INDRA Smart PRO User manual

INDRA Smart PRO
Installation Guide

Contents
General Description
Overview and Intended use environment
Protective Earth, Simultaneous Touch (PESTs) Protection
General Installation Notes
Installation Procedure
Commissioning the Unit - Smart Charging Control
Load Curtailment and Calibration
Technical Specifications and Ratings
Certification:
Safety Markings and Labels
Troubleshooting
Servicing and Maintenance
Support and Contact Information
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Models:
190105A101 Type 1 Tethered
190105A102 Type 2 Tethered
190105A103 Type 2 Socketed
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General Description
This manual describes the method of installation and hardware operation of
the ‘Smart PRO’, where the Smart PRO is a permanently installed electric vehicle
charging solution for resistive domestic and commercial loads of at least 6A
and up to 32A at 230V, 50Hz.
Smart PRO has 3 build variants:
• Smart PRO Type 1 (190105A101) has a SAE J1772 (Type 1) tethered charging
connector to be used with Type 1 socket fitted EVs
• Smart PRO Type 2 (190105A102) has an IEC 62196 (Type 2) tethered
charging connector to be used with Type 2 socket fitted EVs
• Smart PRO Type 2 Socket (190105A103) can be used with multiple types
of charging cables, provided at least one end of the cable is fitted with an
IEC 62196 male connector
Overview and Intended use environment
The Smart PRO can be classified as a ‘smart’ electric vehicle charging solution because
of its communications infrastructure which allows charging to be remotely optimised
by the ‘Kaluza’ smart grid platform; where charging can take place when electricity is
cheapest; or if immediate charging is required, its ‘Boost’ functionality overrides any
smart grid criteria and provides instantaneous charging capability.
Charging using the Smart PRO can take place at up to 7kW, but due to
modulation capability (measured by the external CT clamp) this power
output level can also be reduced.
The Smart PRO is intended for both indoor and outdoor installation, securely
mounted to any retaining wall.
In its operating environment, the temperature must be between -20 and 50°C,
with humidity between 10% to 85% non-condensing. Supply voltage should be
230V AC at 50Hz, rated up to 32Amps, to allow for maximum charging capability.

Protective Earth, Simultaneous Touch (PESTs) Protection
The Smart PRO’s PEST solution can operate under four of the indents of BS
7671:2018+A1:2020 Amendment 1; section 722.411.4.1, for the purposes
of design/installation we have two modes of operation which INDRA call A & B.
Mode A can be configured with or without a reference electrode.
The safest installation configuration is always mode A with reference electrode
• Mode A with reference electrode – Indent iii – PME (Protective Multiple Earthing)
as CPC with a TT reference electrode and the only method for imbalanced 3 phase
installations (3 phase installations that do not meet the requirements of indent i)
• Mode A without reference electrode – For installations that do not fall under the
requirements of 722.411.4, TT installations, indoor installations, balanced 3 phase
installations (indent i), installations where PME is bonded to Earth in accordance
with indent ii and installations where protection is provided by a third party
device (e.g. matt:e).
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• Mode B - PME as CPC with trip on L-N voltage measurement. No reference
electrode. For installations where an Earth Rod is not possible and/or there are
no simultaneous contact or touch voltage risks present. Consideration should
be given to nuisance trips where the line to neutral voltage may regularly exceed
253v, especially where local renewables are present, Mode A is less sensitive
to nuisance tripping.
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BS7671. 18th Ed Am1
PEN Fault
Ref Earth Electrode
Phase Imbalance
(1) L – N Trip
(2) L – TT Ref Trip
(3) PME – TT Ref Trip
Dedicated CPC
Earth Electrode
Relay Weld detection
DC 6mA Protection
Protection for installs
with three independent
earthing systems (rare)
INDRA’s unique PEST safety features
3 phase
property capable
Touch Voltage
Simultaneous Contact
722.411.4.1 (iii)
Full protection
Full protection
230 +/- 12% RMS
230 +/- 12% RMS
30v RMS
Required – COPv4
Not required
Full protection
Full protection
Manual management
of risk
Yes
Full protection
Full protection
Limited protection
Not required
Limited protection
230 +/- 12% RMS
Faults not detected
Faults not detected
Not required
Full protection
Full protection
Manual management
of risk
Yes
Manual management
of risk
Manual management
of risk
722.411.4.1 (iv)
Limited protection
Install Method /
Operation Mode
Mode A with
Electrode
Mode A without
Electrode
Mode B
PESTs Mode A essentially works by comparing three voltage readings:
1. L - N
2. L - TT Ref
3. CPC (PME) – TT Ref
722.411.4.1 (i)
722.411.4.1 (ii)
any install not under
section 722.411.4
Not required
Limited protection
230 +/- 10% RMS
Faults not detected
Faults not detected
Not required
Full protection
Full protection
Manual management
of risk
No
Manual management
of risk
Manual management
of risk

