Hello,Welcome Libaijia Electric Technology Co.,Ltd Website!
中文網站86-577-61670617
Monday to Saturday morning at 12:00-17:00
Email:[email protected]
PRODUCTS
Home -products-DZ20LE-225/4300 Molded case circuit-breaker
  • product name : DZ20LE-225/4300 Molded case circuit-breaker
  • product brand : LBAJI
  • Place of Origin : CHINA
  • E-mail : [email protected]
  • Online Contact :
Detailed Instruction

Scope of Application

DZ20L series leakage circuit breaker (hereinaften referred to as leakage circuit breaker) is mainly applied to provide protection for power distribution lines of AC50Hz, rated voltage 380V, rated current up to 630A against electrical shock and leakage. It can prevent fire hazard caused by destruction of insulation and earth fault. It can also used to distribute power energy or provide overload & short circuit protection for lines and electrical equipment. Moreover, DZ20L can used for infrequent switching in lines. Besides, derivative products of DZ20L series residual current circuit breaker have leakage alarm function without tripping, which can applied for UPS( uninterruptible power supply).
The products are in conformity with such Standard as GB 14048.2. and IEC60947.2

Ⅲ. Accessory code

Over-current tripping type

Accessory name


No accessory

Shunt release

Auxiliary contact

Under-voltage tripper

Auxiliary contact
shunt release

Auxiliary contact under-voltage tripper

Instantaneous tripper

200

210

220

230

240

270

Complex tripper

300

310

320

330

340

370

Note: 240.340.270.370 are only applicable to 4 pole products.


Ⅳ. Applicable Operation Environment

◆ Ambient temperature: -5℃~+40℃. The average temperature per day should less than 35 degrees Celsius. (For any special requirement over this, please contact the manufacturer) .

◆ Altitude: ≤2000m

◆ The air relative humidity is less than 50% at the highest +40℃ at installation site. Higher RH is allowed at lower temperature. Like the RH can reach to 90% at 25℃. Special measures shall be taken when condensation occurs due to occasional temperature change.

◆ Pollution degree: Class III.

◆ Installation condition

◇ The circuit breaker should be mounted according to installation requirements of operation instruction offered the manufacturer. The upper terminal should be connected with mains side, while the lower terminal with load side.
Besides, the mounting tilt angle against vertical surface should be less than 5°. Ensure, there is no distinct shake and impact at the installation site. The installation should be away from any invasion of rain or snow.

◇ Installation class: Class III
◇ The foreign field value of the mounting location (in all directions) should no more five times than that of geomagnetic field.


Ⅴ. Main Parameters and Technical Performance

1.Basic parameters of DZ20L MCCB

Model

Frame size current (Inm)A

Rated voltage
(Un)V

Rated frequency
(Hz)

Poles

Rated current
(In)A

Rated residual current
(I△n)mA

Rated residual non-operating current
(I△no)mA

Residual current operatoin time (s)

DZ20L-160

160

380

50

3P+N
4P

50、63、
80、100、
125、160

50

25

Normal type see Fig 3.

Delay type see Fig 4.

100

50

200

100

DZ20L-250

250

380

50

3P+N
4P

100、125、
160、180、
200、225、250

50

25

100

50

200

100

300

150

DZ20L-400

400

380

50

3P+N
4P

200、250、
315、350、400

100

50

200

100

300

150

500

250

DZ20L-630

630

380

50

3P+N
4P

400、
500、630、

100

50

200

100

300

150

500

250

Note: Adjustable 3 position residual operating current can be chose by users.

  • General type residual current circuit breaker breaking time

Imposed current

I△n

2I△n

5I△n

Breaking time (s)

≤0.2

≤0.1

≤0.04

  • Delay type residual current circuit breaker breaking time

Setting delay time

I△n

5I△n

0.2s

<0.4s

0.1 ~ 0.24s

0.4s

<0.6s

0.2 ~ 0.44s

0.8s

<1.0s

0.4~ 0.84s

  • Rated ultimate short-circuit breaking capacity & rated residual switching on and breaking capacity

Product type

Rated ultimate short-circuit breaking capacity (Icu)

Rated residual switching on and breaking capacity (I△m)

Flashover distance
(mm)


AC380V

AC220V



Effective value kA

COSφ

Effective value kA

COSφ


DZ20L-160

12

0.3

3

0.9

≤60

DZ20L-250

15

0.3

4

0.8

≤60

DZ20L-400

20

0.3

5

0.7

≤80

DZ20L-630

20

0.3

5

0.7

≤80

Note: rated short circuit breaking capacity Ics=0.5Icu.

◆ shunt release:
◇ rated control supply voltage:AC220V、380V,DC24V、110V、220V。
◆ residual current operating characteristics:
◇ under normal working conditions, residual operating current of the circuit breaker is no more than its rating value, but more than its rated residual non-operating current.
◇ residual current circuit breaker is used as auxiliary power supply for main power. The circuit breaker need to operate normally with the voltage of 0.85~ 1.1Un.
◆ breaking characteristics of over-current tripper:
◇ breaking characteristics of over-current tripper in case of short circuit. (see below table).

