ndm2z series - moki, s.r.o. · pdf file03 04 altitude: ≤2000m ambient temperature: -5℃ ~...

Shanghai Liangxin Electrical CO.,LTDAddress: No. 668 Heng An Road, Pu Dong New District, Shanghai Zip: 200137Tel: 86-21-50412789Fax: 86-21-58675966E-mail: [email protected]

As standards, specifications and designs changefrom time to time, please ask for confirmationof the information given in this publication.

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NDM2Z SeriesDC Molded Case

Circuit Breaker

2010.07

NDM2Z SeriesDC Molded CaseCircuit Breaker

SummaryApplication

NDM2Z Series DC MCCB030405060708080809

Working ConditionModel and ImplicationMain SpecificationsTripping CurveAccessory CodeWiring CapacityPower ConsumptionTemperature Derating Dimension

NDM2ZB Series DC MCCB19202122232324242425

Model and ImplicationWorking ConditionMain SpecificationsTripping Characteristics Accessory CodeTemperature DeratingPower ConsumptionWiring CapacityWiring MethodDimension

35353637373839404143

Mounting IllustrationAuxiliary ContactAlarm ContactUndervoltage ReleaseShunt ReleaseMechanical InterlockHandle Padlocking DeviceMotor OperatorHandle Operating MechanismInterlock

Accessory

Leading Low-voltage Electrical Component Manufacturer

NDM2Z Series DC Molded Case Circuit Breaker (hereinafter "DC

MCCB") includes NDM2Z type and NDM2ZB type.

NDM2Z type and NDM2ZB type DC MCCBs are suitable for power distribution, circuit and equipment protection in DC circuit, of which rated operational voltage is up to DC250V and rated current is up to 630A, with the function of overload and short circuit protection. Besides that, NDM2ZB type MCCB has short-time short-circuit protection function.

03 04

Altitude: ≤2000mAmbient temperature: -5℃ ~ +40℃The relative humidity of the air does not exceed 50% at the temperature of +40℃. Higher relative humiditymay be permitted at lower temperatures, such as 90% at 20℃. Special measures may be necessary in caseof occasional condensation due to variations in temperature. Resisting the effects by humid air.Resisting the effects by salt mist and oil mist.Resisting the effects by mildew.Installation category III for main circuit, category II if not.Pollution degree: 3Service place without explosive media, gas and dust which are corrosive and conductive.Be mounted from rain nor snow.Users should negotiate with the manufacturer in advance if the working conditions are worse than above.

Model and Implication

No. Implication

MCCB

No code: Direct handle operation

P: Motor operation Z: Rotary handle operation

Please refer to Accessory Code Table

0: Frame only, w/o trip unit (may be used as disconnect switch to connect bus)2: Magnetic only 3: Thermal magnetic

Please refer to Main Specifications Table

No code: Fixed type

P: With extended front termination kits

K: Frame type connection (only for NDM2Z-125 and NDM2Z-250)

JK: Frame type connection only for leading-in terminal

CK: Frame type connection only for leading-out terminal

H: Rear connection

Z1: Rear plug-in connection

Z2: Front plug-in connection

J: With mechanical interlock device

Brand code

Product code

Design code

Utilisation code

Frame size

Operation method

Number of poles

Trip unit

Accessory code

Rated current

Connection type

2, 3

63, 125, 250, 400, 630

NDM2X(B) Series DC Molded Case Circuit Breaker

IEC 60947-1, IEC 60947-2, GB/T 14048.1GB 14048.2.TüV, CE, DIN, CCC.

