ChargePoint Express 250 Manual
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ChargePoint Express 250 Manual

Dc fast charging station
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Express 250
DC Fast Charging Station
Site Design Guide
for Standalone and Paired Stations

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Summary of Contents for ChargePoint Express 250

  • Page 1 Express 250 DC Fast Charging Station Site Design Guide for Standalone and Paired Stations...
  • Page 2 Charging Station. Install and operate only as instructed. Failure to do so may lead to death, injury, or property damage, and will void the Limited Warranty. 2. Only use licensed professionals to install your ChargePoint charging station and adhere to all national and local building codes and standards. Before installing the ChargePoint® charging...
  • Page 3 Copyright and Trademarks ©2013-2019 ChargePoint, Inc. All rights reserved. This material is protected by the copyright laws of the United States and other countries. It may not be modified, reproduced or distributed without the prior, express written consent of ChargePoint, Inc. CHARGEPOINT is a U.S. and European Union registered trademark and service mark of ChargePoint, Inc.

  • Page 5: Table Of Contents

    Cellular Connectivity ........26 4 The Express 250 Concrete Mounting Template ....27...
  • Page 6 Install the CPE250-CMT........32 Appendix A Examples of Express 250 Paired Wire Sizing ..33...

  • Page 7: Site Design Guidelines

    Site Design Guidelines This document describes how to design an installation site for the ChargePoint® Express 250 DC fast charging station, and install the Concrete Mounting Template, before station installation. The Express 250 is a DC fast charging station for electric vehicles. Each charging station communicates with ChargePoint using a cellular network.

  • Page 8: Pairing Two Express 250S

    Pairing Two Express 250s The Express 250 can be installed either as a standalone system, or paired with another Express 250 using a DC connection to more flexibly share load. The two Power Modules in the base of each charging station can be shared in any combination according to charging need.

  • Page 9: Charging Station Placement

    WARNING: Asphalt cannot support the full weight of the charging station. Failure to install the ChargePoint charging station on a level concrete base may cause the charging station to tip over, resulting in death, personal injury, or property damage. Layout considerations: •...
  • Page 10 • Note that the Express 250’s two charge cables are different types of connectors to maximize usability across EV models. The cables cannot both be used at the same time. Therefore, do not position an Express 250 to share two parking spots.
  • Page 11 Distance from left space marking: 3048 mm (120 in) maximum Distance from right space marking: 4876.8 mm (192 in) Distance from curb: 457.2 mm (18 in) Cable reach radius: 3.76 m (148 in) Example EV length: 4978.4 mm (196 in) Recommended parking space length: 7924.8 mm (312 in) Recommended parking space width: 2743.2 mm (108 in)

  • Page 13: Civil And Mechanical Design

    Civil and Mechanical Design Use the guidance below to design the civil and mechanical aspects of the site. Component Dimensions and Weights The Express 250 is a vertical enclosure with ~ 1118 mm (44 in) the dimensions shown here. 712 mm (28 in)

  • Page 14: Pad

    If the existing pad does not meet the specifications above, it must be inspected and approved by a structural engineer for the Express 250’s dimensions and weight. If needed, give these structural design specifications to the structural engineer for verification:...

  • Page 15: Drainage

    Exposing the ChargePoint® charging station to over 18 inches (457 mm) of WARNING: standing water could create an electrocution, shock, or fire hazard. Cut power to the charging station if it has been exposed to standing water and contact ChargePoint before the charging station is powered on. Mounting Specifications The Express 250 is installed on a concrete pad.

  • Page 16: Clearances

    Clearances The Express 250 requires minimum functional and service clearances as listed in the table below. Front Clearance 330.2 mm (13 in) at grade; 609.6mm (24 in) minimum open space Side Clearance* 711.2 mm (28 in) required; 863.6 mm (34 in) recommended** Rear Clearance 304.8 mm (12 in) required;...

