3 Installation
3.3 Electrical Installation
50
DE1 variable speed starter
09/14 MN040011EN
www.eaton.com
3.3.7 Installations meeting UL
®
requirements
DE1 variable speed starters fully meet UL requirements, provided that the
following conditions are fully met:
•
In the case of DE1-12… devices, the single-phase supply voltage must
be connected to L1/L and L2/N. The maximum permissible rms voltage
must not exceed 240 Vrms.
•
In the case of DE1-34… devices, the three-phase supply voltage must
be connected to L1/L, L2/N, and L3. The phase sequence does not
matter. The maximum permissible rms voltage must not exceed
500 Vrms.
•
In order to meet CSA requirements, a TVSS is required on the DE1
device's mains side. This suppressor must monitor the 600 V (phase to
earth) and the 600 V (phase to phase), be suitable for overvoltage
category III, and provide protection against and be able to withstand a
rated surge voltage with 4 kV peaks or its equivalent.
•
The maximum permissible short-circuit current (AC) in the input power
supply must be 100 kArms if fuses are used (600 V, UL class CC or
class J). It must be 14 kArms if circuit-breakers are used (480 V, MCB
type B), as well as for DE1-34…. devices; 18 kArms if MCB type E
circuit-breakers are used.
•
There must be a fixed installation with a suitable disconnecting device
between the DE1 device and the supply voltage as required by local
safety codes and standards.
•
Suitable copper wire mains and motor cables with a minimum insulation
temperature rating of 75 °C (167 °F) must be used.
•
The tightening torques for the power terminals, as defined in the
specification for the individual models, must be used.
•
Only one single conductor type is permissible for each power terminal.
The PE conductor must be connected to metal enclosures using a ring
cable lug.
•
Motor overload protection options:
•
Overload relay, placed between the DE1 variable speed starter and
the motor, that switches off the DE1 device in case of overload OR
•
Motor with thermistor that uses a thermistor overload relay (EMT6)
to switch off the DE1 variable speed starter in case of overload OR
•
Motor with thermistor that switches off the DE1 variable speed
starter directly with an external fault message (thermistor
connected to control terminal 3 and +10 V), EXTFLT with mode 1
(P-15 = 1), mode 3 (P-15 = 3), mode 5 (P-15 = 5), mode 7 (P-15 = 7),
and mode 9 (P-15 = 9). Prerequisite: P-19 = 0, OR
•
Motor thermal memory (P-33 = 0).
Prerequisite: P-08 = Set to rated motor current.
￫
Instruction leaflet IL040005ZU includes a summary titled
"Additional Information for UL® Approved Installations."