Standards and Certificates

Working Condition

NDM2Z Series DC MCCB

Z: DC application ZX: Small base DC application (only for frame size of 125A)

11

11

Main Specifications

Tripping Curve

s

Note: Iop -- Tripping current of trip unit top -- Tripping time of trip unit

Type Number

of poles

8002,3

2,3

2,3

2,3

2,3

10, 12.5,16, 20,25, 32,40, 50, 63

16, 20, 25,32, 40, 50,63, 80,100, 125

125, 160, 180, 200, 225, 250

225, 250, 315, 350, 400

400, 500, 630

800

800

800

800

Frame size

(A) Inm

Rated current

(A) In

Rated insulation voltage (V) Ui

Rated operational voltage

(DC V) UeEndurance

Rated ultimate breaking

capacity (kA) Icu/ Time

constant (ms)

Rated operating short-circuit breaking

capacity (kA) Ics/ Time

constant (ms)

05 06

(w/loads)

(w/loads)

(w/loads)

(w/loads)

(w/loads)

(w/o loads)

(w/o loads)

(w/o loads)

(w/o loads)

(w/o loads)

07 08

Accessory Code

Wiring Capacity

Power Consumption

Temperature Derating

Note: Measured under the relative rated current.

(Marine (Marine (Marine (Marine (Marine Derating Coefficient (In)

Type

Type

Direct Heated

Direct Heated

Direct Heated

Indirect Heated

Indirect Heated

Indirect Heated

Indirect Heated

Indirect Heated

Indirect Heated

Total Power Consumption of Three Poles (W)Total Power Consumption of Two Poles (W)Front/Rear Connection

Rear Plug-in Connection

Rear Plug-in Connection

Front Plug-in Connection

Front Plug-in Connection

Front/Rear Connection

Current (A)

Min.Min.

Min.

Min.Min.

Min.

Min.

Max.Max.

Max.Max.

Max. Max.Max.Cable or Cooper Bar

Frame Type

Connection

Code Name

Undervoltage Release, Single Auxiliary Contact and Alarm Contact

Double Auxiliary Contact, Single Auxiliary Contact and Alarm Contact

(not available for NDM2Z-63)

Two Sets Single Auxiliary Contact

Double Auxiliary Contacts and Single Auxiliary Contact

Undervoltage Release and Double Auxiliary Contact

Undervoltage Release and Single Auxiliary Contact

Alarm Contact

Shunt Release and Alarm Contact

Double Auxiliary Contact and Alarm Contact

Undervoltage Release and Alarm Contact

Shunt Release, Single Auxiliary Contact and Alarm Contact

Single Auxiliary Contact and Alarm Contact

No Accessory

Shunt Release

Double Auxiliary Contacts

Single Auxiliary Contact

Undervoltage Release

Shunt Release and Double Auxiliary Contacts

Shunt Release and Single Auxiliary Contact

Shunt Release and Undervoltage Release

Two Sets Double Auxiliary Contacts (No right mounting Double Auxiliary

Contacts for NDM2Z-63.)

Type

Number of Poles

Mounting Position

Application +45℃) Application +50℃) Application +55℃) Application +60℃) Application +65℃)

Note: Only front connection type for NDM2X-125 series DC MCCB.

Dimension

NDM2Z-63 Dimension

Front connection (2P, 3P)

Rear connection (2P, 3P)

Rear plug-in connection (2P, 3P)

Front plug-in connection (2P) X-X, Y-Y are the centre of MCCB

Insulating plate

X-X, Y-Y are the centre of 3P MCCB

Dimensions of plug-in base


Aperture dimension of the subpanel, rear connection

Aperture dimension of the subpanel, front connection


Unde

rvol

tage

relea

se

09 10

165

222

M4

NDM2ZX-125 Small Base (2P) Dimension Rear connection (2P, 3P)

Dimension of plug-in base




A direction

X-X, Y-Y are the centre of 3P MCCBAperture dimensions of the subpanel, rear connectionFront connection (2P)

NDM2Z-125 Dimension


Aperture dimensions of the subpanel, front connection

11 12


Unde

rvolta

ge re

lease

Extended front terminal kits (optional)

NDM2Z-250 Dimension




Front plug-in connection (2P)


X-X, Y-Y are the centre of MCCB

Dimensions of plug-in baseX-X, Y-Y are the centre of 3P MCCB

Aperture dimensions of the subpanel, rear connection



Unde

rvol

tage

relea

se

13 14

5

5.5

3510 89

58

54 (m

in)

88 (m

ax)

54 (m

in)

54 (m

in)