  • Page 17: Ventilation

    If a charging station will have a wall directly behind it, minimum rear clearance is 305 mm (12 in). • If two Express 250 charging stations will be positioned back to back, increase the rear clearance to a shared 610 mm (24 in) for both stations to reduce exhaust recirculation. Wheel Stops Bollards and wheel stops are not explicitly required by ChargePoint.

  • Page 18: Bollards

    Cable reach radius: 3.76 m (148 in) Recommended distance for walk-up access: 609 mm (24 in) Recommended distance between wheel stop and Express 250: 1371 mm (54 in) for passenger vehicles Shorter wheel stops that are installed in the center of a parking spot can fit CAUTION: between the wheels of a larger vehicle and not prevent forward motion.
  • Page 19 • Where permitted by code, wheel stops are preferred over bollards for head-in or back-in spaces. • When bollards are required by code, needed for snowy areas, or needed for curbside spaces, ensure bollard placement does not interfere with removing and replacing charge cables in the station’s side holsters.

  • Page 20: Pairing Previously Installed Charging Stations

    Install the cover panels and extrusions on the Express 250 stations over the stub-ups as normal. By only connecting AC wiring (and shunt trip if applicable), each Express 250 can perform as a Standalone station until the station owner is ready to pair them. At a later time, the stations can be paired by installing DC conductors, connecting Ethernet communication, and performing a firmware update if required.

  • Page 21: Accessibility

    Accessibility The Express 250 touchscreen and charging cables are accessible at a height of less than 1219 mm (48 in) from the ground. This complies with American Disability Act (ADA) requirements, if the station is installed at grade.

  • Page 23: Electrical Design

    Electrical Design The default Express 250 installation requires service wiring to be installed underground. (If a site requires surface mounting, contact ChargePoint before beginning work, to obtain an approved surface installation method.) Conduit and wire size are determined based on the length of runs from the electrical panel to the station location.

  • Page 24: Transformer Configuration

    Interrupt) is related to the station’s upstream breaker. The Express 250 charging station is tested to IEC 61000-4-5, Level 5 CAUTION: (6 kV @ 3000 A) standards. In geographic areas that experience frequent thunderstorms, supplemental surge protection must be installed at the service panel to guard against product damage.

  • Page 25: Grounding/Earthing Requirements

    RCD for a permanently installed mode 4 isolated output DC charger. RCD Settings For Standalone Express 250 installations where the use of an RCD (RCCB or RCBO) cannot be avoided, use the following settings to minimize nuisance trips: •...

  • Page 26: Shunt Trip Wiring

    Drivers can unintentionally trip the emergency shutoff, causing inconvenience and downtime to site hosts. However, wiring to enable a remote shunt trip is standard on each Express 250. This shunt trip wiring is activated when unsafe conditions are detected, such as a missing cover panel or a severe impact.

  • Page 27: Conduit

    In regions that do not use conduit, armored cable may be laid in the same configuration to conform to the wire placement as shown in the section, “The Express 250 Concrete Mounting Template (page 27)”. Ensure a length of at least 61 cm (2 ft) is left free above grade at each end to allow the wiring to reach the charging station AC terminals.

  • Page 28: Wiring Requirements For Standalone Stations

    For full product specifications, refer to the Express 250 Data Sheet. Using that data, ensure that the installation location is equipped with service wiring that supports the Express 250’s power requirements: •...
  • Page 29 Example UK/EU lugs for average conductor size are Weidmuller 1494410000 120 mm similar (always review the lug manufacturer’s instructions for crimper tool and die compatibility) • Contact ChargePoint if the installer requires lugs for 3/0 (kit 99-002644) or 4/0 (kit 99- 002645) conductors...
  • Page 30 When DC conductors are pulled through conduit, label each end of each DC conductor to aid installation as follows: • “Station 1 A+” on one end and “Station 2 B1+” on the other end • “Station 1 A-” on one end and “Station 2 B1-” on the other end •...

