MODEL: MAKN
MAKN SPECIFICATIONS
ES-8142 Rev.1 Page 3/6
CONNECTION EXAMPLES
*
1
*
3
E
D
E
B
*
4
1) : Protective device of the switchgear
2) : Switchgear
3) : Main earth terminal or busbar
4) : MAKF
4)a : MAKN
5) : Earth conductor
5)a and/or 5)b
6) : Protected device
F : Circuit breaker
E
B :
Mains earth electrode
E
D :
Switchgear's earth electrode
1)
2)
3)
6)
4)
4)
4)
4)
4)
4)
4)a
5)a
5)b
F
N
*
2
L2
L1
L3
PE
N
Residual
Current
Circuit
Breaker
*
1. The circuit breaker must be installed. Molded-case circuit breaker (MCCB) or residual current circuit breaker with overcurrent protection (RCD) can be used.
The rated interrupting capacity of the circuit breaker must be greater than the highest amount of current that could be available in the circuit.
Install MCCB (rated current 20 – 30A) that has element for each phase. Or RCD with protection from nuisance tripping against transit voltages type or time-delay
overcurrent protection type is recommended.
Recommended sensitivity current rating: 30mA
*
2. Cable length between the branch point and the earthing: 0.5 meters or less recommended
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3. The protected device's metal enclosure must be cross-wired to the earth terminal of the MAKN. If the protected device has no earth terminal, earth only the MAKN.
*
4. In order to protect an electronic circuit such as measuring equipment or communication equipment, we recommend to use surge protectors which have serial
impedance incorporated such as M-System's models MAX, MMA or MAH.
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INSTALLATION EXAMPLES
When power supply side (N) and equipment side (PE) are earthed independently (TT system), installs this unit between N and PE. Install one-port
surge protector for power supply (model: MAKF) between L to L and L to N. The installation procedure of the three-phase/4-wire system is shown
below as an example.
