There are only two basic electrical systems: Single-phase and Three-phase. Single phase power has two legs and Three-phase has three legs. (Refer to diagram; Common electrical systems).
Basic types of protection for electrical equipment come in many different forms. The MV Series is one form designed to eliminate voltage impulses from the electrical system. Technically known as a transient voltage suppressor, voltage surge protection device (VSPD), surge protection device (SPD) or widely known prior to 1998 as a transient voltage surge suppressor (TVSS).
When to install a different unit than what is called for in the wiring diagram. EXAMPLE: If an electrical system is 208 but the majority of the load is phase to phase, such as motors, the MV-200P should be installed instead of a MV-200. The same is true of the MV-400P and MV-400 respectively. Transients are either caused phase to phase or phase to neutral, depending on the type of equipment running in the system. Thus, the VSPD needed for the best results should match the equipment.
What kind of equipment causes transient voltage? Basically anything that uses electricity, although some types are worse than others. Large motors (50 HP and up), heating elements, compressors and variable speed drives top the list as the worst.
Voltage impulses, more commonly known as surges and spikes, in the electrical world are defined as over voltage, higher than 170 % above nominal voltage, lasting less than 2 seconds. The MV Series has a response time of less than a billionth of a second. This eliminates any chance of damage occurring due to transient voltage.
Transients can occur transversely. The MV Series is designed to work either way. Most protection devices rely on ground, which can restrict performance as well as creating considerable dangers. It is also a violation of the National Electrical Code. Refer to details in the IEEE Paper No. PCIC-99-31.
COMMON ELECTRICAL SYSTEMS
Illustrates Proper "MV-Series" Model to Install:
Types of AC Utilization Systems
600 Volts or Less
SURVEY TIPS
Fig. 1
Figure 1 shows a single-phase service with meter. Typical of a small business or a residence.
Fig. 2
Figure 2 shows a three-phase panel and a single-phase panel that are tied together. All that is needed is a three-phase unit on the three-phase panel.
Fig. 3
Figure 3 shows a three-phase main disconnect with two panels. This disconnect feeds both panels. Only one unit is needed. It can be mounted on either panel if the main is not practical.
Fig. 4
Figure 4 shows two panels mounted next to each other but are not connected. One MV Series is needed on each panel. This applies if the main they are feeding off of is more than 12 feet away.
Fig. 5
Figure 5 is a series of disconnects and motor starters feeding off of one main and junction in a gutter. All that is needed is one MV-400P unit. If the main feeds more equipment than this, one will be needed on the main. Typical of cotton gins.
Fig. 6
Figure 6 is a 480-volt main panel and a transformer that feeds a single-phase panel. One MV 400 is needed on the main. The transformer will have a rating plate; this plate will typically indicate the high voltage rating (primary) and the low voltage (secondary). In this example, 120/240 secondary voltages, which is typical of commercial. Therefore, an MV-100 would be needed on the single-phase panel.
Fig. 7
In Figure 7 the key thing to remember is the distance from the main. If the line is more than 12 feet and feeds more than one electrical device an MV Series is needed.
HOW TO DO A SURVEY
Start at the meter!
Find the main breaker or main panel. One unit should always be installed at the main. At this time check voltage to find proper unit. When the power is above 240 volts and there are standard outlets in or around the building, you must find the transformer. Check the voltage rating of the transformer and select an appropriate MV- Series.
Panels or Equipment Downstream from the Main
Branch panels need a unit if they are running more than one piece of equipment, lights, outlets, etc. . . (Note: Some panels do not look like panels. Equipment with multi motor systems may have a breaker panel in it and a unit would be needed.)
Things to Check While Doing a Survey
When looking at a panel, feel the face of the breakers. If any are excessively warm have this checked before a MV-Series is installed. Obviously, there is a problem that should be repaired. If possible, with an amp meter, check to see if the load is balanced. This can be done by clamping around each main line (under normal operation). To have a balanced load each leg should be within approximately 15% of each other. Exception, a 120/240 Delta with a high leg doesn't need to have the high leg within that range.
INSTALLATION INSTRUCTIONS
Model MV 100 Single Phase Unit
For single phase, 3 wire, 120/240-volt systems
Typical use: Home or Small Business.
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read Notes.
2.Remove ½" knockout from panel box.
3.Insert wires through knockout and tighten by turning lock nut, not the nipple.
4.Run wires as short and as straight as possible to optimize performance and to reduce impedance. Connecting to buss is optimal, however connections to breakers are adequate.
5.Connect white wire to Neutral buss bar, not ground.
6.Connect each remaining black wire to each buss bar. (120 volt)
7.Remove fuses (lights should glow brightly). Then replace.
Notes:
Do not connect any two voltage suppressor wires to same buss bar. The voltage suppressor may be damaged and warranty voided by improper connection.
Breaker must be disconnected during installation.
Safety First---Always use voltage meter "First"! Know your voltage.
INSTALLATION INSTRUCTIONS
Model MV 200N Three Phase Unit
For 3 phase, 4 wire Delta, 120/240-volt systems
Typical use: Rural areas, older system or high leg systems
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read Notes.
2.Remove ½" knockout from panel box.
3.Insert wires through knockout and tighten by turning lock nut, not the nipple.
4.Run wires as short and as straight as possible to optimize performance and to reduce impedance. Connecting to buss is optimal, however connections to breakers are adequate.
5.Connect white wire to Neutral buss bar, not ground.
6.Connect black wire to either 120-volt buss bar.
7.Connect remaining black wire to other 120-volt buss bar.
8.Connect red wire to Hi-Leg buss bar. (180-240 volt).
9.Remove fuses (lights should glow brightly). Then replace.
