EWS 1 Assembly exercises on switching units

These assembly exercises focus on mechanical skills. All exercises are of an extremely practical nature. All parts, except for consumables (wires) can be reused.

The following exercises are performed in this course:

Familiarization with equipment and various wiring techniques such as flat wiring, channel wiring and chamber wiring.
Configuration and commissioning of circuits incorporating these technologies.
Contactor control with circuit-breaker
Contactor control with inching mode
Contactor control with self-holding
Contactor control with two operating locations
Reversing circuit with contactors
Forced sequential connections with main current circuit
Interlocking of a contactor control
Contactor controls with a timing relay
Contactor circuits for motors with 2 speeds and 2 separate windings
Dahlander circuit with contactors
Star-delta circuit with contactors
Starter circuit for a slip-ring motor

Equipment set comprising the following:
1	Installation materials, EWS 1	SE2670-2N
1	Terminal strip set X1	SE2670-2P
1	Terminal strip set X2	SE2670-2Q
1	Set of NEOZED fuses	SE2670-2S
1	Cable duct (channel) wiring support unit	SE2670-2U
1	Set of fixing materials, cables	SE2670-1G
1	Set of wiring materials, EWS 1 (for 8 students)	SE2670-2R

Media:
1		Manual EWS01 Assembly Practice on Switchgear Circuits (GB)		SH5001-3M

Power supply:
1		Mains connection box, 3x400V, three-phase		SE2501-1G

Measuring instruments:
1		Voltage, phase + continuity tester with field direction indicator, max. 690V		LM8554
1		TRMS digital multimeter MetraHit 2+, CAT III		LM2323

Accessories:
3		Storage tray for SE boxes, reinforced, (10 boxes) 310 x 45 x 700 mm	ST7004-2B
2		Storage tray for installation materials, reinforced base 310 x 700 x 35 mm	ST7004-2J
1		Set of fixing materials, punched hole frame	SE2669-3A
1		Set of fixing materials, punched hole frame (100pcs)	SE2669-3C
1		Set of tools ”Electric ”	SE2670-4B
5		Safety measurement cable 4mm, 100 cm, black, 600 V CAT III ~ 1000 V, CAT II / 32 A	SO5126-8V
1		Safety measurement cable 4mm, 100cm/40″, blue, 600V CAT III ~1000V CAT II / 32A	SO5126-9A
1		Safety measurement cable 4mm, 100cm/40″, gr/ye, 600V CAT III ~1000V CAT II / 32A	SO5126-9C
1		Mobile aluminum experiment stand, 3 levels, power strip with 6 sockets,(1250 x 1970 x 700 mm)	ST7200-4C
1		Punched hole panel, interchangeable, for 1200 mm panel mounting frames	ST8003-5Q
	Alternative mounting solution:
1		Punched hole wiring installation cabin kit, 3 sides + roof, inside 1,26 m x 2,03 m x 1,26 m	ST8003-6C
1		Ergo45° 3 HU power duct, 580 mm, for twin wiring installation cabin, horizontal 114 PU	ST8033-3U
1		Full-width front plate (type 1) for six-sided power supply duct 114PU	ST8070-4C