ST UBLI MC4-Evo 2 Connector Set 4-6mm² Instruction Manual

ST UBLI MC4-Evo 2 Connector Set 4-6mm²

Intended use

Branch connectors MC4-Evo 2 are used to connect two MC4/ MC4-Evo 2 plugs or two MC4/MC4-Evo 2 sockets in parallel. For this purpose, each branch connector has a total of three terminals.

Safety instructions

Importance of the assembly instructions
NOT following the assembly and safety instructions could result in life- threatening injuries due to electric shock, electric arcs, fire, or failure of the system.

• Follow the entire assembly instructions.
• Use and install the product only according to the assembly instructions and the technical data.
• Safely store the assembly instructions and pass them on to subsequent users.

Intended use

The connector electrically connects components within the DC circuits of a photovoltaic array. The connector can be used for purposes other than those in a photovoltaic array, e.g., as an LVDC component. If the component is used for other purposes, then the requirements and specifi cations may be diff erent from the ones described in this document.

For more information, contact Stäubli at www.staubli.com/electrical.

Requirements for personnel
Only an electrician or electrically instructed person may assemble, install, and commission the system.

• An electrician is a person with appropriate professional training, knowledge, and experience to identify and avoid the dangers that may originate from electricity. An electrician is able to choose and use suitable personal protective equipment.
• An electrically instructed person is a person who is instructed or supervised by an electrician and can identify and avoid the dangers that may originate from electricity.

Prerequisites for installation and assembly

• NEVER use an obviously damaged product.
• ONLY tools and procedures approved by Stäubli shall be used.

Safe assembly and mounting

• Live parts can remain energized after isolation or disconnection
• ONLY Install the product when the photovoltaic array or -string is de-energized.

Mating and disconnecting

• ALWAYS de-energize the photovoltaic system before mating and disconnecting the connectors.
• NEVER disconnect the connectors under load.
• NEVER connect the male or female parts of the Stäubli connector with the connectors of other manufacturers.

Do NOT modify NOR repair component

• Mount the connector only once.
• Do NOT modify connectors after assembly.
• Replace defective connectors.

Tools required

• PV-MS-PLS/2, Order No. 32.6058
  or

• PV-MS-MC4-EVO, Order No. 32.6066

Note:
Operating instructions MA270, www.staubli.com/electrical.

Plugging and unplugging

Plugging

• Plug the parts of the connector together until they click in place. Check that they have engaged properly by pulling on the connector.

Attention
Assembly of not fully engaged connectors is not permitted as this could lead to a permanent deflection of clips and thus to a potential loss of the locking function. The correct assembly has to be verified at all times.

Unplugging

• To disconnect the plug connection,  unlock the locking clip with the tool  PV- MS-PLS/2 or PV-MS-MC4-Evo and pull the connector apart.

Options/Accessories

• Unplugged connectors must be protected from contamination with a sealing cap.
• For socket:
• PV-BVK4, order No. 32.0716 For plug:
• PV-SVK4, order No. 32.0717

Example of parallel connections with branch connectors

Attention

• When installing modules connected in parallel, make sure that the strings are connected correctly.

Attention

• When connecting the connectors, it must be ensured that the rated data (current carrying capacity and rated voltage) of the branch connectors are dependent on the connectors used in Tab. 1 or Tab. 2, page 5.
• Also, observe the assembly instructions of the connectors connected to the MC4-Evo 2 branch connector.

Product Specification in relation to certified mating correlation

The current and voltage ratings, as well as the upper limiting temperature, is limited to the corresponding mating connector from Stäubli. For detailed specifications refer to Tab. 1 and 2 below.

Tab. 1

| MC4| MC4-Evo 2
---|---|---
Typ Type| PV-KST4/xy-UR; PV-KST4/10y| PV-KST4-EVO 2/xy-UR; PV-KST4-EVO 2A/xy
PV-KBT4/xy-UR; PV-KBT4/10y| PV-KBT4-EVO 2/xy-UR; PV-KBT4-EVO 2A/xy
Rated Voltage IEC| DC 1000 V| DC 1500 V
Rated current IEC| 22 A (2.5 mm²)| 39 A (2.5 mm²)
39 A (4 mm²)| 45 A (4 mm²)
39 A (6 mm²)| 53 A (6 mm²)
45 A (10.0 mm²)| 60 A (10.0 mm²)
Upper limit temperature (ULT)| 105 °C| 115 °C

Tab. 2 UL

| MC4| MC4-Evo 2
---|---|---
 Type| PV-KST4/xy-UR| PV-KST4-EVO 2/-UR; PV-KST4-EVO 2A/
PV-KBT4/xy-UR| PV-KBT4-EVO 2/-UR; PV-KBT4-EVO 2A/
 Rated Voltage UL| DC 1500 V| DC 1500 V

Rated current UL

| 30 A (AWG14)| 30 A (AWG14)
35 A (AWG12)| 35 A (AWG12)
50 A (AWG10)| 50 A (AWG10)
50 A (AWG8)| 50 A (AWG8)

Max. operating temperature (MOT)

| 85 °C| 85 °C

The ampacity rating of these products is limited based on the smallest used wire diameter per the National Electrical Code (NEC) requirements for outdoor applications considering the correction factor.

  Notes on installation

Note
The MC4-Evo 2 branch connectors feature a hole in the middle of each component. This hole could be used to fix the connector using cable ties.

Note
If the connector is to be used in low-voltage DC applications other than those in a photovoltaic array, please consult the information provided in the Stäubli Technical Description Report. Link.

General notes on installation

• Unmated connectors must be protected from environmental impact (moisture, dirt, dust, etc.) with sealing caps (socket order no. 32.0716; plug order no. 32.0717).
• Do not mate contaminated connectors.
• Connectors must not come into contact with any chemicals.

Contaminated/damaged connectors

• Do not allow connectors to be contaminated by the environment (e.g. soil, water, insects, dust).
• Do not allow the connector to be contaminated on its surface (e.g. stickers, paint, heat shrink tubing).
• Do not allow the connector to be directly on the roofing surface.
• Do not allow the connector to be at the lowest point of the cabling where water can collect.
• Do not allow the connector to be in standing water.
• Do not allow that cable ties to be mounted directly on the connector body.

Mechanical stress

• Check that the connectors are not subjected to a permanent mechanical tensile load or vibration.
• Connectors shall not be under strain from cable management.
• Ensure that the locking clips are not subjected to excessive mechanical force.

Note for transportation and repacking
Ensure that the locking clips are not subjected to excessive mechanical force.

Technical Data

MC4-Evo 2 cable connectors
Max. operating altitude above sea level| 5000 m; AK 60159400
Temperature Level according to IEC TS 63126| Level 2; AK 60158914
CE| CE declaration of conformity**

1. The current and voltage ratings, as well as the upper limiting temperature, are limited to the corresponding mating connector from Stäubli. For detailed specifications refer to see Tab. 1, page 5.
2. The current and voltage ratings, as well as the upper limiting temperature, are limited to the corresponding mating connector from Stäubli. For detailed specifications refer to see Tab. 2, page 5. Engineering considerations: Application-associated current ratings have to be verified in the product’s end-use and shall not exceed the maximum operating temperature.
3. Rated voltage 1000 V and test voltage 6 kV with mated MC4 connector;  1500 V and test voltage 8 kV with mated MC4-Evo 2 connector.

Manufacturer

• Electrical Connectors AG
• Stockbrunnenrain 8
• 4123 Allschwil/Switzerland
• Tel. +41 61 306 55 55
• Fax +41 61 306 55 56
• mail ec.ch@staubli.com.  www.staubli.com/electrical.

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