Single-phase supply unit 726 71 Single-phase ... - LD DIDACTIC

Scientific
Education
Technical Training
and Education Trade LEYBOLD DIDACTIC GMBH
Instruction sheet
Ha 9/97
Single-phase supply unit 726 71
Single-phase supply unit with FCCB 726 72
Read the instruction sheet carefully before putting the device into operation!
Prescribed use
This training panel is part of the modular TPS training panel system and permits the single-phase
power supply of installation circuits. Furthermore, this training panel is equipped with an automatic
cut-out 10 A for the protection of lines in installation circuits.
In the case of 726 72 there is an additional residual-current-operated circuit breaker (R.C.C.B)
30 mA for protection against leakage and creepage currents.
Location of use
• Operation in dry rooms which serve for experimenting with electrical operating equipment or
installations.
• Operation exclusively in panel frame
1. Safety instructions
This device is designed according to protection class I and corresponds to the safety directives
as set forth in EN 61010.
Safe operation is guaranteed when the device is used as stipulated. However, safety is not ensured
if the device is operated improperly or handled without care.
• The output voltage is contact-hazardous!
• Establish the protective earth conductor/PE connection to the experiment setup.
• Test the function of the control lamps before operation.
• Test the function of the residual-current-operated circuit-breaker before operation. (only 726
72)
• Always make sure that the reverse-polarity control lamp does not light up.
• Only use safety connecting leads/bridging plugs.
• Only perform modifications to the experiment setup when the device is switched off.
• Never feed separate voltage sources to the sockets.
• If you assume that safe operation is no longer possible (e.g. in the case of visible damage),
then the device must be switched off immediately and secured to prevent it from being accidentally
put back into operation.
1
0
PE
1
726 71

Automatic
circuit-breaker
RCCB circuit-breaker
(only 726 72)
Reverse-polarity control
lamp
2. Description
1Mains switch
5
2
0
PE
4
1
726 71
2Residual-current-operated circuit-breaker 30 mA, (only 726 72)
3Automatic circuit-breaker 10 A
4Phase control lamp L1,
to monitor the voltage at the connection socket L1
5Reverse-polarity control lamp,
lights up when the mains plug is connected with the wrong polarity
6Connection socket L1
7Connection socket N
8PE connection socket
3. Operation
If the automatic circuit-breaker is tripped out during overload of the experiment setup:
• Disconnect experiment setup from the mains by switching the mains switch to [OFF]
• Correct fault source
• Reset the automatic circuit-breaker by setting the switch to [I]
Test the function of the RCCB:
• Set mains switch to [ON]
• Press the pushbutton [T] on the RCCB circuit-breaker
• If the RCCB circuit-breaker is tripped, operation is guaranteed.
If the RCCB circuit-breaker is tripped by a fault current in the experiment setup
• Disconnect the experiment setup from the mains by switching the mains switch to [OFF]
• Correct fault source
• Reset the RCCB circuit-breaker by setting the switch to [I]
If the reverse-polarity control lamp lights up:
• Pull out the mains plug
• Replug the mains plug with the correct polarity (rotate)
6
7
3
1
8

4. Technical data
Mains switch: Cam switch, two-pole
Connection: Connection line with earthing-pin connector
Input voltage: 230 V AC, 50...60 Hz
Fuses: Automatic circuit-breaker FAZ C 10 A
726 72: RCCB circuit-breaker 30 mA
Output: 4-mm safety sockets
3