NDM2Z-400 Dimension


Rear plug-in connection (2P, 3P) X-X, Y-Y are the centre of 3P MCCB






Rear connection (2P, 3P) X-X, Y-Y are the centre of 3P MCCB


Unde

rvol

tage

relea

se

15 16

65(m

in)

A direction

NDM2Z-630 Dimension










Unde

rvol

tage

relea

se

17 18

NDM2ZB Series DC MCCB with Three-stage Protection Function

Model and Implication

Working Condition

19 20

No. Implication

DC MCCB with short-time short-circuit protection

63, 125, 250, 400, 630

No code: Direct handle operation

P: Motor operation Z: Rotary handle operation

Magnetic trip unit + short-time delay trip unit

Thermal magnetic trip unit + short-time delay trip unit

Please refer to Table 3.

MCCB

Altitude: ≤2000m

Ambient temperature: -5℃ ~ +40℃

The relative humidity of the air does not exceed 50% at the temperature of +40℃.Higher relative humidity may be permitted

at lower temperatures, such as 90% at +20℃. Special measures may be necessary in case of occasional condensation due to

variations in temperture.

Resisting the effects by humid air.

Resisting the effects by salt mist and oil mist.

Resisting the effects by mildew.

Installation category III for main circuit, catagory II if not.

Pollution degree: 3.

Service placeut explosive media, gas and dust which are corrosive and conductive.

Be mounted from rain nor snow.

Users should negotiate with the manufacturer in advance if the working conditions are worse than above.

Reverse feeding is not allowed. Insulating test between leading-in terminals is forbidden.

2, 3

12

Please refer to Main Specifications Table.

No code: Fixed type

P: With extended front termination kits

K: Frame type connection (only for NDM2ZB-125 and NDM2ZB-250)

JK: Frame type connection only for leading-in terminal

CK: Frame type connection only for leading-out terminal

H: Rear connection

Z1: Rear plug-in connection

Z2: Front plug-in connection

J: With mechanical interlock device

Brand code

Product code

Design code

Utilisation code

Frame size

Operation method

Number of poles

Trip unit

Accessory code

Rated current

Connection type

Short-time delay12

21 22

Main Specifications

Tripping Characteristics

Tripping Curve

Note:1. Ii can be selected between 12In-20In.2. Is can be selected between 4In-10In.3. t is the delay time added on to provide selective protection. It's not the interrupting time.

Type

Instantaneous tripping current Ii

Type Number

of poles

Frame size

(A) Inm

Rated current

(A) In

Rated insulation voltage (V) Ui

Rated working voltage

(DC V) UeEndurance

(2 poles in series)

(2 poles in series)

(3 poles in series)

(2 poles in series)

(3 poles in series)

(2 poles in series)

75(3 poles in series)

(2 poles in series)

75(3 poles in series)

(3 poles in series)

Rated ultimate breaking

capacity (kA) Icu/ Time

constant (ms)

Rated operating short-circuit breaking

capacity (kA) Ics/ Time

constant (ms)

40, 50, 63

40, 50, 63,80, 100, 125

125, 160, 180, 200, 225, 250

225, 250, 315, 350, 400

400, 500, 630

2,3

2,3

2,3

2,3

2,3

s

Note: Iop -- Tripping current of trip unit top -- Tripping time of trip unit

(w/loads)

(w/loads)

(w/loads)

(w/loads)

(w/loads)

(w/o loads)

(w/o loads)

(w/o loads)

(w/o loads)

(w/o loads)

Tolerance for settingvalue of short-time

short-circuit tripping time

Setting value of short-time short-circuit

tripping time (ms) t

Short-time short-circuittripping current Is

24

Accessory Code

Code Name

TypeNumber

of Poles

Mounting Position

No Accessory

Shunt Release

Double Auxiliary Contacts

Single Auxiliary Contact

Alarm Contact

Single Auxiliary Contact and Alarm Contact

Power Consumption

Wiring Capacity

Type

Min.Min.

Min.

Min.

Min.

Min.Min.

Max.Max.

Max.

Max.

Max.