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The below scenarios show these two mode cases in the event of a fault arising on
the combined Protective Earth and neutral (PEN) conductor, leading to a potentially
dangerous voltage arising on the installation earth conductor, and any conductive
surfaces connected to the (protective) earth. In this case, the user touching the EV
(and outside tap or lamp post etc) completes the circuit back to source earth.
INDRA PESTS mode A
INDRA PESTS mode B

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The main earthing terminal of the installation
is connected to an installation earth electrode by
a protective conductor complying with Regulation
544.1.1. The resistance of the earth electrode to Earth
shall be such that the maximum voltage between the
main earthing terminal of the installation and Earth in
the events of an open-circuit fault in the PEN conductor
of the low voltage network supplying the installation
does not exceed 70 V rms
Protection against electric shock in a single-phase installation
is provided by a device which electrically disconnects the
vehicle from the live conductors of the supply and from
protective earth in accordance with Regulation 543.3.3.101 (ii)
within 5 s in the event of the utilisation voltage at the charge
point, between the line and neutral conductors, being greater
than 253 V rms or less that 207 V rms. The device shall
provide isolation and be selected in accordance with Table
537.4 Equivalent means of functionality could be included
within the charging equipment. Closing or resetting of the
device shall be possible only if the voltage between line and
neutral conductors is in the range 207 to 253 V rms.
Protection against electric shock is provided b a device which
electrically disconnects the vehicle from the live conductors
of the supply and from protective earth in accordance with
Regulations 543.3.3.101(ii) within 5 s in the event of the
voltage between the circuit protective conductor and earth
exceeding 70 V rms due to an open-circuit fault in the PEN
conductor of the low voltage network. The device shall provide
isolation and be selected in accordance with Table 537.4.
Closing or resetting of the device shall be possible only if the
voltage between the circuit protective conductor and Earth
does not exceed 70 V rms. Equivalent means of functionality
could be included within the charging equipment.

General Installation Notes
Pre-Installation Checks and Warnings
WARNING: FAILURE TO COMPLY WITH THESE INSTRUCTIONS
COULD PRESENT A HAZARD
A) Read these instructions fully before installing or using the Smart PRO
and keep these instructions for future reference
B) The Smart PRO is designed for permanent installation and is suitable for operation
on an AC electricity supply having the same voltage and current rating as shown
on the product label.
C) The Smart PRO should be installed in accordance with extant wiring regulations;
providing protection with either an upstream Type A RCD or RCBO with 40A
overcurrent protection.
D) The Smart PRO MUST not be fitted alongside an upstream protection device which
claims to meet ident (iv) of BS 7671:2018+A1:2020 Amendment 1; section
722.411.4.1. Voltage upstream PEN Fault protection and curtailment devices such
as solutions from Matt:e and Garo have been proven to regularly nuisance trip and
may damage any Smart PRO device through frequent removal of the grid supply
under load.
E) A qualified professional electrician must be used for all installation and servicing
of the Smart PRO. Any servicing or tampering by a non-qualified professional
electrician will void the warranty.
F) The supply to the Smart PRO MUST be isolated before installation.
G) The Smart PRO MUST be connected to CPC reference
H) The installation location MUST be structurally sound and MUST NOT be subject
to excessive dust, vibration, lint or other material build-up which could affect
the Smart PRO’s proper operation.
WARNING: Protection against electric shock shall not be automatically reset.
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