  • Page 31: Wiring Diagram

    Wiring Diagram...

  • Page 32: Cellular Connectivity

    Do not use microcells or femtocells, as they are inadequate for this use case. Note: In the US, the Express 250 supports AT&T 4G/LTE. There must be viable AT&T signal on one or more of the supported bands listed below. For other regions, contact your ChargePoint representative for more detail on carrier support.

  • Page 33: The Express 250 Concrete Mounting Template

    The Express 250 Concrete Mounting Template The Express 250 is a DC fast charging station for electric vehicles. The default Express 250 installation requires service wiring to be installed underground and run to a concrete pad. (If a site requires surface mounting, contact ChargePoint before beginning work, to obtain an approved surface installation method.) The ChargePoint Express 250 Concrete Mounting Template (CPE250-...

  • Page 34: Bring Tools And Materials

    Bring Tools and Materials In addition to the CPE250-CMT kit, the site construction team needs: • Digging tools (shovel, spade, etc.) • Materials to prepare the form for pouring concrete • Concrete as specified by site drawings • Rebar as specified by site drawings •...

  • Page 35: Cpe250-Cmt Overview

    CPE250-CMT Overview The Express 250 is a DC fast charging station for electric vehicles. It converts three-phase power from its associated building (callout a in the image below) to DC power to charge the vehicle. A ground conductor also runs in conduit a. Shunt trip wiring (b, optional) is run from the station to the breaker panel to automatically shut down the station if a fault or hazard is detected, such as a damaged cover panel or impact from a vehicle.
  • Page 36 AC conduit from the left side of each station to the breaker panel (possibly with an AC disconnect switch in the circuit): 50.8 mm (2 in trade size) Shunt trip conduit from the left side of each station to the breaker panel: 19.1 mm (3/4 in trade size) Anchor bolts (x4) Paired installations only: Ethernet conduit between the two stations to be paired, right side...

  • Page 37: Assemble The Cpe250-Cmt

    Assemble the CPE250-CMT The CPE250-CMT can have sharp edges. Wear cut-resistant gloves. CAUTION: Although the CPE250-CMT was originally designed for six anchor bolts, only the Important: four corner anchor bolts are required for station stability. Newer charging stations are designed to only use the four corner anchor bolts. Before pouring concrete, assemble the CPE250-CMT with its anchor bolts, washers, and nuts.

  • Page 38: Install The Cpe250-Cmt

    Pour the concrete. Make sure the concrete surface between the conduits is completely level and free of any Note: irregularities. Complete the Construction Signoff Form provided by ChargePoint to verify that the site is correctly completed and ready for product installation.

  • Page 39: Appendix A Examples Of Express 250 Paired Wire Sizing

    Examples of Express 250 Paired Wire Sizing The required DC wire gauge varies based on the specific site. Use these example scenarios to help you determine the correct wire gauge for your site. These scenarios are only examples, and are not intended to replace an Important: assessment by a local electrician.
  • Page 40 A 3/0 copper conductor has an ampacity of 200 A at 75°C, which is the ampacity column required for equipment rated 100 A or greater per NEC 110.14(C)(1)(b). If, following the derating from the 90°C column, the resultant ampacity of the 3/0, 90°C wire is equal to or greater than the ampacity rating of the same size conductor in the 75°C, the conductor is permitted.
  • Page 41 Examples of Express 250 Paired Wire Sizing 100.05 A, which is greater than the minimum required 100 A. Thus the permitted conductor size is 3 AWG. The permission to use the 90°C ampacity for ambient temperature comes from the general requirement in 110.14(C);...
  • Page 43 The Limited Warranty you received with your Charging Station is subject to certain exceptions and exclusions. For example, your use of, installation of, or modification to, the ChargePoint® Charging Station in a manner in which the ChargePoint® Charging Station is not intended to be used or modified will void the limited warranty. You should review your limited warranty and become familiar with the terms thereof.
  • Page 44 75-001387-01 r1...

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