 110 ± 1.75 6 3.5 22 22 330 - 47 112 35 34 17.5 70 ± 0.37 204 ± 0.75 -
YDZ20L-400 3P + N & nbsp;
4P
206 ± 2.3 360 ± 2.85 149 ± 2.0 117 ± 1.75 4.5 3.5 39 39 472 442 37.5 110 51 52 30 102 ± 0.435 324 ± 0.70 -
YDZ20L-630 3P + N & nbsp;
4P
280 ± 2.6 360 ± 2.85 149 ± 2.0 116 ± 1.75 4.5 3.5 41 41 460 430 46.5 55 70 59 35 140 ± 0.435 324 ± 0.70 -

Eight, ordering instructions

When ordering indicate the following points:
Product type and name: If YDZ20L MCCB -400/3300
Instantaneous tripping Current Rating: such as 630A.
Breaker attachment names, specifications, combination code, adopted when the undervoltage release and shunt trip, should indicate the operating voltage (or control supply voltage) value;
Poles: 3P + N
Order number: as 380.
Ordering example: YDZ20L -400/3300,4P, AC380V, 400A, 350 只.

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