PG Drives Technology S200A - Wire Gauge and Types Recommendations; Battery Connection and Protection; Motor Connection Requirements

PG DRIVES TECHNOLOGY S-DRIVE - INSTALLATION
SK76745/10
31
3.4 Wire Gauge and Types
The table below gives the minimum recommended wire sizes as defined in ISO7176: 2008.
Controller
Current Limit (A)
Battery wire size (mm
2
)
Motor Wiring size (mm
2
)
For Length
<1000mm
For length
1000mm - 1500mm
For Length
<1000mm
For length
1000mm - 1500mm
30
2.5
3.0
2.5
2.5
40
3.0
4.0
2.5
3.0
50
4.0
4.0
3.0
4.0
60
6.0
6.0
3.0
4.0
80
6.0
8.0
4.0
5.0
100
6.0
No guidance
6.0
6.0
150
8.0
No guidance
8.0
8.0
These are recommendations only and the scooter manufacturer must conduct their own tests to confirm the suitability of the
selected wiring.
The wire gauges of the Tiller Interface 24V and 0V connections, Pins 7 and 13, may require
increasing if the scooter manufacturer wishes to run auxiliary circuits, such as lighting, from
these pins.
It is the responsibility of the scooter manufacturer to ensure that all wire gauges are suitable for
the intended application.
Battery, motor and charger wires should use Tri-rated PVC equipment wire rated at 105°C.
3.5 Battery Connection
The controller incorporates sophisticated current limiting circuitry as protection for the circuits in the controller.
ISO 7176-14 requires you to provide protection against short circuits in the battery wiring and the power loom or the extremely
unlikely event of a short circuit in the controller.
Place a suitable circuit breaker in series with the battery supply, for example in the link between two 12V batteries. If your batteries
are held in separate enclosures, you must provide a circuit breaker with each of them.
The rating of the circuit breaker must match the capacity of the wiring specified in section 3.4. It is recommended that the
battery positive and negative wiring to the S-Drive is kept as short as possible.
ISO 7176-14 states that the minimum operating time for the circuit breaker when the scooter is stalled is 15 seconds.
The scooter manufacturer must install a suitable circuit breaker to provide protection against
short circuits in the battery wiring, power loom or the controller. Failure to comply with this could
result in a fire hazard. PGDT accepts no liability for losses of any kind arising from failure to
comply with this condition.
3.6 Motor Connection
If a circuit breaker is fitted in series with the motor, it is essential that the scooter assumes a safe condition the moment the circuit
breaker operates. You must therefore fit a circuit breaker with an auxiliary switch which inhibits the scooter from driving.