Notes:
Do not connect any two voltage suppressor wires to same buss bar. The voltage suppressor may be damaged and warranty voided by improper connection.
Breaker must be disconnected during installation.
Safety First---Always use voltage meter "First"! Know your voltage.
INSTALLATION INSTRUCTIONS
Model MV 200P Three Phase Unit
For 3 phase, 3 wire Delta 240 volt systems
Typical use: Motors
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read Notes.
2.Remove ½" knockout from panel box.
3.Insert wires through knockout and tighten by turning lock nut, not the nipple.
4.Run wires as short and as straight as possible to optimize performance and to reduceimpedance.Connecting to buss is optimal, however connections to breakers are adequate.
5.Connect red wires, one to each phase, A, B and C.
6.Remove fuses (lights should glow brightly). Then replace.
Notes:
Do not connect any two voltage suppressor wires to same buss bar. The voltage suppressor may be damaged and warranty voided by improper connection.
Breaker must be disconnected during installation.
Safety First---Always use voltage meter "First"! Know your voltage.
INSTALLATION INSTRUCTIONS
Model MV 200 Three Phase Unit
For 3 phase, 4 wire WYE, 120/208 volt systems
Typical use: Small commercial or secondary industrial
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read Notes.
2.Remove ½" knockout from panel box.
3.Insert wires through knockout and tighten by turning lock nut, not the nipple.
4.Run wires as short and as straight as possible to optimize performance and toreduceimpedance.Connecting to buss is optimal, however connections to breakers are adequate.
5.Connect white wire to Neutral buss bar, not ground.
6.Connect black wires to each phase, A, B and C.
7.Remove fuses (lights should glow brightly). Then replace.
Notes:
A. Do not connect any two voltage suppressor wires to same buss
bar. The voltage suppressor may be damaged and warranty
voided by improper connection.
B. Breaker must be disconnected during installation.
Safety First---Always use voltage meter "First"! Know your voltage.
INSTALLATION INSTRUCTIONS
Model MV 400 Three Phase Unit
For 3 Phase, 4 Wire WYE 277/480 volt system
Typical use: Lighting or main distribution where neutral is not dead-ended.
MUST BE INSTALLED BY LICENSED ELECTRICAN
1.Read Notes.
2.Remove ½" knockout from panel box.
3.Insert wires through knockout and tighten by turning lock nut, not the nipple.
4.Run wires as short and as straight as possible to optimize performance and to reduceimpedance.Connecting to buss is optimal, however connections to breakers are adequate.
5.Connect white wire to Neutral buss bar, not ground.
6.Connect each remaining black wire to each buss bar. (277V)
7.Remove fuses (lights should glow brightly). Then replace.
Notes:
A. Do not connect any two voltage suppressor wires to same buss bar. The voltage suppressor may be damaged and warranty voided by improper connection.
B. Breaker must be disconnected during installation.
Safety First---Always use voltage meter "First"! Know your voltage.
INSTALLATION INSTRUCTIONS
Model MV 400P Three Phase Unit
For 3 phase, 3 Wire Delta 480 volt systems
Typical uses: Motors and motor control centers.
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read Notes.
2.Remove ½" knockout from panel box.
3.Insert wires through knockout and tighten by turning lock nut, not the nipple.
4.Run wires as short and as straight as possible to optimize performance and to reduceimpedance.Connecting to buss is optimal, however connections to breakers are adequate.
5.Connect each red wire to each buss bar. (480V)
6.Remove fuses (lights should glow brightly). Then replace.
Notes:
A. Do not connect any two voltage suppressor wires to same buss bar. The voltage suppressor may be damaged and warranty voided by improper connection.
B. Breaker must be disconnected during installation.
Safety First---Always use voltage meter "First"! Know your voltage.
INSTALLATION INSTRUCTIONS
ICP-SERIES-ICP-110
For single phase, 110 volt system
Typical use: Control voltage, PLC's, logic controls, phone boards and individual circuits.
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read notes.
2.Install the 8-pin socket as close as possible to the power source.
3.Connect pin 7 to phase.
4.Connect pin 2 to neutral.
5.Connect pin 1 to alarm source if desired.
Note:
Breaker must be disconnected during installation. Safety first-Always use voltage meter "First"! Know your voltage.
Pin 1 becomes active with 110 volts upon operation of the ICP unit.
INSTALLATION INSTRUCTIONS
ICP-SERIES-ICP-110-S (When this unit operates the load will lose power)
For single phase, 110 volt system
Typical use: Control voltage, PLC's, logic controls, phone boards and individual circuits.
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read notes.
2.Install the 8-pin socket as close as possible to the power source.
3.Connect pin 7 to phase.
4.Connect pin 2 to neutral.
5.Connect pin 6 to the load. Maximum load is 500 watts.
6.Connect pin 1 to alarm source if desired.
Note:
Breaker must be disconnected during installation. Safety first-Always use voltage meter "First"! Know your voltage.
Pin 1 becomes active with 110 volts upon operation of the ICP unit.
INSTALLATION INSTRUCTIONS
ICP-SERIES-ICP-40DC
For 12-40 volt DC
Typical use: Control voltage, PLC's, logic controls, phone boards and individual circuits.
MUST BE INSTALLED BY LICENSED ELECTRICIAN
1.Read notes.
2.Install the 8-pin socket as close as possible to the power source.
3.Connect pin 7 to positive.
4.Connect pin 2 to negative.
5.Connect pin 1 to alarm source if desired.
Note:
Breaker must be disconnected during installation. Safety first-Always use voltage meter "First"! Know your voltage.
Pin 1 becomes active with DC source voltage upon operation of the ICP unit.
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