Max.Max.Cable or Cooper Bar

Frame Type Connection

Temperature Derating

Wiring Method

2 poles wiring

Line

Load Load

Please consult with the manufacturer if other wiring method is adopted.

Load

Line Line

3 poles wiring

Derating Coefficient (In)

Type

Indirect Heated

Indirect Heated

Indirect Heated

Direct Heated

Indirect Heated

Indirect Heated

Indirect Heated

Total Power Consumption of Three Poles (W)

Front/Rear Connection Rear Plug-in Connection Front Plug-in ConnectionCurrent

(A)

(Marine Application +45℃)





23

Note: Measured under the relative rated current.

NDM2ZB-63 Dimension

Dimension









Und

ervo

ltage

re

leas

e

(2P)(3P)

(2P)

A direction

(3P)

(2P)

(2P)

(3P)

(3P)

Insulating plate

2625

165

222

M4

NDM2ZB-125 Dimension



Insulating plate

Und

ervo

ltage

re

leas

eX-X, Y-Y are the centre of 3P MCCB






(2P)

(3P)

(2P)

(3P)

(2P)

(2P)

(2P)

(2P)

(3P)

(3P)

A direction

2827


Front connection (2P, 3P) X-X, Y-Y are the centre of 3P MCCB







Und

ervo

ltage

rele

ase

(2P)

(3P)

(2P)

(2P)

(2P)

(2P)

(3P)

(3P)

A direction

3029

5

5.5

3510 89

59

54(m

in)

54(m

in)

54(m

in)


Front connection (2P, 3P) X-X, Y-Y are the centre of 3P MCCB





Und

ervo

ltage

rele

ase


(2P)

(3P)

(2P)

(2P)

(2P)

(2P)

(3P)

(3P)



(2P)

(3P)

A direction

3231




Und

ervo

ltage

rele

ase








(2P)(3P)

(2P)

(3P)

(2P)

(2P)

(3P)

(3P)

(2P)

A direction

3433


Accessory

Mounting Illustration

Alarm Contact

Legends

Auxiliary Contact and Its Combination

Specifications of Auxiliary Contact Wiring Schematic of Auxiliary Contact

Current Parameters

Electrical Endurance of Auxiliary Contact

Making and Breaking Capacity of Auxiliary Contact

Alarm Contact and Its Combination

Wiring Schematic of Alarm Contact

MCCB in "OFF" or "ON" position

MCCB in "FREE TRIP" position

The conventional thermal current of alarm contact is 3A, and the rated operational current is 0.3A under the rated working voltage of AC400V.

Alarm contact will not operate when DC MCCB operates normally. Only when a free trip or tripping due to defect occurs, the contacts will alternate. And the alarm contact is reset when DC MCCB is re-latched.

Alarm Contact Ue=220V, Ith=3A

Frame Size

Making BreakingUtilisation Categpry

OperatingFrequency(times/h)

Duration under

CurrentTimes

Making BreakingUtilisation Categpry

OperatingFrequency(times/h)

Duration under

CurrentTimes

Conventional Thermal Current Ith

Rated Current under AC 400V

MCCB in "OFF" or "FREE TRIP" position

Double auxiliary contacts

Single auxiliary contact

MCCB in "ON" position

Right mounting

Single auxiliary contact

Double auxiliary contacts

Alarm contact

Shunt Release

Undervoltage release

Handle

Left mounting

Auxiliary contact

3635

Power Supply

Turned-onloop

Turned-offloop

Undervoltage Release

Mechanical Interlock

Shunt release

Wiring Schematic of Undervoltage Release

Instantaneous Tripping Current and Power Consumption of Shunt Release

Dimension

Instantaneous Tripping Current and Power Consumption of Undervoltage Release

Wiring Schematic of Shunt Release

Power supply

Power supply

Between 35%~70% of rated control voltage, undervoltage

release should operate in security and trip DC MCCB. When

under 35% of rated voltage, it should prevent DC MCCB

from closing. DC MCCB closing is possible only if the power

supply voltage is no less than 85% of rated voltage.

Attention: Only undervoltage release be energized in

advance, DC MCCB can be closed or re-latched. Otherwise,

DC MCCB may be damaged.

