10kv Numeric Multifunction Substation Power System Protection Device

10kv Numeric Multifunction Substation Power System Protection Device
AM4 series protection relay is applicable to the user substation which the input voltage is 35kv and below. We adopt mature technology solutions to ensure the quality of the AM relay. The AM relay is widely used in substations, subsection posts and ring main units for office buildings, commercial buildings, communication buildings, mine buildings, and so on.

 

Product Parameters

 

Rated Parameter	Power Supply	Power supply: AC/DC220V, or AC/DC110V, or DC48V(Reference the wiring diagram)
		Range: Power supply x (1±20%)
		Maximum power consumption:≤10W(DC)
	Rated Voltage	Rated Voltage: AC100V
		Range:1-120V
		Accuracy:±0.5%
		Power Consumption:≤0.5VA(Single phase)
		Overload capacity:1.2 times rated voltage for continuous work;2 times for 10 seconds
	Rated Current	Rated current: AC 5A/1A(See the device wiring diagram)
		Range:0.04In~15In
		Power consumption:≤0.5VA(Single phase)
		Over capacity:2 times rated current for continuous work;40 times for 1 second
	Frequency	Rated frequency:50Hz or 60 Hz
		Range:45~55Hz
		Accuracy:±0.1Hz
	Digital Input	Rated Voltage: AC/DC220V, AC/DC110V, DC48V(Similar to the power supply)
		Voltage Range: Rated voltage x (1±20%)
		Power Consumption:≤1W(DC220V)(Single channel)
	Digital Output	Mechanical life:≥10000 times
		Switching capacity:≥1000W, L/R=40ms
		On current:continuous≥5A short time(200ms)≥30A
		Interrupting capacity:≥30W,L/R=40ms
Normal Working Conditions	Ambient temperature:-10ºC~+55ºC
	Device storage, transport allows the ambient temperature is -25ºC~+70ºC
	Relative humidity:5%~95%(The product does
	Altitude:≤4000m

Function	Current Type	Voltage Type
	AM4-I	AM4-U1
Current collection	4	0
Voltage collection	4	4
Switch value collection	12	12
Relay output	5	5
Protection Function
Overcurrent (three stages, inverse time limit)	√
Zero sequence overcurrent (two stages, inverse time limit)	√
Negative sequence overcurrent (two stages, inverse time limit)	√
Reclosing	√
Overload trip/alarm	√
Low-frequency load shedding	√
After accelerating overcurrent	√
Overvoltage trip	√
Low voltage trip	√
FC blocking	√
Control failure alarm	√
Non-electricity trip/alarm	√
Low voltage alarm	√	√
Overvoltage alarm	√	√
Zero sequence overvoltage alarm (self-produced/external)	√	√
PT disconnection alarm	√	√
Self-produced zero-sequence overvoltage alarm		√
Communication protocol
Modbus-RTU	√	√
IEC60870-5-103	√	√
Auxiliary function
Fault recording	√

Dimension

Display

Wiring

Networking

 

Q: How to set the CT and PT ratio of the protection device?

A: The protection device can set the CT and PT ratio through the fixed value menu. For example, the current transformer is 75/5 and the voltage transformer is 10/0.1, then the CT ratio is set to 15 and the PT ratio is set to 100.


Q: For AM5, if you want to place single circuit protection and transformer protection, how to distinguish the model?

A: AM5-F is suitable for line protection and transformer protection.No need to distinguish between models when placing orders


Q: When the voltage is a three-phase three-wire system, does the current have to be connected with 2CT?

A: The voltage wiring mode and current wiring mode of the protection device can be set independently, and can be connected freely.


Q: How to confirm whether the anti-trip function is configured?

A: If the circuit breaker is equipped with anti-trip, the device does not must be equipped with anti-trip; if the circuit
breaker does not have anti-trip, you need to configure the AM5-FT anti-trip module. (If DC48V is selected as the
operating power supply, the anti-trip box is not optional, and the circuit breaker must be equipped with anti-trip
function; if you choose AC anti-trip, please note that AC and DC general anti-tripping)


Q: How to purchase suitable protection devices?

A: Before ordering, it is recommended to consult related engineers, select the appropriate protection model,
and then fill in the corresponding selection table, and place the order after confirmation by the engineers.