◇ breaking characteristics of over-current tripper in case of overload inverse time.

(At +40℃ ambient air temperature, inverse time breaking characteristics of residual current circuit breaker for power distribution when all poles of over-current tripper are energized.)
◆ electric clearance and creep distance:
Its electric clearance is no less than 5.5mm;creep distance: no less than 9mm.

Inm A

Setting operating current

Ratting accuracy

160、250、400、630

10In

±20%


Test current name

Setting multiple of current

Test time(h)

Initial state

In≤63A

63A

225A

Conventional non-tripping current

1.05

≥1

≥2

≥2

Cold state

Conventional tripping current

1.30

<1

<2

<2

Thermal state

Return current

3.0

Return tme(s)

Cold state

5

8

12

  • Electrical and mechanical life(see below form)

Inm A

Operating cycles per hour

Operating cycle

Total cycle

Power on

Power off

160、250

120

1000

7000

8000

400、630

60

1000

4000

5000


Installation dimension of manual operating mechanism (see below form)

Product type

DZ20Y、J、G-100

DZ20Y、J、G-225

DZ20Y-400

DZ20J、G-400
DZ20Y、J-630

Installation dimension H

55

85

105

80

Distance between operating handle and center of circuit breaker X value

0

0

0

0

◆ Internal accessory of RCCB (installed according to users’ requirements)
◇ shunt release
rated control supply voltage: AC50Hz,220V,380V;DC24V. When the voltage is 70%~110% of rated control supply voltage, shunt release tripping.
Note:When voltage value is DC24V, rated current should ≥4.5A.

◇ under-voltage tripper.

When the voltage reduces to 35%~70%,, under-voltage tripper will automate break. When the voltage is less than 35%, the tripper should avoid the closure of circuit breaker. While if the voltage is no less than 85%, the closure of circuit breaker should be ensured.
Rated operating value: AC50Hz,220V、380V。
Note: we can close RCCB only when under-voltage tripper is imposed with rated voltage. Or the RCCB may be damaged.

◇ auxiliary contact
rating value of auxiliary contact

Frame size current
lnm (A)

Conventional thermal current
lth (A)

Rated current at AC 380V le (A)

Rated current at AC 220V le (A)

≤225

3

0.26

0.14

≥400

6

3

0.2


Ⅵ. Other Information
◆ classification
◇ According to poles:
a. 4 pole
b. 3 pole 4 wire
◇ According to residual current breaking time:
a. normal type;
b. delay type.
◇ According to residual operating current:
a. nonadjustable;
b. adjustable (3 position)

◆ Structure and operating principle
◇ Structure:
DZ20LRCCB mainly consists of main switch, zero sequence current transformer, PCB, leakage tripper, testing apparatus, etc. All parts are mounted in a plastic enclosure. ◇ Operating principle: Complex tripper(thermal electromagnetic tripper) will complete delay or instantaneous tripping operation to cut off power supply and provide protection for lines and electrical equipment against overload and short circuit. When residual current occurs in lines, reaching to its rated tripping value, secondary winding coil of zero sequence current transformer will output a signal, which will drive the leakage tripper operating and cut off the power supply. So it can provide protection against leakage current and electrical shock.

Outline & installation size


Type Pole Outline siez installation size
L1 L2 L3 L4 a b Φd
DZ20LE-160 3 108±1.75 225±2.3 105±1.75 90±1.75 35±0.31 240±0.57 Φ4.3~Φ4.6
4 143±2.0 225±2.3 105±1.75 90±1.75 70±0.37 204±0.57 Φ4.3~Φ4.6
DZ20LE-250 3 109±1.75 276±2.6 143±2.0 143±2.0 35±0.31 240±0.65 Φ4.3~Φ4.6
4 144±2.0 276±2.6 143±2.0 143±2.0 70±0.37 240±0.65 Φ4.3~Φ4.6
DZ20LE-400 3 155±2.0 360±2.85 150±2.0 150±2.0 51±0.37 324±0.7 Φ7~Φ7.3
4 206±2.3 360±2.85 150±2.0 150±2.0 102±0.43 324±0.7 Φ7~Φ7.3
DZ20LE-630 3 210±2.3 360±2.85 150±2.0 150±2.0 70±0.37 300±0.7 Φ7~Φ7.3
4 280±2.6 360±2.85 150±2.0 150±2.0 140±0.43 300±0.7 Φ7~Φ7.3
下载娱网棋牌大连滚子 山西快乐10分钟开奖查询 通达策略配资 山东11选五胆拖表 信誉棋牌评测网推荐 辽宁11选5快速看号方法 吉林快三是国家彩票吗 福彩河北20选5 广东快乐十分新规则 2020生肖号码波色表图 股票价格下跌