Between 70%~110% of rated control voltage, shunt release should trip DC MCCB in security under any operating conditions.

Note: Below shunt controlling loop design is recommended when the power of the controlling loop is DC 24V.KA stands for the relay in DC 24V controlling loop. The current capacity of its contract is 1A.

Control voltage:

Control voltage:

TypeInstantaneous Tripping Current (mA) Power Consumption (W)

Type

Type Note

For

For

For

For

For

For

For

For

For

For

A Switch B Switch

Instantaneous Tripping Current (mA) Power Consumption (W)

3837

NDM2Z-63NDM2ZB-63 2PNDM2Z-125NDM2ZB-125 2P

NDM2ZB-63 3P

NDM2Z-250NDM2ZB-250 2PNDM2Z-400NDM2ZB-400 2PNDM2Z-630NDM2ZB-630 2P

NDM2ZB-400 3P

NDM2ZB-125 3P

NDM2ZB-250 3P

NDM2ZB-630 3P

P1 P2

Power supply

Handle Padlocking DeviceMounting Diagram of MS1 Handle Padlocking Device

Motor Operator

Wiring Schematic

Specifications of CD2 Motor Operator

Matching DC MCCB Type Tripping Current

(A)

Motor Power

(W)

Endurance

(times)

Operation Device

Height (mm) H

Power

Input power

ON

OFF

Control circuit

External accessory wiring diagram is shown in

dashed frame

CD2 Motor Operator

Dimension

Mounting Diagram of MS2 Handle Padlocking Device

Type

MS2 Handle Padlocking Device

Handle of DC MCCB

Mounting the lock here

MS1 device, which incorporated

the circuit breaker with mounting

screws, is integrated handle

padlocking device preventing

mis-operation. It is currently for

frame size of 125 and 250 only.

Please refer to left diagram and

below table for installation

dimension. (DC MCCB is shown in

dashed frame)

Code illustration:SB1, SB2: Operation button (prepared by user)X: Wiring teriminalP1, P2: Input power

Voltage:

MS2 device, which mounting on the side of DC MCCB, is split type handle padlocking device preventing

mis-operation. Please refer to below diagram for installation dimension. (DC MCCB is shown in dashed

frame)

4039

Handle Operating Mechanism

Cutouts Sketch Map for Installation of CS1-A Handle Operating Mechanism

Cutouts Sketch Map for Installation of CS1-F Handle Operating Mechanism

Cutouts Sketch Map for Installation of CS2-F Handle Operating Mechanism

Installation Methord and Dimensions

External Accessories

HandleOperating

Mechanism

Matching MCCB

Metal Plastic

InstallationMethod

Vertical

Vertical

Vertical

Horizontal

Horizontal

Vertical

Manual Installation Dimensions ( mm )Model of External

Accessories

Cutouts Sketch Map for Installation of CS2-A Handle Operating Mechanism

Note: A is for round handle F is for quadrate handle

DC MCCB

or

or

or

Hinge

DC MCCB

or

Hinge

axis

4241

Interlock

Application

Dimension

Left rail

Handle of MCCB

Dimension Note

For

For

250 Type

630 Type

Supporting bracket Locating element 1 Right rail Slide block Fastening screw

Padlock position

Locating element 2

Operation Instruction

This interlock, which can be applied on the front of every two DC MCCBs, can

prevent simultaneous closing of every two DC MCCBs. It is simply in

construction and easily for operating. It can also be equipped with padlock.

Adjust the location of the rail to make sure one DC MCCB is OFF, and then

fasten the screw avoiding the other DC MCCB's operating way.

The rail can be adjusted and fasten by a padlock with locating element 1 and

2. (Padlock should be prepared by user. Locating element can be ordered as

accessory with DC MCCB.)

Interlock should be fasten on the mounting plate and the supporting bracket.

4443

2- A×B

H1

H2

H1

47

75

H2

25

33

A

6.5

9

B

10

12.5

ndm2z series - moki, s.r.o. · pdf file03 04 altitude: ≤2000m ambient temperature: -5℃ ~...

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