Technical parameters Supply circuit Supply terminals: Supply voltage: Consumption: Supply voltage tolerance: Measuring circuit Load: Current range:
Inrush overload <1ms: Current adjustment: Time delay: Accuracy Setting accuracy (mechanical): Repeat accuracy: Temperature dependancy: Limit values tolerance: Hysteresis (fault to OK): Output Number of contacts: Rated current: Breaking capacity: Output indication: Other information Operating temperature: Storage temperature: Electrical strength: Operating position: Mounting: Protection degree: Overvoltage cathegory: Pollution degree: Max. cable size (mm2): Dimensions: Weight: Standards:
to monitor heating rods in shunts, heating cables, to indicate current flow, to monitor consumption of one-phase engines
!
fluent adjusting actualing current via potentiometer, choice of 5 ranges: AC 0.1-1 A, AC 0.2-2 A, AC 0.5-5 A, AC 0.8-8 A, AC 1.6-16 A
!
adjustable delay 0.5 - 10 s to eliminate short current peaks
!
possible to use for current scanning from current transformer - up to 600 A!
!
universal supply AC 24 - 240 V and DC 24 V
!
supply is not galvanically separated from measured current, it must be in the same phase
!
output contact: 1x changeover 8 A
!
1-phase, 1-MODULE, DIN rail mounting, replacement for PRI-31
Connection
Symbol
PRI-51
Example Connection: PRI-51 with current transformer for current range increase
A1 - A2 AC 24 - 240 V a DC 24 V (AC 50 - 60 Hz) max. 1.5 VA -15 %; +10 %
A1
A2
16
L N
18
Un Un
PRI-51/2 PRI-51/5 PRI-51/8 PRI-51/16 AC 0.2-2A AC 0.5-5A AC 0.8-8A AC 1.6-16A
B1
B2
15
applicable also for current transformer more information page 99 1A
2A
5A
8A
Ip
LOAD
between B1 - B2 PRI-51/1 AC 0.1-1A
Recomended current transformers: Max. permanent current:
!
Is
A1
A2
A1
A2
B1
B2
B1
B2
You can find information about current transformers see page 99
16
16
current transformer
16 A
100 A potentiometer adjustable 0.5-10 s
15
18
15
18
Function
5% <1 % < 0.1 % / 0C 5% 5%
Hysteresis
1x changeover (AgNi) 8 A / AC1 2500 VA / AC1, 240 W / DC green / red LED
Description
A1
-20.. +55 0C -30.. +70 0C 4 kV (supply - output) any DIN rail EN 60715 IP 40 from front panel III. 2 solid wire max. 2x2.5 or 1x4,with sleeve max. 1x2.5 or 2x1.5 90 x 17.6 x 64 mm, see page 157-159 58 g EN 60255-6, EN 61010-1
Supply terminals Measuring input (only AC)
A2 B1
B2
Output Indication Adjusting current in % In Adjusting time pause
16
Fukction description Monitoring relay PRI-51 serves to monitor current level in one-phase AC circuits. Gradual setting of actuating current of monitoring relay enables many different applications. Output relay is in normal state open. After the set current level is reached, relay closes after the set delay (0.510s). When returning from faulty to normal state there is a hystersis (5%). Multi-voltage of this relay is an advantage. It is possible to monitor load which doesn´t have the same supply as monitoring relay PRI-51. Range of PRI-51 can be increased by an external current transformer.
15
18
Output contact
Example of an order Always specify all reference name of current relay according to required range, for example PRI-51/5.
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Page 1 of 14. 3-phase supply control relays model RM4 T. Monitor 3-phase supplies, to protect motors and other loads. against the faults. - Rotational direction of phases (all types). - Failure of one or more phases (all types). - Undervoltage (RM4 T
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