Grundfos CRNE 1 HS, Инструкция по установке и эксплуатации

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1. Installation in the USA and Canada
In order to maintain the UL/cUL approval, these additional instal-
lation procedures must be followed. The UL approval is according
to UL508C.
1.1 Electrical installation
1.1.1 Conductors
Use 140/167
°
F (60/75
°
C) copper conductors only.
1.1.2 Torques
Power terminal, M4: 2.35 Nm.
Relay, M2.5: 0.5 Nm.
Input control, M2: 0.2 Nm.
1.1.3 Line reactors
Max. line reactor size, 2 unit %.
1.1.4 Fuse size/circuit breaker
The pump is “suitable for use on a circuit capable of delivering not
more than 5000 A RMS symmetrical amperes, 480 V maximum”
• when protected by fuses rated (see tables below) and 480 V,
and/or
• “when protected by a circuit breaker having an interrupting rat-
ing not less than (see table below) RMS symmetrical amperes,
480 V maximum”.
USA - hp
Europe - kW
1.1.5 Overload protection
Degree of overload protection provided internally by the drive, in
percent of full-load current: 102 %.
1.2 Before starting the pump
• The pump must always be connected to the power supply at
least one hour prior to start.
• From then on the pump must always be connected to the
power supply.
This procedure will help to avoid condensation in the terminal
box.
2-pole Fuse size Circuit breaker type/model
6.2 40 A 40 A / Inverse time
8.0 40 A 40 A / Inverse time
10 50 A 50 A / Inverse time
2-pole Fuse size Circuit breaker type/model
4.6 40 A 40 A / Inverse time
6.0 40 A 40 A / Inverse time
7.5 50 A 50 A / Inverse time
Subject to alterations.